MagickCore  6.9.13-7
Convert, Edit, Or Compose Bitmap Images
draw.c
1 /*
2 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3 % %
4 % %
5 % %
6 % DDDD RRRR AAA W W %
7 % D D R R A A W W %
8 % D D RRRR AAAAA W W W %
9 % D D R RN A A WW WW %
10 % DDDD R R A A W W %
11 % %
12 % %
13 % MagickCore Image Drawing Methods %
14 % %
15 % %
16 % Software Design %
17 % Cristy %
18 % July 1998 %
19 % %
20 % %
21 % Copyright 1999 ImageMagick Studio LLC, a non-profit organization %
22 % dedicated to making software imaging solutions freely available. %
23 % %
24 % You may not use this file except in compliance with the License. You may %
25 % obtain a copy of the License at %
26 % %
27 % https://imagemagick.org/script/license.php %
28 % %
29 % Unless required by applicable law or agreed to in writing, software %
30 % distributed under the License is distributed on an "AS IS" BASIS, %
31 % WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. %
32 % See the License for the specific language governing permissions and %
33 % limitations under the License. %
34 % %
35 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
36 %
37 % Bill Radcliffe of Corbis (www.corbis.com) contributed the polygon
38 % rendering code based on Paul Heckbert's "Concave Polygon Scan Conversion",
39 % Graphics Gems, 1990. Leonard Rosenthal and David Harr of Appligent
40 % (www.appligent.com) contributed the dash pattern, linecap stroking
41 % algorithm, and minor rendering improvements.
42 %
43 */
44 ␌
45 /*
46  Include declarations.
47 */
48 #include "magick/studio.h"
49 #include "magick/annotate.h"
50 #include "magick/artifact.h"
51 #include "magick/blob.h"
52 #include "magick/cache.h"
53 #include "magick/cache-private.h"
54 #include "magick/cache-view.h"
55 #include "magick/channel.h"
56 #include "magick/color.h"
57 #include "magick/color-private.h"
58 #include "magick/colorspace.h"
59 #include "magick/colorspace-private.h"
60 #include "magick/composite.h"
61 #include "magick/composite-private.h"
62 #include "magick/constitute.h"
63 #include "magick/draw.h"
64 #include "magick/draw-private.h"
65 #include "magick/enhance.h"
66 #include "magick/exception.h"
67 #include "magick/exception-private.h"
68 #include "magick/gem.h"
69 #include "magick/geometry.h"
70 #include "magick/image-private.h"
71 #include "magick/list.h"
72 #include "magick/log.h"
73 #include "magick/magick.h"
74 #include "magick/memory-private.h"
75 #include "magick/monitor.h"
76 #include "magick/monitor-private.h"
77 #include "magick/option.h"
78 #include "magick/paint.h"
79 #include "magick/pixel-accessor.h"
80 #include "magick/pixel-private.h"
81 #include "magick/property.h"
82 #include "magick/resample.h"
83 #include "magick/resample-private.h"
84 #include "magick/resource_.h"
85 #include "magick/splay-tree.h"
86 #include "magick/string_.h"
87 #include "magick/string-private.h"
88 #include "magick/thread-private.h"
89 #include "magick/token.h"
90 #include "magick/transform.h"
91 #include "magick/utility.h"
92 ␌
93 /*
94  Define declarations.
95 */
96 #define AntialiasThreshold (1.0/3.0)
97 #define BezierQuantum 200
98 #define PrimitiveExtentPad 4296.0
99 #define MaxBezierCoordinates 67108864
100 #define ThrowPointExpectedException(image,token) \
101 { \
102  (void) ThrowMagickException(&(image)->exception,GetMagickModule(),DrawError, \
103  "NonconformingDrawingPrimitiveDefinition","`%s'",token); \
104  status=MagickFalse; \
105  break; \
106 }
107 ␌
108 /*
109  Typedef declarations.
110 */
111 typedef struct _EdgeInfo
112 {
114  bounds;
115 
116  double
117  scanline;
118 
119  PointInfo
120  *points;
121 
122  size_t
123  number_points;
124 
125  ssize_t
126  direction;
127 
128  MagickBooleanType
129  ghostline;
130 
131  size_t
132  highwater;
133 } EdgeInfo;
134 
135 typedef struct _ElementInfo
136 {
137  double
138  cx,
139  cy,
140  major,
141  minor,
142  angle;
143 } ElementInfo;
144 
145 typedef struct _MVGInfo
146 {
148  **primitive_info;
149 
150  size_t
151  *extent;
152 
153  ssize_t
154  offset;
155 
156  PointInfo
157  point;
158 
160  *exception;
161 } MVGInfo;
162 
163 typedef struct _PolygonInfo
164 {
165  EdgeInfo
166  *edges;
167 
168  size_t
169  number_edges;
170 } PolygonInfo;
171 
172 typedef enum
173 {
174  MoveToCode,
175  OpenCode,
176  GhostlineCode,
177  LineToCode,
178  EndCode
179 } PathInfoCode;
180 
181 typedef struct _PathInfo
182 {
183  PointInfo
184  point;
185 
186  PathInfoCode
187  code;
188 } PathInfo;
189 ␌
190 /*
191  Forward declarations.
192 */
193 static Image
194  *DrawClippingMask(Image *,const DrawInfo *,const char *,const char *,
195  ExceptionInfo *);
196 
197 static MagickBooleanType
198  DrawStrokePolygon(Image *,const DrawInfo *,const PrimitiveInfo *),
199  RenderMVGContent(Image *,const DrawInfo *,const size_t),
200  TraceArc(MVGInfo *,const PointInfo,const PointInfo,const PointInfo),
201  TraceArcPath(MVGInfo *,const PointInfo,const PointInfo,const PointInfo,
202  const double,const MagickBooleanType,const MagickBooleanType),
203  TraceBezier(MVGInfo *,const size_t),
204  TraceCircle(MVGInfo *,const PointInfo,const PointInfo),
205  TraceEllipse(MVGInfo *,const PointInfo,const PointInfo,const PointInfo),
206  TraceLine(PrimitiveInfo *,const PointInfo,const PointInfo),
207  TraceRectangle(PrimitiveInfo *,const PointInfo,const PointInfo),
208  TraceRoundRectangle(MVGInfo *,const PointInfo,const PointInfo,PointInfo),
209  TraceSquareLinecap(PrimitiveInfo *,const size_t,const double);
210 
211 static PrimitiveInfo
212  *TraceStrokePolygon(const DrawInfo *,const PrimitiveInfo *,ExceptionInfo *);
213 
214 static ssize_t
215  TracePath(Image *,MVGInfo *,const char *);
216 ␌
217 /*
218 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
219 % %
220 % %
221 % %
222 % A c q u i r e D r a w I n f o %
223 % %
224 % %
225 % %
226 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
227 %
228 % AcquireDrawInfo() returns a DrawInfo structure properly initialized.
229 %
230 % The format of the AcquireDrawInfo method is:
231 %
232 % DrawInfo *AcquireDrawInfo(void)
233 %
234 */
235 MagickExport DrawInfo *AcquireDrawInfo(void)
236 {
237  DrawInfo
238  *draw_info;
239 
240  draw_info=(DrawInfo *) AcquireCriticalMemory(sizeof(*draw_info));
241  GetDrawInfo((ImageInfo *) NULL,draw_info);
242  return(draw_info);
243 }
244 ␌
245 /*
246 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
247 % %
248 % %
249 % %
250 % C l o n e D r a w I n f o %
251 % %
252 % %
253 % %
254 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
255 %
256 % CloneDrawInfo() makes a copy of the given draw_info structure. If NULL
257 % is specified, a new DrawInfo structure is created initialized to default
258 % values.
259 %
260 % The format of the CloneDrawInfo method is:
261 %
262 % DrawInfo *CloneDrawInfo(const ImageInfo *image_info,
263 % const DrawInfo *draw_info)
264 %
265 % A description of each parameter follows:
266 %
267 % o image_info: the image info.
268 %
269 % o draw_info: the draw info.
270 %
271 */
272 MagickExport DrawInfo *CloneDrawInfo(const ImageInfo *image_info,
273  const DrawInfo *draw_info)
274 {
275  DrawInfo
276  *clone_info;
277 
278  clone_info=(DrawInfo *) AcquireCriticalMemory(sizeof(*clone_info));
279  GetDrawInfo(image_info,clone_info);
280  if (draw_info == (DrawInfo *) NULL)
281  return(clone_info);
282  if (draw_info->id != (char *) NULL)
283  (void) CloneString(&clone_info->id,draw_info->id);
284  if (draw_info->primitive != (char *) NULL)
285  (void) CloneString(&clone_info->primitive,draw_info->primitive);
286  if (draw_info->geometry != (char *) NULL)
287  (void) CloneString(&clone_info->geometry,draw_info->geometry);
288  clone_info->compliance=draw_info->compliance;
289  clone_info->viewbox=draw_info->viewbox;
290  clone_info->affine=draw_info->affine;
291  clone_info->gravity=draw_info->gravity;
292  clone_info->fill=draw_info->fill;
293  clone_info->stroke=draw_info->stroke;
294  clone_info->stroke_width=draw_info->stroke_width;
295  if (draw_info->fill_pattern != (Image *) NULL)
296  clone_info->fill_pattern=CloneImage(draw_info->fill_pattern,0,0,MagickTrue,
297  &draw_info->fill_pattern->exception);
298  else
299  if (draw_info->tile != (Image *) NULL)
300  clone_info->fill_pattern=CloneImage(draw_info->tile,0,0,MagickTrue,
301  &draw_info->tile->exception);
302  clone_info->tile=NewImageList(); /* tile is deprecated */
303  if (draw_info->stroke_pattern != (Image *) NULL)
304  clone_info->stroke_pattern=CloneImage(draw_info->stroke_pattern,0,0,
305  MagickTrue,&draw_info->stroke_pattern->exception);
306  clone_info->stroke_antialias=draw_info->stroke_antialias;
307  clone_info->text_antialias=draw_info->text_antialias;
308  clone_info->fill_rule=draw_info->fill_rule;
309  clone_info->linecap=draw_info->linecap;
310  clone_info->linejoin=draw_info->linejoin;
311  clone_info->miterlimit=draw_info->miterlimit;
312  clone_info->dash_offset=draw_info->dash_offset;
313  clone_info->decorate=draw_info->decorate;
314  clone_info->compose=draw_info->compose;
315  if (draw_info->text != (char *) NULL)
316  (void) CloneString(&clone_info->text,draw_info->text);
317  if (draw_info->font != (char *) NULL)
318  (void) CloneString(&clone_info->font,draw_info->font);
319  if (draw_info->metrics != (char *) NULL)
320  (void) CloneString(&clone_info->metrics,draw_info->metrics);
321  if (draw_info->family != (char *) NULL)
322  (void) CloneString(&clone_info->family,draw_info->family);
323  clone_info->style=draw_info->style;
324  clone_info->stretch=draw_info->stretch;
325  clone_info->weight=draw_info->weight;
326  if (draw_info->encoding != (char *) NULL)
327  (void) CloneString(&clone_info->encoding,draw_info->encoding);
328  clone_info->pointsize=draw_info->pointsize;
329  clone_info->kerning=draw_info->kerning;
330  clone_info->interline_spacing=draw_info->interline_spacing;
331  clone_info->interword_spacing=draw_info->interword_spacing;
332  clone_info->direction=draw_info->direction;
333  if (draw_info->density != (char *) NULL)
334  (void) CloneString(&clone_info->density,draw_info->density);
335  clone_info->align=draw_info->align;
336  clone_info->undercolor=draw_info->undercolor;
337  clone_info->border_color=draw_info->border_color;
338  if (draw_info->server_name != (char *) NULL)
339  (void) CloneString(&clone_info->server_name,draw_info->server_name);
340  if (draw_info->dash_pattern != (double *) NULL)
341  {
342  ssize_t
343  x;
344 
345  for (x=0; fabs(draw_info->dash_pattern[x]) >= MagickEpsilon; x++) ;
346  clone_info->dash_pattern=(double *) AcquireQuantumMemory((size_t) (2*x+2),
347  sizeof(*clone_info->dash_pattern));
348  if (clone_info->dash_pattern == (double *) NULL)
349  ThrowFatalException(ResourceLimitFatalError,
350  "UnableToAllocateDashPattern");
351  (void) memset(clone_info->dash_pattern,0,(size_t) (2*x+2)*
352  sizeof(*clone_info->dash_pattern));
353  (void) memcpy(clone_info->dash_pattern,draw_info->dash_pattern,(size_t)
354  (x+1)*sizeof(*clone_info->dash_pattern));
355  }
356  clone_info->gradient=draw_info->gradient;
357  if (draw_info->gradient.stops != (StopInfo *) NULL)
358  {
359  size_t
360  number_stops;
361 
362  number_stops=clone_info->gradient.number_stops;
363  clone_info->gradient.stops=(StopInfo *) AcquireQuantumMemory((size_t)
364  number_stops,sizeof(*clone_info->gradient.stops));
365  if (clone_info->gradient.stops == (StopInfo *) NULL)
366  ThrowFatalException(ResourceLimitFatalError,
367  "UnableToAllocateDashPattern");
368  (void) memcpy(clone_info->gradient.stops,draw_info->gradient.stops,
369  (size_t) number_stops*sizeof(*clone_info->gradient.stops));
370  }
371  clone_info->bounds=draw_info->bounds;
372  clone_info->fill_opacity=draw_info->fill_opacity;
373  clone_info->stroke_opacity=draw_info->stroke_opacity;
374  clone_info->element_reference=draw_info->element_reference;
375  clone_info->clip_path=draw_info->clip_path;
376  clone_info->clip_units=draw_info->clip_units;
377  if (draw_info->clip_mask != (char *) NULL)
378  (void) CloneString(&clone_info->clip_mask,draw_info->clip_mask);
379  if (draw_info->clipping_mask != (Image *) NULL)
380  clone_info->clipping_mask=CloneImage(draw_info->clipping_mask,0,0,
381  MagickTrue,&draw_info->clipping_mask->exception);
382  if (draw_info->composite_mask != (Image *) NULL)
383  clone_info->composite_mask=CloneImage(draw_info->composite_mask,0,0,
384  MagickTrue,&draw_info->composite_mask->exception);
385  clone_info->render=draw_info->render;
386  clone_info->debug=draw_info->debug;
387  return(clone_info);
388 }
389 ␌
390 /*
391 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
392 % %
393 % %
394 % %
395 + C o n v e r t P a t h T o P o l y g o n %
396 % %
397 % %
398 % %
399 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
400 %
401 % ConvertPathToPolygon() converts a path to the more efficient sorted
402 % rendering form.
403 %
404 % The format of the ConvertPathToPolygon method is:
405 %
406 % PolygonInfo *ConvertPathToPolygon(const PathInfo *path_info,
407 % ExceptionInfo *exception)
408 %
409 % A description of each parameter follows:
410 %
411 % o ConvertPathToPolygon() returns the path in a more efficient sorted
412 % rendering form of type PolygonInfo.
413 %
414 % o draw_info: Specifies a pointer to an DrawInfo structure.
415 %
416 % o path_info: Specifies a pointer to an PathInfo structure.
417 %
418 % o exception: return any errors or warnings in this structure.
419 %
420 */
421 
422 static PolygonInfo *DestroyPolygonInfo(PolygonInfo *polygon_info)
423 {
424  ssize_t
425  i;
426 
427  if (polygon_info->edges != (EdgeInfo *) NULL)
428  {
429  for (i=0; i < (ssize_t) polygon_info->number_edges; i++)
430  if (polygon_info->edges[i].points != (PointInfo *) NULL)
431  polygon_info->edges[i].points=(PointInfo *)
432  RelinquishMagickMemory(polygon_info->edges[i].points);
433  polygon_info->edges=(EdgeInfo *) RelinquishMagickMemory(
434  polygon_info->edges);
435  }
436  return((PolygonInfo *) RelinquishMagickMemory(polygon_info));
437 }
438 
439 #if defined(__cplusplus) || defined(c_plusplus)
440 extern "C" {
441 #endif
442 
443 static int DrawCompareEdges(const void *p_edge,const void *q_edge)
444 {
445 #define DrawCompareEdge(p,q) \
446 { \
447  if (((p)-(q)) < 0.0) \
448  return(-1); \
449  if (((p)-(q)) > 0.0) \
450  return(1); \
451 }
452 
453  const PointInfo
454  *p,
455  *q;
456 
457  /*
458  Edge sorting for right-handed coordinate system.
459  */
460  p=((const EdgeInfo *) p_edge)->points;
461  q=((const EdgeInfo *) q_edge)->points;
462  DrawCompareEdge(p[0].y,q[0].y);
463  DrawCompareEdge(p[0].x,q[0].x);
464  DrawCompareEdge((p[1].x-p[0].x)*(q[1].y-q[0].y),(p[1].y-p[0].y)*
465  (q[1].x-q[0].x));
466  DrawCompareEdge(p[1].y,q[1].y);
467  DrawCompareEdge(p[1].x,q[1].x);
468  return(0);
469 }
470 
471 #if defined(__cplusplus) || defined(c_plusplus)
472 }
473 #endif
474 
475 static void LogPolygonInfo(const PolygonInfo *polygon_info)
476 {
477  EdgeInfo
478  *p;
479 
480  ssize_t
481  i,
482  j;
483 
484  (void) LogMagickEvent(DrawEvent,GetMagickModule()," begin active-edge");
485  p=polygon_info->edges;
486  for (i=0; i < (ssize_t) polygon_info->number_edges; i++)
487  {
488  (void) LogMagickEvent(DrawEvent,GetMagickModule()," edge %.20g:",
489  (double) i);
490  (void) LogMagickEvent(DrawEvent,GetMagickModule()," direction: %s",
491  p->direction != MagickFalse ? "down" : "up");
492  (void) LogMagickEvent(DrawEvent,GetMagickModule()," ghostline: %s",
493  p->ghostline != MagickFalse ? "transparent" : "opaque");
494  (void) LogMagickEvent(DrawEvent,GetMagickModule(),
495  " bounds: %g,%g - %g,%g",p->bounds.x1,p->bounds.y1,
496  p->bounds.x2,p->bounds.y2);
497  for (j=0; j < (ssize_t) p->number_points; j++)
498  (void) LogMagickEvent(DrawEvent,GetMagickModule()," %g,%g",
499  p->points[j].x,p->points[j].y);
500  p++;
501  }
502  (void) LogMagickEvent(DrawEvent,GetMagickModule()," end active-edge");
503 }
504 
505 static void ReversePoints(PointInfo *points,const size_t number_points)
506 {
507  PointInfo
508  point;
509 
510  ssize_t
511  i;
512 
513  for (i=0; i < (ssize_t) (number_points >> 1); i++)
514  {
515  point=points[i];
516  points[i]=points[number_points-(i+1)];
517  points[number_points-(i+1)]=point;
518  }
519 }
520 
521 static PolygonInfo *ConvertPathToPolygon(const PathInfo *path_info,
522  ExceptionInfo *exception)
523 {
524  long
525  direction,
526  next_direction;
527 
528  PointInfo
529  point,
530  *points;
531 
533  *polygon_info;
534 
536  bounds;
537 
538  ssize_t
539  i,
540  n;
541 
542  MagickBooleanType
543  ghostline;
544 
545  size_t
546  edge,
547  number_edges,
548  number_points;
549 
550  /*
551  Convert a path to the more efficient sorted rendering form.
552  */
553  polygon_info=(PolygonInfo *) AcquireMagickMemory(sizeof(*polygon_info));
554  if (polygon_info == (PolygonInfo *) NULL)
555  {
556  (void) ThrowMagickException(exception,GetMagickModule(),
557  ResourceLimitError,"MemoryAllocationFailed","`%s'","");
558  return((PolygonInfo *) NULL);
559  }
560  number_edges=16;
561  polygon_info->edges=(EdgeInfo *) AcquireQuantumMemory(number_edges,
562  sizeof(*polygon_info->edges));
563  if (polygon_info->edges == (EdgeInfo *) NULL)
564  {
565  (void) ThrowMagickException(exception,GetMagickModule(),
566  ResourceLimitError,"MemoryAllocationFailed","`%s'","");
567  return(DestroyPolygonInfo(polygon_info));
568  }
569  (void) memset(polygon_info->edges,0,number_edges*
570  sizeof(*polygon_info->edges));
571  direction=0;
572  edge=0;
573  ghostline=MagickFalse;
574  n=0;
575  number_points=0;
576  points=(PointInfo *) NULL;
577  (void) memset(&point,0,sizeof(point));
578  (void) memset(&bounds,0,sizeof(bounds));
579  polygon_info->edges[edge].number_points=(size_t) n;
580  polygon_info->edges[edge].scanline=0.0;
581  polygon_info->edges[edge].highwater=0;
582  polygon_info->edges[edge].ghostline=ghostline;
583  polygon_info->edges[edge].direction=(ssize_t) direction;
584  polygon_info->edges[edge].points=points;
585  polygon_info->edges[edge].bounds=bounds;
586  polygon_info->number_edges=0;
587  for (i=0; path_info[i].code != EndCode; i++)
588  {
589  if ((path_info[i].code == MoveToCode) || (path_info[i].code == OpenCode) ||
590  (path_info[i].code == GhostlineCode))
591  {
592  /*
593  Move to.
594  */
595  if ((points != (PointInfo *) NULL) && (n >= 2))
596  {
597  if (edge == number_edges)
598  {
599  number_edges<<=1;
600  polygon_info->edges=(EdgeInfo *) ResizeQuantumMemory(
601  polygon_info->edges,(size_t) number_edges,
602  sizeof(*polygon_info->edges));
603  if (polygon_info->edges == (EdgeInfo *) NULL)
604  {
605  (void) ThrowMagickException(exception,GetMagickModule(),
606  ResourceLimitError,"MemoryAllocationFailed","`%s'","");
607  points=(PointInfo *) RelinquishMagickMemory(points);
608  return(DestroyPolygonInfo(polygon_info));
609  }
610  }
611  polygon_info->edges[edge].number_points=(size_t) n;
612  polygon_info->edges[edge].scanline=(-1.0);
613  polygon_info->edges[edge].highwater=0;
614  polygon_info->edges[edge].ghostline=ghostline;
615  polygon_info->edges[edge].direction=(ssize_t) (direction > 0);
616  if (direction < 0)
617  ReversePoints(points,(size_t) n);
618  polygon_info->edges[edge].points=points;
619  polygon_info->edges[edge].bounds=bounds;
620  polygon_info->edges[edge].bounds.y1=points[0].y;
621  polygon_info->edges[edge].bounds.y2=points[n-1].y;
622  points=(PointInfo *) NULL;
623  ghostline=MagickFalse;
624  edge++;
625  polygon_info->number_edges=edge;
626  }
627  if (points == (PointInfo *) NULL)
628  {
629  number_points=16;
630  points=(PointInfo *) AcquireQuantumMemory((size_t) number_points,
631  sizeof(*points));
632  if (points == (PointInfo *) NULL)
633  {
634  (void) ThrowMagickException(exception,GetMagickModule(),
635  ResourceLimitError,"MemoryAllocationFailed","`%s'","");
636  return(DestroyPolygonInfo(polygon_info));
637  }
638  }
639  ghostline=path_info[i].code == GhostlineCode ? MagickTrue : MagickFalse;
640  point=path_info[i].point;
641  points[0]=point;
642  bounds.x1=point.x;
643  bounds.x2=point.x;
644  direction=0;
645  n=1;
646  continue;
647  }
648  /*
649  Line to.
650  */
651  next_direction=((path_info[i].point.y > point.y) ||
652  ((fabs(path_info[i].point.y-point.y) < MagickEpsilon) &&
653  (path_info[i].point.x > point.x))) ? 1 : -1;
654  if ((points != (PointInfo *) NULL) && (direction != 0) &&
655  (direction != next_direction))
656  {
657  /*
658  New edge.
659  */
660  point=points[n-1];
661  if (edge == number_edges)
662  {
663  number_edges<<=1;
664  polygon_info->edges=(EdgeInfo *) ResizeQuantumMemory(
665  polygon_info->edges,(size_t) number_edges,
666  sizeof(*polygon_info->edges));
667  if (polygon_info->edges == (EdgeInfo *) NULL)
668  {
669  (void) ThrowMagickException(exception,GetMagickModule(),
670  ResourceLimitError,"MemoryAllocationFailed","`%s'","");
671  points=(PointInfo *) RelinquishMagickMemory(points);
672  return(DestroyPolygonInfo(polygon_info));
673  }
674  }
675  polygon_info->edges[edge].number_points=(size_t) n;
676  polygon_info->edges[edge].scanline=(-1.0);
677  polygon_info->edges[edge].highwater=0;
678  polygon_info->edges[edge].ghostline=ghostline;
679  polygon_info->edges[edge].direction=(ssize_t) (direction > 0);
680  if (direction < 0)
681  ReversePoints(points,(size_t) n);
682  polygon_info->edges[edge].points=points;
683  polygon_info->edges[edge].bounds=bounds;
684  polygon_info->edges[edge].bounds.y1=points[0].y;
685  polygon_info->edges[edge].bounds.y2=points[n-1].y;
686  polygon_info->number_edges=edge+1;
687  points=(PointInfo *) NULL;
688  number_points=16;
689  points=(PointInfo *) AcquireQuantumMemory((size_t) number_points,
690  sizeof(*points));
691  if (points == (PointInfo *) NULL)
692  {
693  (void) ThrowMagickException(exception,GetMagickModule(),
694  ResourceLimitError,"MemoryAllocationFailed","`%s'","");
695  return(DestroyPolygonInfo(polygon_info));
696  }
697  n=1;
698  ghostline=MagickFalse;
699  points[0]=point;
700  bounds.x1=point.x;
701  bounds.x2=point.x;
702  edge++;
703  }
704  direction=next_direction;
705  if (points == (PointInfo *) NULL)
706  continue;
707  if (n == (ssize_t) number_points)
708  {
709  number_points<<=1;
710  points=(PointInfo *) ResizeQuantumMemory(points,(size_t) number_points,
711  sizeof(*points));
712  if (points == (PointInfo *) NULL)
713  {
714  (void) ThrowMagickException(exception,GetMagickModule(),
715  ResourceLimitError,"MemoryAllocationFailed","`%s'","");
716  return(DestroyPolygonInfo(polygon_info));
717  }
718  }
719  point=path_info[i].point;
720  points[n]=point;
721  if (point.x < bounds.x1)
722  bounds.x1=point.x;
723  if (point.x > bounds.x2)
724  bounds.x2=point.x;
725  n++;
726  }
727  if (points != (PointInfo *) NULL)
728  {
729  if (n < 2)
730  points=(PointInfo *) RelinquishMagickMemory(points);
731  else
732  {
733  if (edge == number_edges)
734  {
735  number_edges<<=1;
736  polygon_info->edges=(EdgeInfo *) ResizeQuantumMemory(
737  polygon_info->edges,(size_t) number_edges,
738  sizeof(*polygon_info->edges));
739  if (polygon_info->edges == (EdgeInfo *) NULL)
740  {
741  (void) ThrowMagickException(exception,GetMagickModule(),
742  ResourceLimitError,"MemoryAllocationFailed","`%s'","");
743  return(DestroyPolygonInfo(polygon_info));
744  }
745  }
746  polygon_info->edges[edge].number_points=(size_t) n;
747  polygon_info->edges[edge].scanline=(-1.0);
748  polygon_info->edges[edge].highwater=0;
749  polygon_info->edges[edge].ghostline=ghostline;
750  polygon_info->edges[edge].direction=(ssize_t) (direction > 0);
751  if (direction < 0)
752  ReversePoints(points,(size_t) n);
753  polygon_info->edges[edge].points=points;
754  polygon_info->edges[edge].bounds=bounds;
755  polygon_info->edges[edge].bounds.y1=points[0].y;
756  polygon_info->edges[edge].bounds.y2=points[n-1].y;
757  points=(PointInfo *) NULL;
758  ghostline=MagickFalse;
759  edge++;
760  polygon_info->number_edges=edge;
761  }
762  }
763  polygon_info->number_edges=edge;
764  polygon_info->number_edges=edge;
765  polygon_info->edges=(EdgeInfo *) ResizeQuantumMemory(polygon_info->edges,
766  polygon_info->number_edges,sizeof(*polygon_info->edges));
767  if (polygon_info->edges == (EdgeInfo *) NULL)
768  {
769  (void) ThrowMagickException(exception,GetMagickModule(),
770  ResourceLimitError,"MemoryAllocationFailed","`%s'","");
771  return(DestroyPolygonInfo(polygon_info));
772  }
773  for (i=0; i < (ssize_t) polygon_info->number_edges; i++)
774  {
775  EdgeInfo
776  *edge_info;
777 
778  edge_info=polygon_info->edges+i;
779  edge_info->points=(PointInfo *) ResizeQuantumMemory(edge_info->points,
780  edge_info->number_points,sizeof(*edge_info->points));
781  if (edge_info->points == (PointInfo *) NULL)
782  {
783  (void) ThrowMagickException(exception,GetMagickModule(),
784  ResourceLimitError,"MemoryAllocationFailed","`%s'","");
785  return(DestroyPolygonInfo(polygon_info));
786  }
787  }
788  qsort(polygon_info->edges,(size_t) polygon_info->number_edges,
789  sizeof(*polygon_info->edges),DrawCompareEdges);
790  if ((GetLogEventMask() & DrawEvent) != 0)
791  LogPolygonInfo(polygon_info);
792  return(polygon_info);
793 }
794 ␌
795 /*
796 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
797 % %
798 % %
799 % %
800 + C o n v e r t P r i m i t i v e T o P a t h %
801 % %
802 % %
803 % %
804 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
805 %
806 % ConvertPrimitiveToPath() converts a PrimitiveInfo structure into a vector
807 % path structure.
808 %
809 % The format of the ConvertPrimitiveToPath method is:
810 %
811 % PathInfo *ConvertPrimitiveToPath(const DrawInfo *draw_info,
812 % const PrimitiveInfo *primitive_info,ExceptionInfo *exception)
813 %
814 % A description of each parameter follows:
815 %
816 % o ConvertPrimitiveToPath() returns a vector path structure of type
817 % PathInfo.
818 %
819 % o draw_info: a structure of type DrawInfo.
820 %
821 % o primitive_info: Specifies a pointer to an PrimitiveInfo structure.
822 %
823 %
824 */
825 
826 static void LogPathInfo(const PathInfo *path_info)
827 {
828  const PathInfo
829  *p;
830 
831  (void) LogMagickEvent(DrawEvent,GetMagickModule()," begin vector-path");
832  for (p=path_info; p->code != EndCode; p++)
833  (void) LogMagickEvent(DrawEvent,GetMagickModule(),
834  " %g,%g %s",p->point.x,p->point.y,p->code == GhostlineCode ?
835  "moveto ghostline" : p->code == OpenCode ? "moveto open" :
836  p->code == MoveToCode ? "moveto" : p->code == LineToCode ? "lineto" :
837  "?");
838  (void) LogMagickEvent(DrawEvent,GetMagickModule()," end vector-path");
839 }
840 
841 static PathInfo *ConvertPrimitiveToPath(
842  const DrawInfo *magick_unused(draw_info),const PrimitiveInfo *primitive_info,
843  ExceptionInfo *exception)
844 {
845  MagickBooleanType
846  closed_subpath;
847 
848  PathInfo
849  *path_info;
850 
851  PathInfoCode
852  code;
853 
854  PointInfo
855  p,
856  q;
857 
858  ssize_t
859  i,
860  n;
861 
862  ssize_t
863  coordinates,
864  start;
865 
866  magick_unreferenced(draw_info);
867 
868  /*
869  Converts a PrimitiveInfo structure into a vector path structure.
870  */
871  switch (primitive_info->primitive)
872  {
873  case PointPrimitive:
874  case ColorPrimitive:
875  case MattePrimitive:
876  case TextPrimitive:
877  case ImagePrimitive:
878  return((PathInfo *) NULL);
879  default:
880  break;
881  }
882  for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++) ;
883  path_info=(PathInfo *) AcquireQuantumMemory((size_t) (3UL*i+1UL),
884  sizeof(*path_info));
885  if (path_info == (PathInfo *) NULL)
886  {
887  (void) ThrowMagickException(exception,GetMagickModule(),
888  ResourceLimitError,"MemoryAllocationFailed","`%s'","");
889  return((PathInfo *) NULL);
890  }
891  coordinates=0;
892  closed_subpath=MagickFalse;
893  n=0;
894  p.x=(-1.0);
895  p.y=(-1.0);
896  q.x=(-1.0);
897  q.y=(-1.0);
898  start=0;
899  for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++)
900  {
901  code=LineToCode;
902  if (coordinates <= 0)
903  {
904  /*
905  New subpath.
906  */
907  coordinates=(ssize_t) primitive_info[i].coordinates;
908  p=primitive_info[i].point;
909  start=n;
910  code=MoveToCode;
911  closed_subpath=primitive_info[i].closed_subpath;
912  }
913  coordinates--;
914  if ((code == MoveToCode) || (coordinates <= 0) ||
915  (fabs(q.x-primitive_info[i].point.x) >= MagickEpsilon) ||
916  (fabs(q.y-primitive_info[i].point.y) >= MagickEpsilon))
917  {
918  /*
919  Eliminate duplicate points.
920  */
921  path_info[n].code=code;
922  path_info[n].point=primitive_info[i].point;
923  q=primitive_info[i].point;
924  n++;
925  }
926  if (coordinates > 0)
927  continue; /* next point in current subpath */
928  if (closed_subpath != MagickFalse)
929  {
930  closed_subpath=MagickFalse;
931  continue;
932  }
933  /*
934  Mark the p point as open if the subpath is not closed.
935  */
936  path_info[start].code=OpenCode;
937  path_info[n].code=GhostlineCode;
938  path_info[n].point=primitive_info[i].point;
939  n++;
940  path_info[n].code=LineToCode;
941  path_info[n].point=p;
942  n++;
943  }
944  path_info[n].code=EndCode;
945  path_info[n].point.x=0.0;
946  path_info[n].point.y=0.0;
947  if (IsEventLogging() != MagickFalse)
948  LogPathInfo(path_info);
949  path_info=(PathInfo *) ResizeQuantumMemory(path_info,(size_t) (n+1),
950  sizeof(*path_info));
951  return(path_info);
952 }
953 ␌
954 /*
955 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
956 % %
957 % %
958 % %
959 % D e s t r o y D r a w I n f o %
960 % %
961 % %
962 % %
963 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
964 %
965 % DestroyDrawInfo() deallocates memory associated with an DrawInfo structure.
966 %
967 % The format of the DestroyDrawInfo method is:
968 %
969 % DrawInfo *DestroyDrawInfo(DrawInfo *draw_info)
970 %
971 % A description of each parameter follows:
972 %
973 % o draw_info: the draw info.
974 %
975 */
976 MagickExport DrawInfo *DestroyDrawInfo(DrawInfo *draw_info)
977 {
978  assert(draw_info != (DrawInfo *) NULL);
979  assert(draw_info->signature == MagickCoreSignature);
980  if (IsEventLogging() != MagickFalse)
981  (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
982  if (draw_info->id != (char *) NULL)
983  draw_info->id=DestroyString(draw_info->id);
984  if (draw_info->primitive != (char *) NULL)
985  draw_info->primitive=DestroyString(draw_info->primitive);
986  if (draw_info->text != (char *) NULL)
987  draw_info->text=DestroyString(draw_info->text);
988  if (draw_info->geometry != (char *) NULL)
989  draw_info->geometry=DestroyString(draw_info->geometry);
990  if (draw_info->tile != (Image *) NULL)
991  draw_info->tile=DestroyImage(draw_info->tile);
992  if (draw_info->fill_pattern != (Image *) NULL)
993  draw_info->fill_pattern=DestroyImage(draw_info->fill_pattern);
994  if (draw_info->stroke_pattern != (Image *) NULL)
995  draw_info->stroke_pattern=DestroyImage(draw_info->stroke_pattern);
996  if (draw_info->font != (char *) NULL)
997  draw_info->font=DestroyString(draw_info->font);
998  if (draw_info->metrics != (char *) NULL)
999  draw_info->metrics=DestroyString(draw_info->metrics);
1000  if (draw_info->family != (char *) NULL)
1001  draw_info->family=DestroyString(draw_info->family);
1002  if (draw_info->encoding != (char *) NULL)
1003  draw_info->encoding=DestroyString(draw_info->encoding);
1004  if (draw_info->density != (char *) NULL)
1005  draw_info->density=DestroyString(draw_info->density);
1006  if (draw_info->server_name != (char *) NULL)
1007  draw_info->server_name=(char *)
1008  RelinquishMagickMemory(draw_info->server_name);
1009  if (draw_info->dash_pattern != (double *) NULL)
1010  draw_info->dash_pattern=(double *) RelinquishMagickMemory(
1011  draw_info->dash_pattern);
1012  if (draw_info->gradient.stops != (StopInfo *) NULL)
1013  draw_info->gradient.stops=(StopInfo *) RelinquishMagickMemory(
1014  draw_info->gradient.stops);
1015  if (draw_info->clip_mask != (char *) NULL)
1016  draw_info->clip_mask=DestroyString(draw_info->clip_mask);
1017  if (draw_info->clipping_mask != (Image *) NULL)
1018  draw_info->clipping_mask=DestroyImage(draw_info->clipping_mask);
1019  if (draw_info->composite_mask != (Image *) NULL)
1020  draw_info->composite_mask=DestroyImage(draw_info->composite_mask);
1021  if (draw_info->image_info != (ImageInfo *) NULL)
1022  draw_info->image_info=DestroyImageInfo(draw_info->image_info);
1023  draw_info->signature=(~MagickCoreSignature);
1024  draw_info=(DrawInfo *) RelinquishMagickMemory(draw_info);
1025  return(draw_info);
1026 }
1027 ␌
1028 /*
1029 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1030 % %
1031 % %
1032 % %
1033 % D r a w A f f i n e I m a g e %
1034 % %
1035 % %
1036 % %
1037 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1038 %
1039 % DrawAffineImage() composites the source over the destination image as
1040 % dictated by the affine transform.
1041 %
1042 % The format of the DrawAffineImage method is:
1043 %
1044 % MagickBooleanType DrawAffineImage(Image *image,const Image *source,
1045 % const AffineMatrix *affine)
1046 %
1047 % A description of each parameter follows:
1048 %
1049 % o image: the image.
1050 %
1051 % o source: the source image.
1052 %
1053 % o affine: the affine transform.
1054 %
1055 */
1056 
1057 static SegmentInfo AffineEdge(const Image *image,const AffineMatrix *affine,
1058  const double y,const SegmentInfo *edge)
1059 {
1060  double
1061  intercept,
1062  z;
1063 
1064  double
1065  x;
1066 
1067  SegmentInfo
1068  inverse_edge;
1069 
1070  /*
1071  Determine left and right edges.
1072  */
1073  inverse_edge.x1=edge->x1;
1074  inverse_edge.y1=edge->y1;
1075  inverse_edge.x2=edge->x2;
1076  inverse_edge.y2=edge->y2;
1077  z=affine->ry*y+affine->tx;
1078  if (affine->sx >= MagickEpsilon)
1079  {
1080  intercept=(-z/affine->sx);
1081  x=intercept;
1082  if (x > inverse_edge.x1)
1083  inverse_edge.x1=x;
1084  intercept=(-z+(double) image->columns)/affine->sx;
1085  x=intercept;
1086  if (x < inverse_edge.x2)
1087  inverse_edge.x2=x;
1088  }
1089  else
1090  if (affine->sx < -MagickEpsilon)
1091  {
1092  intercept=(-z+(double) image->columns)/affine->sx;
1093  x=intercept;
1094  if (x > inverse_edge.x1)
1095  inverse_edge.x1=x;
1096  intercept=(-z/affine->sx);
1097  x=intercept;
1098  if (x < inverse_edge.x2)
1099  inverse_edge.x2=x;
1100  }
1101  else
1102  if ((z < 0.0) || ((size_t) floor(z+0.5) >= image->columns))
1103  {
1104  inverse_edge.x2=edge->x1;
1105  return(inverse_edge);
1106  }
1107  /*
1108  Determine top and bottom edges.
1109  */
1110  z=affine->sy*y+affine->ty;
1111  if (affine->rx >= MagickEpsilon)
1112  {
1113  intercept=(-z/affine->rx);
1114  x=intercept;
1115  if (x > inverse_edge.x1)
1116  inverse_edge.x1=x;
1117  intercept=(-z+(double) image->rows)/affine->rx;
1118  x=intercept;
1119  if (x < inverse_edge.x2)
1120  inverse_edge.x2=x;
1121  }
1122  else
1123  if (affine->rx < -MagickEpsilon)
1124  {
1125  intercept=(-z+(double) image->rows)/affine->rx;
1126  x=intercept;
1127  if (x > inverse_edge.x1)
1128  inverse_edge.x1=x;
1129  intercept=(-z/affine->rx);
1130  x=intercept;
1131  if (x < inverse_edge.x2)
1132  inverse_edge.x2=x;
1133  }
1134  else
1135  if ((z < 0.0) || ((size_t) floor(z+0.5) >= image->rows))
1136  {
1137  inverse_edge.x2=edge->x2;
1138  return(inverse_edge);
1139  }
1140  return(inverse_edge);
1141 }
1142 
1143 static AffineMatrix InverseAffineMatrix(const AffineMatrix *affine)
1144 {
1145  AffineMatrix
1146  inverse_affine;
1147 
1148  double
1149  determinant;
1150 
1151  determinant=PerceptibleReciprocal(affine->sx*affine->sy-affine->rx*
1152  affine->ry);
1153  inverse_affine.sx=determinant*affine->sy;
1154  inverse_affine.rx=determinant*(-affine->rx);
1155  inverse_affine.ry=determinant*(-affine->ry);
1156  inverse_affine.sy=determinant*affine->sx;
1157  inverse_affine.tx=(-affine->tx)*inverse_affine.sx-affine->ty*
1158  inverse_affine.ry;
1159  inverse_affine.ty=(-affine->tx)*inverse_affine.rx-affine->ty*
1160  inverse_affine.sy;
1161  return(inverse_affine);
1162 }
1163 
1164 MagickExport MagickBooleanType DrawAffineImage(Image *image,
1165  const Image *source,const AffineMatrix *affine)
1166 {
1167  AffineMatrix
1168  inverse_affine;
1169 
1170  CacheView
1171  *image_view,
1172  *source_view;
1173 
1175  *exception;
1176 
1177  MagickBooleanType
1178  status;
1179 
1181  zero;
1182 
1183  PointInfo
1184  extent[4],
1185  min,
1186  max,
1187  point;
1188 
1189  ssize_t
1190  i;
1191 
1192  SegmentInfo
1193  edge;
1194 
1195  ssize_t
1196  start,
1197  stop,
1198  y;
1199 
1200  /*
1201  Determine bounding box.
1202  */
1203  assert(image != (Image *) NULL);
1204  assert(image->signature == MagickCoreSignature);
1205  assert(source != (const Image *) NULL);
1206  assert(source->signature == MagickCoreSignature);
1207  if (IsEventLogging() != MagickFalse)
1208  (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
1209  assert(affine != (AffineMatrix *) NULL);
1210  extent[0].x=0.0;
1211  extent[0].y=0.0;
1212  extent[1].x=(double) source->columns;
1213  extent[1].y=0.0;
1214  extent[2].x=(double) source->columns;
1215  extent[2].y=(double) source->rows;
1216  extent[3].x=0.0;
1217  extent[3].y=(double) source->rows;
1218  for (i=0; i < 4; i++)
1219  {
1220  point=extent[i];
1221  extent[i].x=point.x*affine->sx+point.y*affine->ry+affine->tx;
1222  extent[i].y=point.x*affine->rx+point.y*affine->sy+affine->ty;
1223  }
1224  min=extent[0];
1225  max=extent[0];
1226  for (i=1; i < 4; i++)
1227  {
1228  if (min.x > extent[i].x)
1229  min.x=extent[i].x;
1230  if (min.y > extent[i].y)
1231  min.y=extent[i].y;
1232  if (max.x < extent[i].x)
1233  max.x=extent[i].x;
1234  if (max.y < extent[i].y)
1235  max.y=extent[i].y;
1236  }
1237  /*
1238  Affine transform image.
1239  */
1240  if (SetImageStorageClass(image,DirectClass) == MagickFalse)
1241  return(MagickFalse);
1242  status=MagickTrue;
1243  edge.x1=min.x;
1244  edge.y1=min.y;
1245  edge.x2=max.x;
1246  edge.y2=max.y;
1247  inverse_affine=InverseAffineMatrix(affine);
1248  if (edge.y1 < 0.0)
1249  edge.y1=0.0;
1250  if (edge.y2 > (image->rows-1.0))
1251  edge.y2=image->rows-1.0;
1252  GetMagickPixelPacket(image,&zero);
1253  exception=(&image->exception);
1254  start=CastDoubleToLong(ceil(edge.y1-0.5));
1255  stop=CastDoubleToLong(floor(edge.y2+0.5));
1256  source_view=AcquireVirtualCacheView(source,exception);
1257  image_view=AcquireAuthenticCacheView(image,exception);
1258 #if defined(MAGICKCORE_OPENMP_SUPPORT)
1259  #pragma omp parallel for schedule(static) shared(status) \
1260  magick_number_threads(source,image,stop-start,1)
1261 #endif
1262  for (y=start; y <= stop; y++)
1263  {
1264  IndexPacket
1265  *magick_restrict indexes;
1266 
1268  composite,
1269  pixel;
1270 
1271  PointInfo
1272  point;
1273 
1274  PixelPacket
1275  *magick_restrict q;
1276 
1277  SegmentInfo
1278  inverse_edge;
1279 
1280  ssize_t
1281  x,
1282  x_offset;
1283 
1284  if (status == MagickFalse)
1285  continue;
1286  inverse_edge=AffineEdge(source,&inverse_affine,(double) y,&edge);
1287  if (inverse_edge.x2 < inverse_edge.x1)
1288  continue;
1289  if (inverse_edge.x1 < 0.0)
1290  inverse_edge.x1=0.0;
1291  if (inverse_edge.x2 > image->columns-1.0)
1292  inverse_edge.x2=image->columns-1.0;
1293  q=GetCacheViewAuthenticPixels(image_view,CastDoubleToLong(
1294  ceil(inverse_edge.x1-0.5)),y,(size_t) CastDoubleToLong(floor(
1295  inverse_edge.x2+0.5)-ceil(inverse_edge.x1-0.5)+1),1,exception);
1296  if (q == (PixelPacket *) NULL)
1297  continue;
1298  indexes=GetCacheViewAuthenticIndexQueue(image_view);
1299  pixel=zero;
1300  composite=zero;
1301  x_offset=0;
1302  for (x=CastDoubleToLong(ceil(inverse_edge.x1-0.5));
1303  x <= CastDoubleToLong(floor(inverse_edge.x2+0.5)); x++)
1304  {
1305  point.x=(double) x*inverse_affine.sx+y*inverse_affine.ry+
1306  inverse_affine.tx;
1307  point.y=(double) x*inverse_affine.rx+y*inverse_affine.sy+
1308  inverse_affine.ty;
1309  status=InterpolateMagickPixelPacket(source,source_view,
1310  UndefinedInterpolatePixel,point.x,point.y,&pixel,exception);
1311  if (status == MagickFalse)
1312  break;
1313  SetMagickPixelPacket(image,q,indexes+x_offset,&composite);
1314  MagickPixelCompositeOver(&pixel,pixel.opacity,&composite,
1315  composite.opacity,&composite);
1316  SetPixelPacket(image,&composite,q,indexes+x_offset);
1317  x_offset++;
1318  q++;
1319  }
1320  if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse)
1321  status=MagickFalse;
1322  }
1323  source_view=DestroyCacheView(source_view);
1324  image_view=DestroyCacheView(image_view);
1325  return(status);
1326 }
1327 ␌
1328 /*
1329 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1330 % %
1331 % %
1332 % %
1333 + D r a w B o u n d i n g R e c t a n g l e s %
1334 % %
1335 % %
1336 % %
1337 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1338 %
1339 % DrawBoundingRectangles() draws the bounding rectangles on the image. This
1340 % is only useful for developers debugging the rendering algorithm.
1341 %
1342 % The format of the DrawBoundingRectangles method is:
1343 %
1344 % MagickBooleanType DrawBoundingRectangles(Image *image,
1345 % const DrawInfo *draw_info,PolygonInfo *polygon_info)
1346 %
1347 % A description of each parameter follows:
1348 %
1349 % o image: the image.
1350 %
1351 % o draw_info: the draw info.
1352 %
1353 % o polygon_info: Specifies a pointer to a PolygonInfo structure.
1354 %
1355 */
1356 
1357 static MagickBooleanType DrawBoundingRectangles(Image *image,
1358  const DrawInfo *draw_info,const PolygonInfo *polygon_info)
1359 {
1360  double
1361  mid;
1362 
1363  DrawInfo
1364  *clone_info;
1365 
1366  MagickStatusType
1367  status;
1368 
1369  PointInfo
1370  end,
1371  resolution,
1372  start;
1373 
1375  primitive_info[6];
1376 
1377  ssize_t
1378  i;
1379 
1380  SegmentInfo
1381  bounds;
1382 
1383  ssize_t
1384  coordinates;
1385 
1386  (void) memset(primitive_info,0,sizeof(primitive_info));
1387  clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
1388  status=QueryColorDatabase("#0000",&clone_info->fill,&image->exception);
1389  if (status == MagickFalse)
1390  {
1391  clone_info=DestroyDrawInfo(clone_info);
1392  return(MagickFalse);
1393  }
1394  resolution.x=96.0;
1395  resolution.y=96.0;
1396  if (clone_info->density != (char *) NULL)
1397  {
1398  GeometryInfo
1399  geometry_info;
1400 
1401  MagickStatusType
1402  flags;
1403 
1404  flags=ParseGeometry(clone_info->density,&geometry_info);
1405  if ((flags & RhoValue) != 0)
1406  resolution.x=geometry_info.rho;
1407  resolution.y=resolution.x;
1408  if ((flags & SigmaValue) != 0)
1409  resolution.y=geometry_info.sigma;
1410  }
1411  mid=(resolution.x/96.0)*ExpandAffine(&clone_info->affine)*
1412  clone_info->stroke_width/2.0;
1413  bounds.x1=0.0;
1414  bounds.y1=0.0;
1415  bounds.x2=0.0;
1416  bounds.y2=0.0;
1417  if (polygon_info != (PolygonInfo *) NULL)
1418  {
1419  bounds=polygon_info->edges[0].bounds;
1420  for (i=1; i < (ssize_t) polygon_info->number_edges; i++)
1421  {
1422  if (polygon_info->edges[i].bounds.x1 < (double) bounds.x1)
1423  bounds.x1=polygon_info->edges[i].bounds.x1;
1424  if (polygon_info->edges[i].bounds.y1 < (double) bounds.y1)
1425  bounds.y1=polygon_info->edges[i].bounds.y1;
1426  if (polygon_info->edges[i].bounds.x2 > (double) bounds.x2)
1427  bounds.x2=polygon_info->edges[i].bounds.x2;
1428  if (polygon_info->edges[i].bounds.y2 > (double) bounds.y2)
1429  bounds.y2=polygon_info->edges[i].bounds.y2;
1430  }
1431  bounds.x1-=mid;
1432  bounds.x1=bounds.x1 < 0.0 ? 0.0 : bounds.x1 >= (double)
1433  image->columns ? (double) image->columns-1 : bounds.x1;
1434  bounds.y1-=mid;
1435  bounds.y1=bounds.y1 < 0.0 ? 0.0 : bounds.y1 >= (double)
1436  image->rows ? (double) image->rows-1 : bounds.y1;
1437  bounds.x2+=mid;
1438  bounds.x2=bounds.x2 < 0.0 ? 0.0 : bounds.x2 >= (double)
1439  image->columns ? (double) image->columns-1 : bounds.x2;
1440  bounds.y2+=mid;
1441  bounds.y2=bounds.y2 < 0.0 ? 0.0 : bounds.y2 >= (double)
1442  image->rows ? (double) image->rows-1 : bounds.y2;
1443  for (i=0; i < (ssize_t) polygon_info->number_edges; i++)
1444  {
1445  if (polygon_info->edges[i].direction != 0)
1446  status=QueryColorDatabase("#f00",&clone_info->stroke,
1447  &image->exception);
1448  else
1449  status=QueryColorDatabase("#0f0",&clone_info->stroke,
1450  &image->exception);
1451  if (status == MagickFalse)
1452  break;
1453  start.x=(double) (polygon_info->edges[i].bounds.x1-mid);
1454  start.y=(double) (polygon_info->edges[i].bounds.y1-mid);
1455  end.x=(double) (polygon_info->edges[i].bounds.x2+mid);
1456  end.y=(double) (polygon_info->edges[i].bounds.y2+mid);
1457  primitive_info[0].primitive=RectanglePrimitive;
1458  status&=TraceRectangle(primitive_info,start,end);
1459  primitive_info[0].method=ReplaceMethod;
1460  coordinates=(ssize_t) primitive_info[0].coordinates;
1461  primitive_info[coordinates].primitive=UndefinedPrimitive;
1462  status=DrawPrimitive(image,clone_info,primitive_info);
1463  if (status == MagickFalse)
1464  break;
1465  }
1466  if (i < (ssize_t) polygon_info->number_edges)
1467  {
1468  clone_info=DestroyDrawInfo(clone_info);
1469  return(status == 0 ? MagickFalse : MagickTrue);
1470  }
1471  }
1472  status=QueryColorDatabase("#00f",&clone_info->stroke,&image->exception);
1473  if (status == MagickFalse)
1474  {
1475  clone_info=DestroyDrawInfo(clone_info);
1476  return(MagickFalse);
1477  }
1478  start.x=(double) (bounds.x1-mid);
1479  start.y=(double) (bounds.y1-mid);
1480  end.x=(double) (bounds.x2+mid);
1481  end.y=(double) (bounds.y2+mid);
1482  primitive_info[0].primitive=RectanglePrimitive;
1483  status&=TraceRectangle(primitive_info,start,end);
1484  primitive_info[0].method=ReplaceMethod;
1485  coordinates=(ssize_t) primitive_info[0].coordinates;
1486  primitive_info[coordinates].primitive=UndefinedPrimitive;
1487  status=DrawPrimitive(image,clone_info,primitive_info);
1488  clone_info=DestroyDrawInfo(clone_info);
1489  return(status == 0 ? MagickFalse : MagickTrue);
1490 }
1491 ␌
1492 /*
1493 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1494 % %
1495 % %
1496 % %
1497 % D r a w C l i p P a t h %
1498 % %
1499 % %
1500 % %
1501 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1502 %
1503 % DrawClipPath() draws the clip path on the image mask.
1504 %
1505 % The format of the DrawClipPath method is:
1506 %
1507 % MagickBooleanType DrawClipPath(Image *image,const DrawInfo *draw_info,
1508 % const char *id)
1509 %
1510 % A description of each parameter follows:
1511 %
1512 % o image: the image.
1513 %
1514 % o draw_info: the draw info.
1515 %
1516 % o id: the clip path id.
1517 %
1518 */
1519 MagickExport MagickBooleanType DrawClipPath(Image *image,
1520  const DrawInfo *draw_info,const char *id)
1521 {
1522  const char
1523  *clip_path;
1524 
1525  Image
1526  *clipping_mask;
1527 
1528  MagickBooleanType
1529  status;
1530 
1531  clip_path=GetImageArtifact(image,id);
1532  if (clip_path == (const char *) NULL)
1533  return(MagickFalse);
1534  clipping_mask=DrawClippingMask(image,draw_info,draw_info->clip_mask,clip_path,
1535  &image->exception);
1536  if (clipping_mask == (Image *) NULL)
1537  return(MagickFalse);
1538  status=SetImageClipMask(image,clipping_mask);
1539  clipping_mask=DestroyImage(clipping_mask);
1540  return(status);
1541 }
1542 ␌
1543 /*
1544 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1545 % %
1546 % %
1547 % %
1548 % D r a w C l i p p i n g M a s k %
1549 % %
1550 % %
1551 % %
1552 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1553 %
1554 % DrawClippingMask() draws the clip path and returns it as an image clipping
1555 % mask.
1556 %
1557 % The format of the DrawClippingMask method is:
1558 %
1559 % Image *DrawClippingMask(Image *image,const DrawInfo *draw_info,
1560 % const char *id,const char *clip_path,ExceptionInfo *exception)
1561 %
1562 % A description of each parameter follows:
1563 %
1564 % o image: the image.
1565 %
1566 % o draw_info: the draw info.
1567 %
1568 % o id: the clip path id.
1569 %
1570 % o clip_path: the clip path.
1571 %
1572 % o exception: return any errors or warnings in this structure.
1573 %
1574 */
1575 static Image *DrawClippingMask(Image *image,const DrawInfo *draw_info,
1576  const char *id,const char *clip_path,ExceptionInfo *exception)
1577 {
1578  DrawInfo
1579  *clone_info;
1580 
1581  Image
1582  *clip_mask;
1583 
1584  MagickStatusType
1585  status;
1586 
1587  /*
1588  Draw a clip path.
1589  */
1590  assert(image != (Image *) NULL);
1591  assert(image->signature == MagickCoreSignature);
1592  assert(draw_info != (const DrawInfo *) NULL);
1593  if (IsEventLogging() != MagickFalse)
1594  (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
1595  clip_mask=AcquireImage((const ImageInfo *) NULL);
1596  status=SetImageExtent(clip_mask,image->columns,image->rows);
1597  if (status == MagickFalse)
1598  return(DestroyImage(clip_mask));
1599  status=SetImageClipMask(image,(Image *) NULL);
1600  status=QueryColorCompliance("#0000",AllCompliance,
1601  &clip_mask->background_color,exception);
1602  clip_mask->background_color.opacity=(Quantum) TransparentOpacity;
1603  status=SetImageBackgroundColor(clip_mask);
1604  if (draw_info->debug != MagickFalse)
1605  (void) LogMagickEvent(DrawEvent,GetMagickModule(),"\nbegin clip-path %s",
1606  id);
1607  clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
1608  (void) CloneString(&clone_info->primitive,clip_path);
1609  status=QueryColorCompliance("#ffffff",AllCompliance,&clone_info->fill,
1610  exception);
1611  if (clone_info->clip_mask != (char *) NULL)
1612  clone_info->clip_mask=DestroyString(clone_info->clip_mask);
1613  (void) QueryColorCompliance("#00000000",AllCompliance,&clone_info->stroke,
1614  exception);
1615  clone_info->stroke_width=0.0;
1616  clone_info->opacity=OpaqueOpacity;
1617  clone_info->clip_path=MagickTrue;
1618  status=RenderMVGContent(clip_mask,clone_info,0);
1619  clone_info=DestroyDrawInfo(clone_info);
1620  status&=SeparateImageChannel(clip_mask,TrueAlphaChannel);
1621  if (draw_info->compliance != SVGCompliance)
1622  status&=NegateImage(clip_mask,MagickFalse);
1623  if (status == MagickFalse)
1624  clip_mask=DestroyImage(clip_mask);
1625  if (draw_info->debug != MagickFalse)
1626  (void) LogMagickEvent(DrawEvent,GetMagickModule(),"end clip-path");
1627  return(clip_mask);
1628 }
1629 ␌
1630 /*
1631 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1632 % %
1633 % %
1634 % %
1635 % D r a w C o m p o s i t e M a s k %
1636 % %
1637 % %
1638 % %
1639 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1640 %
1641 % DrawCompositeMask() draws the mask path and returns it as an image mask.
1642 %
1643 % The format of the DrawCompositeMask method is:
1644 %
1645 % Image *DrawCompositeMask(Image *image,const DrawInfo *draw_info,
1646 % const char *id,const char *mask_path,ExceptionInfo *exception)
1647 %
1648 % A description of each parameter follows:
1649 %
1650 % o image: the image.
1651 %
1652 % o draw_info: the draw info.
1653 %
1654 % o id: the mask path id.
1655 %
1656 % o mask_path: the mask path.
1657 %
1658 % o exception: return any errors or warnings in this structure.
1659 %
1660 */
1661 static Image *DrawCompositeMask(Image *image,const DrawInfo *draw_info,
1662  const char *id,const char *mask_path,ExceptionInfo *exception)
1663 {
1664  Image
1665  *composite_mask;
1666 
1667  DrawInfo
1668  *clone_info;
1669 
1670  MagickStatusType
1671  status;
1672 
1673  /*
1674  Draw a mask path.
1675  */
1676  assert(image != (Image *) NULL);
1677  assert(image->signature == MagickCoreSignature);
1678  assert(draw_info != (const DrawInfo *) NULL);
1679  if (IsEventLogging() != MagickFalse)
1680  (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
1681  composite_mask=AcquireImage((const ImageInfo *) NULL);
1682  status=SetImageExtent(composite_mask,image->columns,image->rows);
1683  if (status == MagickFalse)
1684  return(DestroyImage(composite_mask));
1685  status=SetImageMask(image,(Image *) NULL);
1686  status=QueryColorCompliance("#0000",AllCompliance,
1687  &composite_mask->background_color,exception);
1688  composite_mask->background_color.opacity=(Quantum) TransparentOpacity;
1689  (void) SetImageBackgroundColor(composite_mask);
1690  if (draw_info->debug != MagickFalse)
1691  (void) LogMagickEvent(DrawEvent,GetMagickModule(),"\nbegin mask-path %s",
1692  id);
1693  clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
1694  (void) CloneString(&clone_info->primitive,mask_path);
1695  status=QueryColorCompliance("#ffffff",AllCompliance,&clone_info->fill,
1696  exception);
1697  status=QueryColorCompliance("#00000000",AllCompliance,&clone_info->stroke,
1698  exception);
1699  clone_info->stroke_width=0.0;
1700  clone_info->opacity=OpaqueOpacity;
1701  status=RenderMVGContent(composite_mask,clone_info,0);
1702  clone_info=DestroyDrawInfo(clone_info);
1703  status&=SeparateImageChannel(composite_mask,TrueAlphaChannel);
1704  status&=NegateImage(composite_mask,MagickFalse);
1705  if (status == MagickFalse)
1706  composite_mask=DestroyImage(composite_mask);
1707  if (draw_info->debug != MagickFalse)
1708  (void) LogMagickEvent(DrawEvent,GetMagickModule(),"end mask-path");
1709  return(composite_mask);
1710 }
1711 ␌
1712 /*
1713 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1714 % %
1715 % %
1716 % %
1717 + D r a w D a s h P o l y g o n %
1718 % %
1719 % %
1720 % %
1721 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1722 %
1723 % DrawDashPolygon() draws a dashed polygon (line, rectangle, ellipse) on the
1724 % image while respecting the dash offset and dash pattern attributes.
1725 %
1726 % The format of the DrawDashPolygon method is:
1727 %
1728 % MagickBooleanType DrawDashPolygon(const DrawInfo *draw_info,
1729 % const PrimitiveInfo *primitive_info,Image *image)
1730 %
1731 % A description of each parameter follows:
1732 %
1733 % o draw_info: the draw info.
1734 %
1735 % o primitive_info: Specifies a pointer to a PrimitiveInfo structure.
1736 %
1737 % o image: the image.
1738 %
1739 %
1740 */
1741 static MagickBooleanType DrawDashPolygon(const DrawInfo *draw_info,
1742  const PrimitiveInfo *primitive_info,Image *image)
1743 {
1744  double
1745  dx,
1746  dy,
1747  length,
1748  maximum_length,
1749  offset,
1750  scale,
1751  total_length;
1752 
1753  DrawInfo
1754  *clone_info;
1755 
1756  MagickStatusType
1757  status;
1758 
1760  *dash_polygon;
1761 
1762  ssize_t
1763  i;
1764 
1765  size_t
1766  number_vertices;
1767 
1768  ssize_t
1769  j,
1770  n;
1771 
1772  assert(draw_info != (const DrawInfo *) NULL);
1773  if (draw_info->debug != MagickFalse)
1774  (void) LogMagickEvent(DrawEvent,GetMagickModule()," begin draw-dash");
1775  for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++) ;
1776  number_vertices=(size_t) i;
1777  dash_polygon=(PrimitiveInfo *) AcquireQuantumMemory((size_t)
1778  (2UL*number_vertices+32UL),sizeof(*dash_polygon));
1779  if (dash_polygon == (PrimitiveInfo *) NULL)
1780  {
1781  (void) ThrowMagickException(&image->exception,GetMagickModule(),
1782  ResourceLimitError,"MemoryAllocationFailed","`%s'","");
1783  return(MagickFalse);
1784  }
1785  (void) memset(dash_polygon,0,(2UL*number_vertices+32UL)*
1786  sizeof(*dash_polygon));
1787  clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
1788  clone_info->miterlimit=0;
1789  dash_polygon[0]=primitive_info[0];
1790  scale=ExpandAffine(&draw_info->affine);
1791  length=scale*draw_info->dash_pattern[0];
1792  offset=fabs(draw_info->dash_offset) >= MagickEpsilon ?
1793  scale*draw_info->dash_offset : 0.0;
1794  j=1;
1795  for (n=0; offset > 0.0; j=0)
1796  {
1797  if (draw_info->dash_pattern[n] <= 0.0)
1798  break;
1799  length=scale*(draw_info->dash_pattern[n]+(n == 0 ? -0.5 : 0.5));
1800  if (offset > length)
1801  {
1802  offset-=length;
1803  n++;
1804  length=scale*draw_info->dash_pattern[n];
1805  continue;
1806  }
1807  if (offset < length)
1808  {
1809  length-=offset;
1810  offset=0.0;
1811  break;
1812  }
1813  offset=0.0;
1814  n++;
1815  }
1816  status=MagickTrue;
1817  maximum_length=0.0;
1818  total_length=0.0;
1819  for (i=1; (i < (ssize_t) number_vertices) && (length >= 0.0); i++)
1820  {
1821  dx=primitive_info[i].point.x-primitive_info[i-1].point.x;
1822  dy=primitive_info[i].point.y-primitive_info[i-1].point.y;
1823  maximum_length=hypot(dx,dy);
1824  if (maximum_length > (double) (MaxBezierCoordinates >> 2))
1825  continue;
1826  if (fabs(length) < MagickEpsilon)
1827  {
1828  if (fabs(draw_info->dash_pattern[n]) >= MagickEpsilon)
1829  n++;
1830  if (fabs(draw_info->dash_pattern[n]) < MagickEpsilon)
1831  n=0;
1832  length=scale*draw_info->dash_pattern[n];
1833  }
1834  for (total_length=0.0; (length >= 0.0) && (maximum_length >= (total_length+length)); )
1835  {
1836  total_length+=length;
1837  if ((n & 0x01) != 0)
1838  {
1839  dash_polygon[0]=primitive_info[0];
1840  dash_polygon[0].point.x=(double) (primitive_info[i-1].point.x+dx*
1841  total_length*PerceptibleReciprocal(maximum_length));
1842  dash_polygon[0].point.y=(double) (primitive_info[i-1].point.y+dy*
1843  total_length*PerceptibleReciprocal(maximum_length));
1844  j=1;
1845  }
1846  else
1847  {
1848  if ((j+1) > (ssize_t) number_vertices)
1849  break;
1850  dash_polygon[j]=primitive_info[i-1];
1851  dash_polygon[j].point.x=(double) (primitive_info[i-1].point.x+dx*
1852  total_length*PerceptibleReciprocal(maximum_length));
1853  dash_polygon[j].point.y=(double) (primitive_info[i-1].point.y+dy*
1854  total_length*PerceptibleReciprocal(maximum_length));
1855  dash_polygon[j].coordinates=1;
1856  j++;
1857  dash_polygon[0].coordinates=(size_t) j;
1858  dash_polygon[j].primitive=UndefinedPrimitive;
1859  status&=DrawStrokePolygon(image,clone_info,dash_polygon);
1860  if (status == MagickFalse)
1861  break;
1862  }
1863  if (fabs(draw_info->dash_pattern[n]) >= MagickEpsilon)
1864  n++;
1865  if (fabs(draw_info->dash_pattern[n]) < MagickEpsilon)
1866  n=0;
1867  length=scale*draw_info->dash_pattern[n];
1868  }
1869  length-=(maximum_length-total_length);
1870  if ((n & 0x01) != 0)
1871  continue;
1872  dash_polygon[j]=primitive_info[i];
1873  dash_polygon[j].coordinates=1;
1874  j++;
1875  }
1876  if ((status != MagickFalse) && (total_length < maximum_length) &&
1877  ((n & 0x01) == 0) && (j > 1))
1878  {
1879  dash_polygon[j]=primitive_info[i-1];
1880  dash_polygon[j].point.x+=MagickEpsilon;
1881  dash_polygon[j].point.y+=MagickEpsilon;
1882  dash_polygon[j].coordinates=1;
1883  j++;
1884  dash_polygon[0].coordinates=(size_t) j;
1885  dash_polygon[j].primitive=UndefinedPrimitive;
1886  status&=DrawStrokePolygon(image,clone_info,dash_polygon);
1887  }
1888  dash_polygon=(PrimitiveInfo *) RelinquishMagickMemory(dash_polygon);
1889  clone_info=DestroyDrawInfo(clone_info);
1890  if (draw_info->debug != MagickFalse)
1891  (void) LogMagickEvent(DrawEvent,GetMagickModule()," end draw-dash");
1892  return(status != 0 ? MagickTrue : MagickFalse);
1893 }
1894 ␌
1895 /*
1896 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1897 % %
1898 % %
1899 % %
1900 % D r a w G r a d i e n t I m a g e %
1901 % %
1902 % %
1903 % %
1904 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1905 %
1906 % DrawGradientImage() draws a linear gradient on the image.
1907 %
1908 % The format of the DrawGradientImage method is:
1909 %
1910 % MagickBooleanType DrawGradientImage(Image *image,
1911 % const DrawInfo *draw_info)
1912 %
1913 % A description of each parameter follows:
1914 %
1915 % o image: the image.
1916 %
1917 % o draw_info: the draw info.
1918 %
1919 */
1920 
1921 static inline double GetStopColorOffset(const GradientInfo *gradient,
1922  const ssize_t x,const ssize_t y)
1923 {
1924  switch (gradient->type)
1925  {
1926  case UndefinedGradient:
1927  case LinearGradient:
1928  {
1929  double
1930  gamma,
1931  length,
1932  offset,
1933  scale;
1934 
1935  PointInfo
1936  p,
1937  q;
1938 
1939  const SegmentInfo
1940  *gradient_vector;
1941 
1942  gradient_vector=(&gradient->gradient_vector);
1943  p.x=gradient_vector->x2-gradient_vector->x1;
1944  p.y=gradient_vector->y2-gradient_vector->y1;
1945  q.x=(double) x-gradient_vector->x1;
1946  q.y=(double) y-gradient_vector->y1;
1947  length=sqrt(q.x*q.x+q.y*q.y);
1948  gamma=sqrt(p.x*p.x+p.y*p.y)*length;
1949  gamma=PerceptibleReciprocal(gamma);
1950  scale=p.x*q.x+p.y*q.y;
1951  offset=gamma*scale*length;
1952  return(offset);
1953  }
1954  case RadialGradient:
1955  {
1956  PointInfo
1957  v;
1958 
1959  if (gradient->spread == RepeatSpread)
1960  {
1961  v.x=(double) x-gradient->center.x;
1962  v.y=(double) y-gradient->center.y;
1963  return(sqrt(v.x*v.x+v.y*v.y));
1964  }
1965  v.x=(double) (((x-gradient->center.x)*cos(DegreesToRadians(
1966  gradient->angle)))+((y-gradient->center.y)*sin(DegreesToRadians(
1967  gradient->angle))))*PerceptibleReciprocal(gradient->radii.x);
1968  v.y=(double) (((x-gradient->center.x)*sin(DegreesToRadians(
1969  gradient->angle)))-((y-gradient->center.y)*cos(DegreesToRadians(
1970  gradient->angle))))*PerceptibleReciprocal(gradient->radii.y);
1971  return(sqrt(v.x*v.x+v.y*v.y));
1972  }
1973  }
1974  return(0.0);
1975 }
1976 
1977 MagickExport MagickBooleanType DrawGradientImage(Image *image,
1978  const DrawInfo *draw_info)
1979 {
1980  CacheView
1981  *image_view;
1982 
1983  const GradientInfo
1984  *gradient;
1985 
1986  const SegmentInfo
1987  *gradient_vector;
1988 
1989  double
1990  length;
1991 
1993  *exception;
1994 
1995  MagickBooleanType
1996  status;
1997 
1999  zero;
2000 
2001  PointInfo
2002  point;
2003 
2005  bounding_box;
2006 
2007  ssize_t
2008  y;
2009 
2010  /*
2011  Draw linear or radial gradient on image.
2012  */
2013  assert(image != (Image *) NULL);
2014  assert(image->signature == MagickCoreSignature);
2015  assert(draw_info != (const DrawInfo *) NULL);
2016  if (IsEventLogging() != MagickFalse)
2017  (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
2018  gradient=(&draw_info->gradient);
2019  gradient_vector=(&gradient->gradient_vector);
2020  point.x=gradient_vector->x2-gradient_vector->x1;
2021  point.y=gradient_vector->y2-gradient_vector->y1;
2022  length=sqrt(point.x*point.x+point.y*point.y);
2023  bounding_box=gradient->bounding_box;
2024  status=MagickTrue;
2025  exception=(&image->exception);
2026  GetMagickPixelPacket(image,&zero);
2027  image_view=AcquireAuthenticCacheView(image,exception);
2028 #if defined(MAGICKCORE_OPENMP_SUPPORT)
2029  #pragma omp parallel for schedule(static) shared(status) \
2030  magick_number_threads(image,image,bounding_box.height-bounding_box.y,2)
2031 #endif
2032  for (y=bounding_box.y; y < (ssize_t) bounding_box.height; y++)
2033  {
2034  double
2035  alpha,
2036  offset;
2037 
2039  composite,
2040  pixel;
2041 
2042  IndexPacket
2043  *magick_restrict indexes;
2044 
2045  ssize_t
2046  i,
2047  x;
2048 
2049  PixelPacket
2050  *magick_restrict q;
2051 
2052  ssize_t
2053  j;
2054 
2055  if (status == MagickFalse)
2056  continue;
2057  q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,exception);
2058  if (q == (PixelPacket *) NULL)
2059  {
2060  status=MagickFalse;
2061  continue;
2062  }
2063  indexes=GetCacheViewAuthenticIndexQueue(image_view);
2064  pixel=zero;
2065  composite=zero;
2066  offset=GetStopColorOffset(gradient,0,y);
2067  if (gradient->type != RadialGradient)
2068  offset*=PerceptibleReciprocal(length);
2069  for (x=bounding_box.x; x < (ssize_t) bounding_box.width; x++)
2070  {
2071  SetMagickPixelPacket(image,q,indexes+x,&pixel);
2072  switch (gradient->spread)
2073  {
2074  case UndefinedSpread:
2075  case PadSpread:
2076  {
2077  if ((x != CastDoubleToLong(ceil(gradient_vector->x1-0.5))) ||
2078  (y != CastDoubleToLong(ceil(gradient_vector->y1-0.5))))
2079  {
2080  offset=GetStopColorOffset(gradient,x,y);
2081  if (gradient->type != RadialGradient)
2082  offset*=PerceptibleReciprocal(length);
2083  }
2084  for (i=0; i < (ssize_t) gradient->number_stops; i++)
2085  if (offset < gradient->stops[i].offset)
2086  break;
2087  if ((offset < 0.0) || (i == 0))
2088  composite=gradient->stops[0].color;
2089  else
2090  if ((offset > 1.0) || (i == (ssize_t) gradient->number_stops))
2091  composite=gradient->stops[gradient->number_stops-1].color;
2092  else
2093  {
2094  j=i;
2095  i--;
2096  alpha=(offset-gradient->stops[i].offset)/
2097  (gradient->stops[j].offset-gradient->stops[i].offset);
2098  MagickPixelCompositeBlend(&gradient->stops[i].color,1.0-alpha,
2099  &gradient->stops[j].color,alpha,&composite);
2100  }
2101  break;
2102  }
2103  case ReflectSpread:
2104  {
2105  if ((x != CastDoubleToLong(ceil(gradient_vector->x1-0.5))) ||
2106  (y != CastDoubleToLong(ceil(gradient_vector->y1-0.5))))
2107  {
2108  offset=GetStopColorOffset(gradient,x,y);
2109  if (gradient->type != RadialGradient)
2110  offset*=PerceptibleReciprocal(length);
2111  }
2112  if (offset < 0.0)
2113  offset=(-offset);
2114  if ((ssize_t) fmod(offset,2.0) == 0)
2115  offset=fmod(offset,1.0);
2116  else
2117  offset=1.0-fmod(offset,1.0);
2118  for (i=0; i < (ssize_t) gradient->number_stops; i++)
2119  if (offset < gradient->stops[i].offset)
2120  break;
2121  if (i == 0)
2122  composite=gradient->stops[0].color;
2123  else
2124  if (i == (ssize_t) gradient->number_stops)
2125  composite=gradient->stops[gradient->number_stops-1].color;
2126  else
2127  {
2128  j=i;
2129  i--;
2130  alpha=(offset-gradient->stops[i].offset)/
2131  (gradient->stops[j].offset-gradient->stops[i].offset);
2132  MagickPixelCompositeBlend(&gradient->stops[i].color,1.0-alpha,
2133  &gradient->stops[j].color,alpha,&composite);
2134  }
2135  break;
2136  }
2137  case RepeatSpread:
2138  {
2139  double
2140  repeat;
2141 
2142  MagickBooleanType
2143  antialias;
2144 
2145  antialias=MagickFalse;
2146  repeat=0.0;
2147  if ((x != CastDoubleToLong(ceil(gradient_vector->x1-0.5))) ||
2148  (y != CastDoubleToLong(ceil(gradient_vector->y1-0.5))))
2149  {
2150  offset=GetStopColorOffset(gradient,x,y);
2151  if (gradient->type == LinearGradient)
2152  {
2153  repeat=fmod(offset,length);
2154  if (repeat < 0.0)
2155  repeat=length-fmod(-repeat,length);
2156  else
2157  repeat=fmod(offset,length);
2158  antialias=(repeat < length) && ((repeat+1.0) > length) ?
2159  MagickTrue : MagickFalse;
2160  offset=PerceptibleReciprocal(length)*repeat;
2161  }
2162  else
2163  {
2164  repeat=fmod(offset,(double) gradient->radius);
2165  if (repeat < 0.0)
2166  repeat=gradient->radius-fmod(-repeat,
2167  (double) gradient->radius);
2168  else
2169  repeat=fmod(offset,(double) gradient->radius);
2170  antialias=repeat+1.0 > gradient->radius ? MagickTrue :
2171  MagickFalse;
2172  offset=repeat*PerceptibleReciprocal(gradient->radius);
2173  }
2174  }
2175  for (i=0; i < (ssize_t) gradient->number_stops; i++)
2176  if (offset < gradient->stops[i].offset)
2177  break;
2178  if (i == 0)
2179  composite=gradient->stops[0].color;
2180  else
2181  if (i == (ssize_t) gradient->number_stops)
2182  composite=gradient->stops[gradient->number_stops-1].color;
2183  else
2184  {
2185  j=i;
2186  i--;
2187  alpha=(offset-gradient->stops[i].offset)/
2188  (gradient->stops[j].offset-gradient->stops[i].offset);
2189  if (antialias != MagickFalse)
2190  {
2191  if (gradient->type == LinearGradient)
2192  alpha=length-repeat;
2193  else
2194  alpha=gradient->radius-repeat;
2195  i=0;
2196  j=(ssize_t) gradient->number_stops-1L;
2197  }
2198  MagickPixelCompositeBlend(&gradient->stops[i].color,1.0-alpha,
2199  &gradient->stops[j].color,alpha,&composite);
2200  }
2201  break;
2202  }
2203  }
2204  MagickPixelCompositeOver(&composite,composite.opacity,&pixel,
2205  pixel.opacity,&pixel);
2206  SetPixelPacket(image,&pixel,q,indexes+x);
2207  q++;
2208  }
2209  if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse)
2210  status=MagickFalse;
2211  }
2212  image_view=DestroyCacheView(image_view);
2213  return(status);
2214 }
2215 ␌
2216 /*
2217 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2218 % %
2219 % %
2220 % %
2221 % D r a w I m a g e %
2222 % %
2223 % %
2224 % %
2225 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2226 %
2227 % DrawImage() draws a graphic primitive on your image. The primitive
2228 % may be represented as a string or filename. Precede the filename with an
2229 % "at" sign (@) and the contents of the file are drawn on the image. You
2230 % can affect how text is drawn by setting one or more members of the draw
2231 % info structure.
2232 %
2233 % The format of the DrawImage method is:
2234 %
2235 % MagickBooleanType DrawImage(Image *image,const DrawInfo *draw_info)
2236 %
2237 % A description of each parameter follows:
2238 %
2239 % o image: the image.
2240 %
2241 % o draw_info: the draw info.
2242 %
2243 */
2244 
2245 static MagickBooleanType CheckPrimitiveExtent(MVGInfo *mvg_info,
2246  const double pad)
2247 {
2248  char
2249  **text = (char **) NULL;
2250 
2251  double
2252  extent;
2253 
2254  size_t
2255  quantum;
2256 
2257  ssize_t
2258  i;
2259 
2260  /*
2261  Check if there is enough storage for drawing primitives.
2262  */
2263  quantum=sizeof(**mvg_info->primitive_info);
2264  extent=(double) mvg_info->offset+pad+(PrimitiveExtentPad+1)*quantum;
2265  if (extent <= (double) *mvg_info->extent)
2266  return(MagickTrue);
2267  if ((extent >= (double) MAGICK_SSIZE_MAX) || (IsNaN(extent) != 0))
2268  return(MagickFalse);
2269  if (mvg_info->offset > 0)
2270  {
2271  text=(char **) AcquireQuantumMemory(mvg_info->offset,sizeof(*text));
2272  if (text == (char **) NULL)
2273  return(MagickFalse);
2274  for (i=0; i < mvg_info->offset; i++)
2275  text[i]=(*mvg_info->primitive_info)[i].text;
2276  }
2277  *mvg_info->primitive_info=(PrimitiveInfo *) ResizeQuantumMemory(
2278  *mvg_info->primitive_info,(size_t) (extent+1),quantum);
2279  if (*mvg_info->primitive_info != (PrimitiveInfo *) NULL)
2280  {
2281  if (text != (char **) NULL)
2282  text=(char **) RelinquishMagickMemory(text);
2283  *mvg_info->extent=(size_t) extent;
2284  for (i=mvg_info->offset+1; i <= (ssize_t) extent; i++)
2285  {
2286  (*mvg_info->primitive_info)[i].primitive=UndefinedPrimitive;
2287  (*mvg_info->primitive_info)[i].text=(char *) NULL;
2288  }
2289  return(MagickTrue);
2290  }
2291  /*
2292  Reallocation failed, allocate a primitive to facilitate unwinding.
2293  */
2294  if (text != (char **) NULL)
2295  {
2296  for (i=0; i < mvg_info->offset; i++)
2297  if (text[i] != (char *) NULL)
2298  text[i]=DestroyString(text[i]);
2299  text=(char **) RelinquishMagickMemory(text);
2300  }
2301  (void) ThrowMagickException(mvg_info->exception,GetMagickModule(),
2302  ResourceLimitError,"MemoryAllocationFailed","`%s'","");
2303  *mvg_info->primitive_info=(PrimitiveInfo *) AcquireCriticalMemory((size_t)
2304  (PrimitiveExtentPad+1)*quantum);
2305  (void) memset(*mvg_info->primitive_info,0,(size_t) ((PrimitiveExtentPad+1)*
2306  quantum));
2307  *mvg_info->extent=1;
2308  mvg_info->offset=0;
2309  return(MagickFalse);
2310 }
2311 
2312 static inline double GetDrawValue(const char *magick_restrict string,
2313  char **magick_restrict sentinel)
2314 {
2315  char
2316  **magick_restrict q;
2317 
2318  double
2319  value;
2320 
2321  q=sentinel;
2322  value=InterpretLocaleValue(string,q);
2323  sentinel=q;
2324  return(value);
2325 }
2326 
2327 static int MVGMacroCompare(const void *target,const void *source)
2328 {
2329  const char
2330  *p,
2331  *q;
2332 
2333  p=(const char *) target;
2334  q=(const char *) source;
2335  return(strcmp(p,q));
2336 }
2337 
2338 static SplayTreeInfo *GetMVGMacros(const char *primitive)
2339 {
2340  char
2341  *macro,
2342  *token;
2343 
2344  const char
2345  *q;
2346 
2347  size_t
2348  extent;
2349 
2351  *macros;
2352 
2353  /*
2354  Scan graphic primitives for definitions and classes.
2355  */
2356  if (primitive == (const char *) NULL)
2357  return((SplayTreeInfo *) NULL);
2358  macros=NewSplayTree(MVGMacroCompare,RelinquishMagickMemory,
2359  RelinquishMagickMemory);
2360  macro=AcquireString(primitive);
2361  token=AcquireString(primitive);
2362  extent=strlen(token)+MagickPathExtent;
2363  for (q=primitive; *q != '\0'; )
2364  {
2365  if (GetNextToken(q,&q,extent,token) < 1)
2366  break;
2367  if (*token == '\0')
2368  break;
2369  if (LocaleCompare("push",token) == 0)
2370  {
2371  const char
2372  *end,
2373  *start;
2374 
2375  (void) GetNextToken(q,&q,extent,token);
2376  if (*q == '"')
2377  {
2378  char
2379  name[MagickPathExtent];
2380 
2381  const char
2382  *p;
2383 
2384  ssize_t
2385  n;
2386 
2387  /*
2388  Named macro (e.g. push graphic-context "wheel").
2389  */
2390  (void) GetNextToken(q,&q,extent,token);
2391  start=q;
2392  end=q;
2393  (void) CopyMagickString(name,token,MagickPathExtent);
2394  n=1;
2395  for (p=q; *p != '\0'; )
2396  {
2397  if (GetNextToken(p,&p,extent,token) < 1)
2398  break;
2399  if (*token == '\0')
2400  break;
2401  if (LocaleCompare(token,"pop") == 0)
2402  {
2403  end=p-strlen(token)-1;
2404  n--;
2405  }
2406  if (LocaleCompare(token,"push") == 0)
2407  n++;
2408  if ((n == 0) && (end > start))
2409  {
2410  /*
2411  Extract macro.
2412  */
2413  (void) GetNextToken(p,&p,extent,token);
2414  (void) CopyMagickString(macro,start,(size_t) (end-start));
2415  (void) AddValueToSplayTree(macros,ConstantString(name),
2416  ConstantString(macro));
2417  break;
2418  }
2419  }
2420  }
2421  }
2422  }
2423  token=DestroyString(token);
2424  macro=DestroyString(macro);
2425  return(macros);
2426 }
2427 
2428 static inline MagickBooleanType IsPoint(const char *point)
2429 {
2430  char
2431  *p;
2432 
2433  double
2434  value;
2435 
2436  value=GetDrawValue(point,&p);
2437  return((fabs(value) < MagickEpsilon) && (p == point) ? MagickFalse :
2438  MagickTrue);
2439 }
2440 
2441 static inline MagickBooleanType TracePoint(PrimitiveInfo *primitive_info,
2442  const PointInfo point)
2443 {
2444  primitive_info->coordinates=1;
2445  primitive_info->closed_subpath=MagickFalse;
2446  primitive_info->point=point;
2447  return(MagickTrue);
2448 }
2449 
2450 static MagickBooleanType RenderMVGContent(Image *image,
2451  const DrawInfo *draw_info,const size_t depth)
2452 {
2453 #define RenderImageTag "Render/Image"
2454 
2455  AffineMatrix
2456  affine,
2457  current;
2458 
2459  char
2460  key[2*MaxTextExtent],
2461  keyword[MaxTextExtent],
2462  geometry[MaxTextExtent],
2463  name[MaxTextExtent],
2464  *next_token,
2465  pattern[MaxTextExtent],
2466  *primitive,
2467  *token;
2468 
2469  const char
2470  *p,
2471  *q;
2472 
2473  double
2474  angle,
2475  coordinates,
2476  cursor,
2477  factor,
2478  primitive_extent;
2479 
2480  DrawInfo
2481  *clone_info,
2482  **graphic_context;
2483 
2484  MagickBooleanType
2485  proceed;
2486 
2487  MagickStatusType
2488  status;
2489 
2490  MVGInfo
2491  mvg_info;
2492 
2493  PointInfo
2494  point;
2495 
2496  PixelPacket
2497  start_color;
2498 
2500  *primitive_info;
2501 
2502  PrimitiveType
2503  primitive_type;
2504 
2505  SegmentInfo
2506  bounds;
2507 
2508  size_t
2509  extent,
2510  number_points;
2511 
2513  *macros;
2514 
2515  ssize_t
2516  defsDepth,
2517  i,
2518  j,
2519  k,
2520  n,
2521  symbolDepth,
2522  x;
2523 
2524  TypeMetric
2525  metrics;
2526 
2527  assert(image != (Image *) NULL);
2528  assert(image->signature == MagickCoreSignature);
2529  assert(draw_info != (DrawInfo *) NULL);
2530  assert(draw_info->signature == MagickCoreSignature);
2531  if (IsEventLogging() != MagickFalse)
2532  (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
2533  if (depth > MagickMaxRecursionDepth)
2534  ThrowBinaryImageException(DrawError,"VectorGraphicsNestedTooDeeply",
2535  image->filename);
2536  if ((draw_info->primitive == (char *) NULL) ||
2537  (*draw_info->primitive == '\0'))
2538  return(MagickFalse);
2539  if (draw_info->debug != MagickFalse)
2540  (void) LogMagickEvent(DrawEvent,GetMagickModule(),"begin draw-image");
2541  if (SetImageStorageClass(image,DirectClass) == MagickFalse)
2542  return(MagickFalse);
2543  if (image->matte == MagickFalse)
2544  {
2545  status=SetImageAlphaChannel(image,OpaqueAlphaChannel);
2546  if (status == MagickFalse)
2547  return(MagickFalse);
2548  }
2549  primitive=(char *) NULL;
2550  if ((*draw_info->primitive == '@') && (strlen(draw_info->primitive) > 1) &&
2551  (*(draw_info->primitive+1) != '-') && (depth == 0))
2552  primitive=FileToString(draw_info->primitive,~0UL,&image->exception);
2553  else
2554  primitive=AcquireString(draw_info->primitive);
2555  if (primitive == (char *) NULL)
2556  return(MagickFalse);
2557  primitive_extent=(double) strlen(primitive);
2558  (void) SetImageArtifact(image,"mvg:vector-graphics",primitive);
2559  n=0;
2560  /*
2561  Allocate primitive info memory.
2562  */
2563  graphic_context=(DrawInfo **) AcquireMagickMemory(sizeof(*graphic_context));
2564  if (graphic_context == (DrawInfo **) NULL)
2565  {
2566  primitive=DestroyString(primitive);
2567  ThrowBinaryImageException(ResourceLimitError,"MemoryAllocationFailed",
2568  image->filename);
2569  }
2570  number_points=(size_t) PrimitiveExtentPad;
2571  primitive_info=(PrimitiveInfo *) AcquireQuantumMemory((size_t)
2572  (number_points+1),sizeof(*primitive_info));
2573  if (primitive_info == (PrimitiveInfo *) NULL)
2574  {
2575  primitive=DestroyString(primitive);
2576  for ( ; n >= 0; n--)
2577  graphic_context[n]=DestroyDrawInfo(graphic_context[n]);
2578  graphic_context=(DrawInfo **) RelinquishMagickMemory(graphic_context);
2579  ThrowBinaryImageException(ResourceLimitError,"MemoryAllocationFailed",
2580  image->filename);
2581  }
2582  (void) memset(primitive_info,0,(size_t) (number_points+1)*
2583  sizeof(*primitive_info));
2584  (void) memset(&mvg_info,0,sizeof(mvg_info));
2585  mvg_info.primitive_info=(&primitive_info);
2586  mvg_info.extent=(&number_points);
2587  mvg_info.exception=(&image->exception);
2588  graphic_context[n]=CloneDrawInfo((ImageInfo *) NULL,draw_info);
2589  graphic_context[n]->viewbox=image->page;
2590  if ((image->page.width == 0) || (image->page.height == 0))
2591  {
2592  graphic_context[n]->viewbox.width=image->columns;
2593  graphic_context[n]->viewbox.height=image->rows;
2594  }
2595  token=AcquireString(primitive);
2596  extent=strlen(token)+MaxTextExtent;
2597  cursor=0.0;
2598  defsDepth=0;
2599  symbolDepth=0;
2600  macros=GetMVGMacros(primitive);
2601  status=QueryColorDatabase("#000000",&start_color,&image->exception);
2602  for (q=primitive; *q != '\0'; )
2603  {
2604  /*
2605  Interpret graphic primitive.
2606  */
2607  if (GetNextToken(q,&q,MaxTextExtent,keyword) < 1)
2608  break;
2609  if (*keyword == '\0')
2610  break;
2611  if (*keyword == '#')
2612  {
2613  /*
2614  Comment.
2615  */
2616  while ((*q != '\n') && (*q != '\0'))
2617  q++;
2618  continue;
2619  }
2620  p=q-strlen(keyword)-1;
2621  primitive_type=UndefinedPrimitive;
2622  current=graphic_context[n]->affine;
2623  GetAffineMatrix(&affine);
2624  *token='\0';
2625  switch (*keyword)
2626  {
2627  case ';':
2628  break;
2629  case 'a':
2630  case 'A':
2631  {
2632  if (LocaleCompare("affine",keyword) == 0)
2633  {
2634  (void) GetNextToken(q,&q,extent,token);
2635  affine.sx=GetDrawValue(token,&next_token);
2636  if (token == next_token)
2637  ThrowPointExpectedException(image,token);
2638  (void) GetNextToken(q,&q,extent,token);
2639  if (*token == ',')
2640  (void) GetNextToken(q,&q,extent,token);
2641  affine.rx=GetDrawValue(token,&next_token);
2642  if (token == next_token)
2643  ThrowPointExpectedException(image,token);
2644  (void) GetNextToken(q,&q,extent,token);
2645  if (*token == ',')
2646  (void) GetNextToken(q,&q,extent,token);
2647  affine.ry=GetDrawValue(token,&next_token);
2648  if (token == next_token)
2649  ThrowPointExpectedException(image,token);
2650  (void) GetNextToken(q,&q,extent,token);
2651  if (*token == ',')
2652  (void) GetNextToken(q,&q,extent,token);
2653  affine.sy=GetDrawValue(token,&next_token);
2654  if (token == next_token)
2655  ThrowPointExpectedException(image,token);
2656  (void) GetNextToken(q,&q,extent,token);
2657  if (*token == ',')
2658  (void) GetNextToken(q,&q,extent,token);
2659  affine.tx=GetDrawValue(token,&next_token);
2660  if (token == next_token)
2661  ThrowPointExpectedException(image,token);
2662  (void) GetNextToken(q,&q,extent,token);
2663  if (*token == ',')
2664  (void) GetNextToken(q,&q,extent,token);
2665  affine.ty=GetDrawValue(token,&next_token);
2666  if (token == next_token)
2667  ThrowPointExpectedException(image,token);
2668  break;
2669  }
2670  if (LocaleCompare("arc",keyword) == 0)
2671  {
2672  primitive_type=ArcPrimitive;
2673  break;
2674  }
2675  status=MagickFalse;
2676  break;
2677  }
2678  case 'b':
2679  case 'B':
2680  {
2681  if (LocaleCompare("bezier",keyword) == 0)
2682  {
2683  primitive_type=BezierPrimitive;
2684  break;
2685  }
2686  if (LocaleCompare("border-color",keyword) == 0)
2687  {
2688  (void) GetNextToken(q,&q,extent,token);
2689  status&=QueryColorDatabase(token,&graphic_context[n]->border_color,
2690  &image->exception);
2691  break;
2692  }
2693  status=MagickFalse;
2694  break;
2695  }
2696  case 'c':
2697  case 'C':
2698  {
2699  if (LocaleCompare("class",keyword) == 0)
2700  {
2701  const char
2702  *mvg_class;
2703 
2704  (void) GetNextToken(q,&q,extent,token);
2705  if ((*token == '\0') || (*token == ';'))
2706  {
2707  status=MagickFalse;
2708  break;
2709  }
2710  /*
2711  Identify recursion.
2712  */
2713  for (i=0; i < n; i++)
2714  if (LocaleCompare(token,graphic_context[i]->id) == 0)
2715  break;
2716  if (i < n)
2717  break;
2718  mvg_class=(const char *) GetValueFromSplayTree(macros,token);
2719  if ((graphic_context[n]->render != MagickFalse) &&
2720  (mvg_class != (const char *) NULL) && (p > primitive))
2721  {
2722  char
2723  *elements;
2724 
2725  ssize_t
2726  offset;
2727 
2728  /*
2729  Inject class elements in stream.
2730  */
2731  offset=(ssize_t) (p-primitive);
2732  elements=AcquireString(primitive);
2733  elements[offset]='\0';
2734  (void) ConcatenateString(&elements,mvg_class);
2735  (void) ConcatenateString(&elements,"\n");
2736  (void) ConcatenateString(&elements,q);
2737  primitive=DestroyString(primitive);
2738  primitive=elements;
2739  q=primitive+offset;
2740  }
2741  break;
2742  }
2743  if (LocaleCompare("clip-path",keyword) == 0)
2744  {
2745  const char
2746  *clip_path;
2747 
2748  /*
2749  Take a node from within the MVG document, and duplicate it here.
2750  */
2751  (void) GetNextToken(q,&q,extent,token);
2752  if (*token == '\0')
2753  {
2754  status=MagickFalse;
2755  break;
2756  }
2757  (void) CloneString(&graphic_context[n]->clip_mask,token);
2758  clip_path=(const char *) GetValueFromSplayTree(macros,token);
2759  if (clip_path != (const char *) NULL)
2760  {
2761  if (graphic_context[n]->clipping_mask != (Image *) NULL)
2762  graphic_context[n]->clipping_mask=
2763  DestroyImage(graphic_context[n]->clipping_mask);
2764  graphic_context[n]->clipping_mask=DrawClippingMask(image,
2765  graphic_context[n],token,clip_path,&image->exception);
2766  if (graphic_context[n]->compliance != SVGCompliance)
2767  {
2768  const char
2769  *clip_path;
2770 
2771  clip_path=(const char *) GetValueFromSplayTree(macros,
2772  graphic_context[n]->clip_mask);
2773  if (clip_path != (const char *) NULL)
2774  (void) SetImageArtifact(image,
2775  graphic_context[n]->clip_mask,clip_path);
2776  status&=DrawClipPath(image,graphic_context[n],
2777  graphic_context[n]->clip_mask);
2778  }
2779  }
2780  break;
2781  }
2782  if (LocaleCompare("clip-rule",keyword) == 0)
2783  {
2784  ssize_t
2785  fill_rule;
2786 
2787  (void) GetNextToken(q,&q,extent,token);
2788  fill_rule=ParseCommandOption(MagickFillRuleOptions,MagickFalse,
2789  token);
2790  if (fill_rule == -1)
2791  {
2792  status=MagickFalse;
2793  break;
2794  }
2795  graphic_context[n]->fill_rule=(FillRule) fill_rule;
2796  break;
2797  }
2798  if (LocaleCompare("clip-units",keyword) == 0)
2799  {
2800  ssize_t
2801  clip_units;
2802 
2803  (void) GetNextToken(q,&q,extent,token);
2804  clip_units=ParseCommandOption(MagickClipPathOptions,MagickFalse,
2805  token);
2806  if (clip_units == -1)
2807  {
2808  status=MagickFalse;
2809  break;
2810  }
2811  graphic_context[n]->clip_units=(ClipPathUnits) clip_units;
2812  if (clip_units == ObjectBoundingBox)
2813  {
2814  GetAffineMatrix(&current);
2815  affine.sx=draw_info->bounds.x2;
2816  affine.sy=draw_info->bounds.y2;
2817  affine.tx=draw_info->bounds.x1;
2818  affine.ty=draw_info->bounds.y1;
2819  break;
2820  }
2821  break;
2822  }
2823  if (LocaleCompare("circle",keyword) == 0)
2824  {
2825  primitive_type=CirclePrimitive;
2826  break;
2827  }
2828  if (LocaleCompare("color",keyword) == 0)
2829  {
2830  primitive_type=ColorPrimitive;
2831  break;
2832  }
2833  if (LocaleCompare("compliance",keyword) == 0)
2834  {
2835  /*
2836  MVG compliance associates a clipping mask with an image; SVG
2837  compliance associates a clipping mask with a graphics context.
2838  */
2839  (void) GetNextToken(q,&q,extent,token);
2840  graphic_context[n]->compliance=(ComplianceType) ParseCommandOption(
2841  MagickComplianceOptions,MagickFalse,token);
2842  break;
2843  }
2844  if (LocaleCompare("currentColor",keyword) == 0)
2845  {
2846  (void) GetNextToken(q,&q,extent,token);
2847  break;
2848  }
2849  status=MagickFalse;
2850  break;
2851  }
2852  case 'd':
2853  case 'D':
2854  {
2855  if (LocaleCompare("decorate",keyword) == 0)
2856  {
2857  ssize_t
2858  decorate;
2859 
2860  (void) GetNextToken(q,&q,extent,token);
2861  decorate=ParseCommandOption(MagickDecorateOptions,MagickFalse,
2862  token);
2863  if (decorate == -1)
2864  {
2865  status=MagickFalse;
2866  break;
2867  }
2868  graphic_context[n]->decorate=(DecorationType) decorate;
2869  break;
2870  }
2871  if (LocaleCompare("density",keyword) == 0)
2872  {
2873  (void) GetNextToken(q,&q,extent,token);
2874  (void) CloneString(&graphic_context[n]->density,token);
2875  break;
2876  }
2877  if (LocaleCompare("direction",keyword) == 0)
2878  {
2879  ssize_t
2880  direction;
2881 
2882  (void) GetNextToken(q,&q,extent,token);
2883  direction=ParseCommandOption(MagickDirectionOptions,MagickFalse,
2884  token);
2885  if (direction == -1)
2886  status=MagickFalse;
2887  else
2888  graphic_context[n]->direction=(DirectionType) direction;
2889  break;
2890  }
2891  status=MagickFalse;
2892  break;
2893  }
2894  case 'e':
2895  case 'E':
2896  {
2897  if (LocaleCompare("ellipse",keyword) == 0)
2898  {
2899  primitive_type=EllipsePrimitive;
2900  break;
2901  }
2902  if (LocaleCompare("encoding",keyword) == 0)
2903  {
2904  (void) GetNextToken(q,&q,extent,token);
2905  (void) CloneString(&graphic_context[n]->encoding,token);
2906  break;
2907  }
2908  status=MagickFalse;
2909  break;
2910  }
2911  case 'f':
2912  case 'F':
2913  {
2914  if (LocaleCompare("fill",keyword) == 0)
2915  {
2916  const char
2917  *mvg_class;
2918 
2919  (void) GetNextToken(q,&q,extent,token);
2920  if (graphic_context[n]->clip_path != MagickFalse)
2921  break;
2922  mvg_class=(const char *) GetValueFromSplayTree(macros,token);
2923  if (mvg_class != (const char *) NULL)
2924  {
2925  (void) DrawPatternPath(image,draw_info,mvg_class,
2926  &graphic_context[n]->fill_pattern);
2927  break;
2928  }
2929  (void) FormatLocaleString(pattern,MaxTextExtent,"%s",token);
2930  if (GetImageArtifact(image,pattern) != (const char *) NULL)
2931  {
2932  (void) DrawPatternPath(image,draw_info,token,
2933  &graphic_context[n]->fill_pattern);
2934  break;
2935  }
2936  status&=QueryColorDatabase(token,&graphic_context[n]->fill,
2937  &image->exception);
2938  if (graphic_context[n]->fill_opacity != (double) OpaqueOpacity)
2939  graphic_context[n]->fill.opacity=ClampToQuantum(
2940  graphic_context[n]->fill_opacity);
2941  break;
2942  }
2943  if (LocaleCompare("fill-opacity",keyword) == 0)
2944  {
2945  double
2946  opacity;
2947 
2948  (void) GetNextToken(q,&q,extent,token);
2949  if (graphic_context[n]->clip_path != MagickFalse)
2950  break;
2951  factor=strchr(token,'%') != (char *) NULL ? 0.01 : 1.0;
2952  opacity=MagickMin(MagickMax(factor*
2953  GetDrawValue(token,&next_token),0.0),1.0);
2954  if (token == next_token)
2955  ThrowPointExpectedException(image,token);
2956  if (graphic_context[n]->compliance == SVGCompliance)
2957  graphic_context[n]->fill_opacity*=(1.0-opacity);
2958  else
2959  graphic_context[n]->fill_opacity=((MagickRealType) QuantumRange-
2960  graphic_context[n]->fill_opacity)*(1.0-opacity);
2961  if (graphic_context[n]->fill.opacity != TransparentOpacity)
2962  graphic_context[n]->fill.opacity=(Quantum)
2963  graphic_context[n]->fill_opacity;
2964  else
2965  graphic_context[n]->fill.opacity=ClampToQuantum((MagickRealType)
2966  QuantumRange*(1.0-opacity));
2967  break;
2968  }
2969  if (LocaleCompare("fill-rule",keyword) == 0)
2970  {
2971  ssize_t
2972  fill_rule;
2973 
2974  (void) GetNextToken(q,&q,extent,token);
2975  fill_rule=ParseCommandOption(MagickFillRuleOptions,MagickFalse,
2976  token);
2977  if (fill_rule == -1)
2978  {
2979  status=MagickFalse;
2980  break;
2981  }
2982  graphic_context[n]->fill_rule=(FillRule) fill_rule;
2983  break;
2984  }
2985  if (LocaleCompare("font",keyword) == 0)
2986  {
2987  (void) GetNextToken(q,&q,extent,token);
2988  (void) CloneString(&graphic_context[n]->font,token);
2989  if (LocaleCompare("none",token) == 0)
2990  graphic_context[n]->font=(char *) RelinquishMagickMemory(
2991  graphic_context[n]->font);
2992  break;
2993  }
2994  if (LocaleCompare("font-family",keyword) == 0)
2995  {
2996  (void) GetNextToken(q,&q,extent,token);
2997  (void) CloneString(&graphic_context[n]->family,token);
2998  break;
2999  }
3000  if (LocaleCompare("font-size",keyword) == 0)
3001  {
3002  (void) GetNextToken(q,&q,extent,token);
3003  graphic_context[n]->pointsize=GetDrawValue(token,&next_token);
3004  if (token == next_token)
3005  ThrowPointExpectedException(image,token);
3006  break;
3007  }
3008  if (LocaleCompare("font-stretch",keyword) == 0)
3009  {
3010  ssize_t
3011  stretch;
3012 
3013  (void) GetNextToken(q,&q,extent,token);
3014  stretch=ParseCommandOption(MagickStretchOptions,MagickFalse,token);
3015  if (stretch == -1)
3016  {
3017  status=MagickFalse;
3018  break;
3019  }
3020  graphic_context[n]->stretch=(StretchType) stretch;
3021  break;
3022  }
3023  if (LocaleCompare("font-style",keyword) == 0)
3024  {
3025  ssize_t
3026  style;
3027 
3028  (void) GetNextToken(q,&q,extent,token);
3029  style=ParseCommandOption(MagickStyleOptions,MagickFalse,token);
3030  if (style == -1)
3031  {
3032  status=MagickFalse;
3033  break;
3034  }
3035  graphic_context[n]->style=(StyleType) style;
3036  break;
3037  }
3038  if (LocaleCompare("font-weight",keyword) == 0)
3039  {
3040  ssize_t
3041  weight;
3042 
3043  (void) GetNextToken(q,&q,extent,token);
3044  weight=ParseCommandOption(MagickWeightOptions,MagickFalse,token);
3045  if (weight == -1)
3046  weight=(ssize_t) StringToUnsignedLong(token);
3047  graphic_context[n]->weight=(size_t) weight;
3048  break;
3049  }
3050  status=MagickFalse;
3051  break;
3052  }
3053  case 'g':
3054  case 'G':
3055  {
3056  if (LocaleCompare("gradient-units",keyword) == 0)
3057  {
3058  (void) GetNextToken(q,&q,extent,token);
3059  break;
3060  }
3061  if (LocaleCompare("gravity",keyword) == 0)
3062  {
3063  ssize_t
3064  gravity;
3065 
3066  (void) GetNextToken(q,&q,extent,token);
3067  gravity=ParseCommandOption(MagickGravityOptions,MagickFalse,token);
3068  if (gravity == -1)
3069  {
3070  status=MagickFalse;
3071  break;
3072  }
3073  graphic_context[n]->gravity=(GravityType) gravity;
3074  break;
3075  }
3076  status=MagickFalse;
3077  break;
3078  }
3079  case 'i':
3080  case 'I':
3081  {
3082  if (LocaleCompare("image",keyword) == 0)
3083  {
3084  ssize_t
3085  compose;
3086 
3087  primitive_type=ImagePrimitive;
3088  (void) GetNextToken(q,&q,extent,token);
3089  compose=ParseCommandOption(MagickComposeOptions,MagickFalse,token);
3090  if (compose == -1)
3091  {
3092  status=MagickFalse;
3093  break;
3094  }
3095  graphic_context[n]->compose=(CompositeOperator) compose;
3096  break;
3097  }
3098  if (LocaleCompare("interline-spacing",keyword) == 0)
3099  {
3100  (void) GetNextToken(q,&q,extent,token);
3101  graphic_context[n]->interline_spacing=GetDrawValue(token,
3102  &next_token);
3103  if (token == next_token)
3104  ThrowPointExpectedException(image,token);
3105  break;
3106  }
3107  if (LocaleCompare("interword-spacing",keyword) == 0)
3108  {
3109  (void) GetNextToken(q,&q,extent,token);
3110  graphic_context[n]->interword_spacing=GetDrawValue(token,
3111  &next_token);
3112  if (token == next_token)
3113  ThrowPointExpectedException(image,token);
3114  break;
3115  }
3116  status=MagickFalse;
3117  break;
3118  }
3119  case 'k':
3120  case 'K':
3121  {
3122  if (LocaleCompare("kerning",keyword) == 0)
3123  {
3124  (void) GetNextToken(q,&q,extent,token);
3125  graphic_context[n]->kerning=GetDrawValue(token,&next_token);
3126  if (token == next_token)
3127  ThrowPointExpectedException(image,token);
3128  break;
3129  }
3130  status=MagickFalse;
3131  break;
3132  }
3133  case 'l':
3134  case 'L':
3135  {
3136  if (LocaleCompare("letter-spacing",keyword) == 0)
3137  {
3138  (void) GetNextToken(q,&q,extent,token);
3139  if (IsPoint(token) == MagickFalse)
3140  break;
3141  clone_info=CloneDrawInfo((ImageInfo *) NULL,graphic_context[n]);
3142  clone_info->text=AcquireString(" ");
3143  status&=GetTypeMetrics(image,clone_info,&metrics);
3144  graphic_context[n]->kerning=metrics.width*
3145  GetDrawValue(token,&next_token);
3146  clone_info=DestroyDrawInfo(clone_info);
3147  if (token == next_token)
3148  ThrowPointExpectedException(image,token);
3149  break;
3150  }
3151  if (LocaleCompare("line",keyword) == 0)
3152  {
3153  primitive_type=LinePrimitive;
3154  break;
3155  }
3156  status=MagickFalse;
3157  break;
3158  }
3159  case 'm':
3160  case 'M':
3161  {
3162  if (LocaleCompare("mask",keyword) == 0)
3163  {
3164  const char
3165  *mask_path;
3166 
3167  /*
3168  Take a node from within the MVG document, and duplicate it here.
3169  */
3170  (void) GetNextToken(q,&q,extent,token);
3171  mask_path=(const char *) GetValueFromSplayTree(macros,token);
3172  if (mask_path != (const char *) NULL)
3173  {
3174  if (graphic_context[n]->composite_mask != (Image *) NULL)
3175  graphic_context[n]->composite_mask=
3176  DestroyImage(graphic_context[n]->composite_mask);
3177  graphic_context[n]->composite_mask=DrawCompositeMask(image,
3178  graphic_context[n],token,mask_path,&image->exception);
3179  if (graphic_context[n]->compliance != SVGCompliance)
3180  status=SetImageMask(image,graphic_context[n]->composite_mask);
3181  }
3182  break;
3183  }
3184  if (LocaleCompare("matte",keyword) == 0)
3185  {
3186  primitive_type=MattePrimitive;
3187  break;
3188  }
3189  status=MagickFalse;
3190  break;
3191  }
3192  case 'o':
3193  case 'O':
3194  {
3195  if (LocaleCompare("offset",keyword) == 0)
3196  {
3197  (void) GetNextToken(q,&q,extent,token);
3198  break;
3199  }
3200  if (LocaleCompare("opacity",keyword) == 0)
3201  {
3202  double
3203  opacity;
3204 
3205  (void) GetNextToken(q,&q,extent,token);
3206  if (graphic_context[n]->clip_path != MagickFalse)
3207  break;
3208  factor=strchr(token,'%') != (char *) NULL ? 0.01 : 1.0;
3209  opacity=MagickMin(MagickMax(factor*
3210  GetDrawValue(token,&next_token),0.0),1.0);
3211  if (token == next_token)
3212  ThrowPointExpectedException(image,token);
3213  if (graphic_context[n]->compliance == SVGCompliance)
3214  {
3215  graphic_context[n]->fill_opacity*=(1.0-opacity);
3216  graphic_context[n]->stroke_opacity*=(1.0-opacity);
3217  }
3218  else
3219  {
3220  graphic_context[n]->fill_opacity=((MagickRealType) QuantumRange-
3221  graphic_context[n]->fill_opacity)*(1.0-opacity);
3222  graphic_context[n]->stroke_opacity=((MagickRealType)
3223  QuantumRange-graphic_context[n]->stroke_opacity)*
3224  (1.0-opacity);
3225  }
3226  break;
3227  }
3228  status=MagickFalse;
3229  break;
3230  }
3231  case 'p':
3232  case 'P':
3233  {
3234  if (LocaleCompare("path",keyword) == 0)
3235  {
3236  primitive_type=PathPrimitive;
3237  break;
3238  }
3239  if (LocaleCompare("point",keyword) == 0)
3240  {
3241  primitive_type=PointPrimitive;
3242  break;
3243  }
3244  if (LocaleCompare("polyline",keyword) == 0)
3245  {
3246  primitive_type=PolylinePrimitive;
3247  break;
3248  }
3249  if (LocaleCompare("polygon",keyword) == 0)
3250  {
3251  primitive_type=PolygonPrimitive;
3252  break;
3253  }
3254  if (LocaleCompare("pop",keyword) == 0)
3255  {
3256  if (GetNextToken(q,&q,extent,token) < 1)
3257  break;
3258  if (LocaleCompare("class",token) == 0)
3259  break;
3260  if (LocaleCompare("clip-path",token) == 0)
3261  break;
3262  if (LocaleCompare("defs",token) == 0)
3263  {
3264  defsDepth--;
3265  graphic_context[n]->render=defsDepth > 0 ? MagickFalse :
3266  MagickTrue;
3267  break;
3268  }
3269  if (LocaleCompare("gradient",token) == 0)
3270  break;
3271  if (LocaleCompare("graphic-context",token) == 0)
3272  {
3273  if (n <= 0)
3274  {
3275  (void) ThrowMagickException(&image->exception,
3276  GetMagickModule(),DrawError,
3277  "UnbalancedGraphicContextPushPop","`%s'",token);
3278  status=MagickFalse;
3279  n=0;
3280  break;
3281  }
3282  if ((graphic_context[n]->clip_mask != (char *) NULL) &&
3283  (graphic_context[n]->compliance != SVGCompliance))
3284  if (LocaleCompare(graphic_context[n]->clip_mask,
3285  graphic_context[n-1]->clip_mask) != 0)
3286  status=SetImageClipMask(image,(Image *) NULL);
3287  graphic_context[n]=DestroyDrawInfo(graphic_context[n]);
3288  n--;
3289  break;
3290  }
3291  if (LocaleCompare("mask",token) == 0)
3292  break;
3293  if (LocaleCompare("pattern",token) == 0)
3294  break;
3295  if (LocaleCompare("symbol",token) == 0)
3296  {
3297  symbolDepth--;
3298  graphic_context[n]->render=symbolDepth > 0 ? MagickFalse :
3299  MagickTrue;
3300  break;
3301  }
3302  status=MagickFalse;
3303  break;
3304  }
3305  if (LocaleCompare("push",keyword) == 0)
3306  {
3307  if (GetNextToken(q,&q,extent,token) < 1)
3308  break;
3309  if (LocaleCompare("class",token) == 0)
3310  {
3311  /*
3312  Class context.
3313  */
3314  for (p=q; *q != '\0'; )
3315  {
3316  if (GetNextToken(q,&q,extent,token) < 1)
3317  break;
3318  if (LocaleCompare(token,"pop") != 0)
3319  continue;
3320  (void) GetNextToken(q,(const char **) NULL,extent,token);
3321  if (LocaleCompare(token,"class") != 0)
3322  continue;
3323  break;
3324  }
3325  (void) GetNextToken(q,&q,extent,token);
3326  break;
3327  }
3328  if (LocaleCompare("clip-path",token) == 0)
3329  {
3330  (void) GetNextToken(q,&q,extent,token);
3331  for (p=q; *q != '\0'; )
3332  {
3333  if (GetNextToken(q,&q,extent,token) < 1)
3334  break;
3335  if (LocaleCompare(token,"pop") != 0)
3336  continue;
3337  (void) GetNextToken(q,(const char **) NULL,extent,token);
3338  if (LocaleCompare(token,"clip-path") != 0)
3339  continue;
3340  break;
3341  }
3342  if ((q == (char *) NULL) || (p == (char *) NULL) || ((q-4) < p))
3343  {
3344  status=MagickFalse;
3345  break;
3346  }
3347  (void) GetNextToken(q,&q,extent,token);
3348  break;
3349  }
3350  if (LocaleCompare("defs",token) == 0)
3351  {
3352  defsDepth++;
3353  graphic_context[n]->render=defsDepth > 0 ? MagickFalse :
3354  MagickTrue;
3355  break;
3356  }
3357  if (LocaleCompare("gradient",token) == 0)
3358  {
3359  char
3360  key[2*MaxTextExtent],
3361  name[MaxTextExtent],
3362  type[MaxTextExtent];
3363 
3364  SegmentInfo
3365  segment;
3366 
3367  (void) GetNextToken(q,&q,extent,token);
3368  (void) CopyMagickString(name,token,MaxTextExtent);
3369  (void) GetNextToken(q,&q,extent,token);
3370  (void) CopyMagickString(type,token,MaxTextExtent);
3371  (void) GetNextToken(q,&q,extent,token);
3372  segment.x1=GetDrawValue(token,&next_token);
3373  if (token == next_token)
3374  ThrowPointExpectedException(image,token);
3375  (void) GetNextToken(q,&q,extent,token);
3376  if (*token == ',')
3377  (void) GetNextToken(q,&q,extent,token);
3378  segment.y1=GetDrawValue(token,&next_token);
3379  if (token == next_token)
3380  ThrowPointExpectedException(image,token);
3381  (void) GetNextToken(q,&q,extent,token);
3382  if (*token == ',')
3383  (void) GetNextToken(q,&q,extent,token);
3384  segment.x2=GetDrawValue(token,&next_token);
3385  if (token == next_token)
3386  ThrowPointExpectedException(image,token);
3387  (void) GetNextToken(q,&q,extent,token);
3388  if (*token == ',')
3389  (void) GetNextToken(q,&q,extent,token);
3390  segment.y2=GetDrawValue(token,&next_token);
3391  if (token == next_token)
3392  ThrowPointExpectedException(image,token);
3393  if (LocaleCompare(type,"radial") == 0)
3394  {
3395  (void) GetNextToken(q,&q,extent,token);
3396  if (*token == ',')
3397  (void) GetNextToken(q,&q,extent,token);
3398  }
3399  for (p=q; *q != '\0'; )
3400  {
3401  if (GetNextToken(q,&q,extent,token) < 1)
3402  break;
3403  if (LocaleCompare(token,"pop") != 0)
3404  continue;
3405  (void) GetNextToken(q,(const char **) NULL,extent,token);
3406  if (LocaleCompare(token,"gradient") != 0)
3407  continue;
3408  break;
3409  }
3410  if ((q == (char *) NULL) || (*q == '\0') ||
3411  (p == (char *) NULL) || ((q-4) < p))
3412  {
3413  status=MagickFalse;
3414  break;
3415  }
3416  (void) CopyMagickString(token,p,(size_t) (q-p-4+1));
3417  bounds.x1=graphic_context[n]->affine.sx*segment.x1+
3418  graphic_context[n]->affine.ry*segment.y1+
3419  graphic_context[n]->affine.tx;
3420  bounds.y1=graphic_context[n]->affine.rx*segment.x1+
3421  graphic_context[n]->affine.sy*segment.y1+
3422  graphic_context[n]->affine.ty;
3423  bounds.x2=graphic_context[n]->affine.sx*segment.x2+
3424  graphic_context[n]->affine.ry*segment.y2+
3425  graphic_context[n]->affine.tx;
3426  bounds.y2=graphic_context[n]->affine.rx*segment.x2+
3427  graphic_context[n]->affine.sy*segment.y2+
3428  graphic_context[n]->affine.ty;
3429  (void) FormatLocaleString(key,MaxTextExtent,"%s",name);
3430  (void) SetImageArtifact(image,key,token);
3431  (void) FormatLocaleString(key,MaxTextExtent,"%s-type",name);
3432  (void) SetImageArtifact(image,key,type);
3433  (void) FormatLocaleString(key,MaxTextExtent,"%s-geometry",name);
3434  (void) FormatLocaleString(geometry,MaxTextExtent,
3435  "%gx%g%+.15g%+.15g",
3436  MagickMax(fabs(bounds.x2-bounds.x1+1.0),1.0),
3437  MagickMax(fabs(bounds.y2-bounds.y1+1.0),1.0),
3438  bounds.x1,bounds.y1);
3439  (void) SetImageArtifact(image,key,geometry);
3440  (void) GetNextToken(q,&q,extent,token);
3441  break;
3442  }
3443  if (LocaleCompare("graphic-context",token) == 0)
3444  {
3445  n++;
3446  graphic_context=(DrawInfo **) ResizeQuantumMemory(
3447  graphic_context,(size_t) (n+1),sizeof(*graphic_context));
3448  if (graphic_context == (DrawInfo **) NULL)
3449  {
3450  (void) ThrowMagickException(&image->exception,
3451  GetMagickModule(),ResourceLimitError,
3452  "MemoryAllocationFailed","`%s'",image->filename);
3453  break;
3454  }
3455  graphic_context[n]=CloneDrawInfo((ImageInfo *) NULL,
3456  graphic_context[n-1]);
3457  if (*q == '"')
3458  {
3459  (void) GetNextToken(q,&q,extent,token);
3460  (void) CloneString(&graphic_context[n]->id,token);
3461  }
3462  break;
3463  }
3464  if (LocaleCompare("mask",token) == 0)
3465  {
3466  (void) GetNextToken(q,&q,extent,token);
3467  break;
3468  }
3469  if (LocaleCompare("pattern",token) == 0)
3470  {
3472  bounds;
3473 
3474  (void) GetNextToken(q,&q,extent,token);
3475  (void) CopyMagickString(name,token,MaxTextExtent);
3476  (void) GetNextToken(q,&q,extent,token);
3477  bounds.x=CastDoubleToLong(ceil(GetDrawValue(token,
3478  &next_token)-0.5));
3479  if (token == next_token)
3480  ThrowPointExpectedException(image,token);
3481  (void) GetNextToken(q,&q,extent,token);
3482  if (*token == ',')
3483  (void) GetNextToken(q,&q,extent,token);
3484  bounds.y=CastDoubleToLong(ceil(GetDrawValue(token,
3485  &next_token)-0.5));
3486  if (token == next_token)
3487  ThrowPointExpectedException(image,token);
3488  (void) GetNextToken(q,&q,extent,token);
3489  if (*token == ',')
3490  (void) GetNextToken(q,&q,extent,token);
3491  bounds.width=CastDoubleToUnsigned(GetDrawValue(token,
3492  &next_token)+0.5);
3493  if (token == next_token)
3494  ThrowPointExpectedException(image,token);
3495  (void) GetNextToken(q,&q,extent,token);
3496  if (*token == ',')
3497  (void) GetNextToken(q,&q,extent,token);
3498  bounds.height=CastDoubleToUnsigned(GetDrawValue(token,
3499  &next_token)+0.5);
3500  if (token == next_token)
3501  ThrowPointExpectedException(image,token);
3502  for (p=q; *q != '\0'; )
3503  {
3504  if (GetNextToken(q,&q,extent,token) < 1)
3505  break;
3506  if (LocaleCompare(token,"pop") != 0)
3507  continue;
3508  (void) GetNextToken(q,(const char **) NULL,extent,token);
3509  if (LocaleCompare(token,"pattern") != 0)
3510  continue;
3511  break;
3512  }
3513  if ((q == (char *) NULL) || (p == (char *) NULL) || ((q-4) < p))
3514  {
3515  status=MagickFalse;
3516  break;
3517  }
3518  (void) CopyMagickString(token,p,(size_t) (q-p-4+1));
3519  (void) FormatLocaleString(key,MaxTextExtent,"%s",name);
3520  (void) SetImageArtifact(image,key,token);
3521  (void) FormatLocaleString(key,MaxTextExtent,"%s-geometry",name);
3522  (void) FormatLocaleString(geometry,MaxTextExtent,
3523  "%.20gx%.20g%+.20g%+.20g",(double) bounds.width,(double)
3524  bounds.height,(double) bounds.x,(double) bounds.y);
3525  (void) SetImageArtifact(image,key,geometry);
3526  (void) GetNextToken(q,&q,extent,token);
3527  break;
3528  }
3529  if (LocaleCompare("symbol",token) == 0)
3530  {
3531  symbolDepth++;
3532  graphic_context[n]->render=symbolDepth > 0 ? MagickFalse :
3533  MagickTrue;
3534  break;
3535  }
3536  status=MagickFalse;
3537  break;
3538  }
3539  status=MagickFalse;
3540  break;
3541  }
3542  case 'r':
3543  case 'R':
3544  {
3545  if (LocaleCompare("rectangle",keyword) == 0)
3546  {
3547  primitive_type=RectanglePrimitive;
3548  break;
3549  }
3550  if (LocaleCompare("rotate",keyword) == 0)
3551  {
3552  (void) GetNextToken(q,&q,extent,token);
3553  angle=GetDrawValue(token,&next_token);
3554  if (token == next_token)
3555  ThrowPointExpectedException(image,token);
3556  affine.sx=cos(DegreesToRadians(fmod((double) angle,360.0)));
3557  affine.rx=sin(DegreesToRadians(fmod((double) angle,360.0)));
3558  affine.ry=(-sin(DegreesToRadians(fmod((double) angle,360.0))));
3559  affine.sy=cos(DegreesToRadians(fmod((double) angle,360.0)));
3560  break;
3561  }
3562  if (LocaleCompare("roundRectangle",keyword) == 0)
3563  {
3564  primitive_type=RoundRectanglePrimitive;
3565  break;
3566  }
3567  status=MagickFalse;
3568  break;
3569  }
3570  case 's':
3571  case 'S':
3572  {
3573  if (LocaleCompare("scale",keyword) == 0)
3574  {
3575  (void) GetNextToken(q,&q,extent,token);
3576  affine.sx=GetDrawValue(token,&next_token);
3577  if (token == next_token)
3578  ThrowPointExpectedException(image,token);
3579  (void) GetNextToken(q,&q,extent,token);
3580  if (*token == ',')
3581  (void) GetNextToken(q,&q,extent,token);
3582  affine.sy=GetDrawValue(token,&next_token);
3583  if (token == next_token)
3584  ThrowPointExpectedException(image,token);
3585  break;
3586  }
3587  if (LocaleCompare("skewX",keyword) == 0)
3588  {
3589  (void) GetNextToken(q,&q,extent,token);
3590  angle=GetDrawValue(token,&next_token);
3591  if (token == next_token)
3592  ThrowPointExpectedException(image,token);
3593  affine.ry=sin(DegreesToRadians(angle));
3594  break;
3595  }
3596  if (LocaleCompare("skewY",keyword) == 0)
3597  {
3598  (void) GetNextToken(q,&q,extent,token);
3599  angle=GetDrawValue(token,&next_token);
3600  if (token == next_token)
3601  ThrowPointExpectedException(image,token);
3602  affine.rx=(-tan(DegreesToRadians(angle)/2.0));
3603  break;
3604  }
3605  if (LocaleCompare("stop-color",keyword) == 0)
3606  {
3607  GradientType
3608  type;
3609 
3610  PixelPacket
3611  stop_color;
3612 
3613  (void) GetNextToken(q,&q,extent,token);
3614  status&=QueryColorDatabase(token,&stop_color,&image->exception);
3615  type=LinearGradient;
3616  if (draw_info->gradient.type == RadialGradient)
3617  type=RadialGradient;
3618  (void) GradientImage(image,type,PadSpread,&start_color,&stop_color);
3619  start_color=stop_color;
3620  (void) GetNextToken(q,&q,extent,token);
3621  break;
3622  }
3623  if (LocaleCompare("stroke",keyword) == 0)
3624  {
3625  const char
3626  *mvg_class;
3627 
3628  (void) GetNextToken(q,&q,extent,token);
3629  if (graphic_context[n]->clip_path != MagickFalse)
3630  break;
3631  mvg_class=(const char *) GetValueFromSplayTree(macros,token);
3632  if (mvg_class != (const char *) NULL)
3633  {
3634  (void) DrawPatternPath(image,draw_info,mvg_class,
3635  &graphic_context[n]->stroke_pattern);
3636  break;
3637  }
3638  (void) FormatLocaleString(pattern,MaxTextExtent,"%s",token);
3639  if (GetImageArtifact(image,pattern) != (const char *) NULL)
3640  {
3641  (void) DrawPatternPath(image,draw_info,token,
3642  &graphic_context[n]->stroke_pattern);
3643  break;
3644  }
3645  status&=QueryColorDatabase(token,&graphic_context[n]->stroke,
3646  &image->exception);
3647  if (graphic_context[n]->stroke_opacity != (MagickRealType) OpaqueOpacity)
3648  graphic_context[n]->stroke.opacity=ClampToQuantum(
3649  graphic_context[n]->stroke_opacity);
3650  break;
3651  }
3652  if (LocaleCompare("stroke-antialias",keyword) == 0)
3653  {
3654  (void) GetNextToken(q,&q,extent,token);
3655  graphic_context[n]->stroke_antialias=StringToLong(token) != 0 ?
3656  MagickTrue : MagickFalse;
3657  break;
3658  }
3659  if (LocaleCompare("stroke-dasharray",keyword) == 0)
3660  {
3661  if (graphic_context[n]->dash_pattern != (double *) NULL)
3662  graphic_context[n]->dash_pattern=(double *)
3663  RelinquishMagickMemory(graphic_context[n]->dash_pattern);
3664  if (IsPoint(q) != MagickFalse)
3665  {
3666  const char
3667  *p;
3668 
3669  p=q;
3670  (void) GetNextToken(p,&p,extent,token);
3671  if (*token == ',')
3672  (void) GetNextToken(p,&p,extent,token);
3673  for (x=0; IsPoint(token) != MagickFalse; x++)
3674  {
3675  (void) GetNextToken(p,&p,extent,token);
3676  if (*token == ',')
3677  (void) GetNextToken(p,&p,extent,token);
3678  }
3679  graphic_context[n]->dash_pattern=(double *)
3680  AcquireQuantumMemory((size_t) (2*x+2),
3681  sizeof(*graphic_context[n]->dash_pattern));
3682  if (graphic_context[n]->dash_pattern == (double *) NULL)
3683  {
3684  (void) ThrowMagickException(&image->exception,
3685  GetMagickModule(),ResourceLimitError,
3686  "MemoryAllocationFailed","`%s'",image->filename);
3687  status=MagickFalse;
3688  break;
3689  }
3690  (void) memset(graphic_context[n]->dash_pattern,0,(size_t)
3691  (2*x+2)*sizeof(*graphic_context[n]->dash_pattern));
3692  for (j=0; j < x; j++)
3693  {
3694  (void) GetNextToken(q,&q,extent,token);
3695  if (*token == ',')
3696  (void) GetNextToken(q,&q,extent,token);
3697  graphic_context[n]->dash_pattern[j]=GetDrawValue(token,
3698  &next_token);
3699  if (token == next_token)
3700  ThrowPointExpectedException(image,token);
3701  if (graphic_context[n]->dash_pattern[j] <= 0.0)
3702  status=MagickFalse;
3703  }
3704  if ((x & 0x01) != 0)
3705  for ( ; j < (2*x); j++)
3706  graphic_context[n]->dash_pattern[j]=
3707  graphic_context[n]->dash_pattern[j-x];
3708  graphic_context[n]->dash_pattern[j]=0.0;
3709  break;
3710  }
3711  (void) GetNextToken(q,&q,extent,token);
3712  break;
3713  }
3714  if (LocaleCompare("stroke-dashoffset",keyword) == 0)
3715  {
3716  (void) GetNextToken(q,&q,extent,token);
3717  graphic_context[n]->dash_offset=GetDrawValue(token,&next_token);
3718  if (token == next_token)
3719  ThrowPointExpectedException(image,token);
3720  break;
3721  }
3722  if (LocaleCompare("stroke-linecap",keyword) == 0)
3723  {
3724  ssize_t
3725  linecap;
3726 
3727  (void) GetNextToken(q,&q,extent,token);
3728  linecap=ParseCommandOption(MagickLineCapOptions,MagickFalse,token);
3729  if (linecap == -1)
3730  {
3731  status=MagickFalse;
3732  break;
3733  }
3734  graphic_context[n]->linecap=(LineCap) linecap;
3735  break;
3736  }
3737  if (LocaleCompare("stroke-linejoin",keyword) == 0)
3738  {
3739  ssize_t
3740  linejoin;
3741 
3742  (void) GetNextToken(q,&q,extent,token);
3743  linejoin=ParseCommandOption(MagickLineJoinOptions,MagickFalse,
3744  token);
3745  if (linejoin == -1)
3746  {
3747  status=MagickFalse;
3748  break;
3749  }
3750  graphic_context[n]->linejoin=(LineJoin) linejoin;
3751  break;
3752  }
3753  if (LocaleCompare("stroke-miterlimit",keyword) == 0)
3754  {
3755  (void) GetNextToken(q,&q,extent,token);
3756  graphic_context[n]->miterlimit=StringToUnsignedLong(token);
3757  break;
3758  }
3759  if (LocaleCompare("stroke-opacity",keyword) == 0)
3760  {
3761  double
3762  opacity;
3763 
3764  (void) GetNextToken(q,&q,extent,token);
3765  if (graphic_context[n]->clip_path != MagickFalse)
3766  break;
3767  factor=strchr(token,'%') != (char *) NULL ? 0.01 : 1.0;
3768  opacity=MagickMin(MagickMax(factor*
3769  GetDrawValue(token,&next_token),0.0),1.0);
3770  if (token == next_token)
3771  ThrowPointExpectedException(image,token);
3772  if (graphic_context[n]->compliance == SVGCompliance)
3773  graphic_context[n]->stroke_opacity*=(1.0-opacity);
3774  else
3775  graphic_context[n]->stroke_opacity=((MagickRealType) QuantumRange-
3776  graphic_context[n]->stroke_opacity)*(1.0-opacity);
3777  if (graphic_context[n]->stroke.opacity != TransparentOpacity)
3778  graphic_context[n]->stroke.opacity=(Quantum)
3779  graphic_context[n]->stroke_opacity;
3780  else
3781  graphic_context[n]->stroke.opacity=ClampToQuantum(
3782  (MagickRealType) QuantumRange*opacity);
3783  break;
3784  }
3785  if (LocaleCompare("stroke-width",keyword) == 0)
3786  {
3787  (void) GetNextToken(q,&q,extent,token);
3788  if (graphic_context[n]->clip_path != MagickFalse)
3789  break;
3790  graphic_context[n]->stroke_width=GetDrawValue(token,&next_token);
3791  if ((token == next_token) ||
3792  (graphic_context[n]->stroke_width < 0.0))
3793  ThrowPointExpectedException(image,token);
3794  break;
3795  }
3796  status=MagickFalse;
3797  break;
3798  }
3799  case 't':
3800  case 'T':
3801  {
3802  if (LocaleCompare("text",keyword) == 0)
3803  {
3804  primitive_type=TextPrimitive;
3805  cursor=0.0;
3806  break;
3807  }
3808  if (LocaleCompare("text-align",keyword) == 0)
3809  {
3810  ssize_t
3811  align;
3812 
3813  (void) GetNextToken(q,&q,extent,token);
3814  align=ParseCommandOption(MagickAlignOptions,MagickFalse,token);
3815  if (align == -1)
3816  {
3817  status=MagickFalse;
3818  break;
3819  }
3820  graphic_context[n]->align=(AlignType) align;
3821  break;
3822  }
3823  if (LocaleCompare("text-anchor",keyword) == 0)
3824  {
3825  ssize_t
3826  align;
3827 
3828  (void) GetNextToken(q,&q,extent,token);
3829  align=ParseCommandOption(MagickAlignOptions,MagickFalse,token);
3830  if (align == -1)
3831  {
3832  status=MagickFalse;
3833  break;
3834  }
3835  graphic_context[n]->align=(AlignType) align;
3836  break;
3837  }
3838  if (LocaleCompare("text-antialias",keyword) == 0)
3839  {
3840  (void) GetNextToken(q,&q,extent,token);
3841  graphic_context[n]->text_antialias=StringToLong(token) != 0 ?
3842  MagickTrue : MagickFalse;
3843  break;
3844  }
3845  if (LocaleCompare("text-undercolor",keyword) == 0)
3846  {
3847  (void) GetNextToken(q,&q,extent,token);
3848  status&=QueryColorDatabase(token,&graphic_context[n]->undercolor,
3849  &image->exception);
3850  break;
3851  }
3852  if (LocaleCompare("translate",keyword) == 0)
3853  {
3854  (void) GetNextToken(q,&q,extent,token);
3855  affine.tx=GetDrawValue(token,&next_token);
3856  if (token == next_token)
3857  ThrowPointExpectedException(image,token);
3858  (void) GetNextToken(q,&q,extent,token);
3859  if (*token == ',')
3860  (void) GetNextToken(q,&q,extent,token);
3861  affine.ty=GetDrawValue(token,&next_token);
3862  if (token == next_token)
3863  ThrowPointExpectedException(image,token);
3864  break;
3865  }
3866  status=MagickFalse;
3867  break;
3868  }
3869  case 'u':
3870  case 'U':
3871  {
3872  if (LocaleCompare("use",keyword) == 0)
3873  {
3874  const char
3875  *use;
3876 
3877  /*
3878  Get a macro from the MVG document, and "use" it here.
3879  */
3880  (void) GetNextToken(q,&q,extent,token);
3881  use=(const char *) GetValueFromSplayTree(macros,token);
3882  if (use != (const char *) NULL)
3883  {
3884  clone_info=CloneDrawInfo((ImageInfo *) NULL,graphic_context[n]);
3885  (void) CloneString(&clone_info->primitive,use);
3886  status=RenderMVGContent(image,clone_info,depth+1);
3887  clone_info=DestroyDrawInfo(clone_info);
3888  }
3889  break;
3890  }
3891  status=MagickFalse;
3892  break;
3893  }
3894  case 'v':
3895  case 'V':
3896  {
3897  if (LocaleCompare("viewbox",keyword) == 0)
3898  {
3899  (void) GetNextToken(q,&q,extent,token);
3900  graphic_context[n]->viewbox.x=CastDoubleToLong(ceil(
3901  GetDrawValue(token,&next_token)-0.5));
3902  if (token == next_token)
3903  ThrowPointExpectedException(image,token);
3904  (void) GetNextToken(q,&q,extent,token);
3905  if (*token == ',')
3906  (void) GetNextToken(q,&q,extent,token);
3907  graphic_context[n]->viewbox.y=CastDoubleToLong(ceil(
3908  GetDrawValue(token,&next_token)-0.5));
3909  if (token == next_token)
3910  ThrowPointExpectedException(image,token);
3911  (void) GetNextToken(q,&q,extent,token);
3912  if (*token == ',')
3913  (void) GetNextToken(q,&q,extent,token);
3914  graphic_context[n]->viewbox.width=CastDoubleToUnsigned(
3915  GetDrawValue(token,&next_token)+0.5);
3916  if (token == next_token)
3917  ThrowPointExpectedException(image,token);
3918  (void) GetNextToken(q,&q,extent,token);
3919  if (*token == ',')
3920  (void) GetNextToken(q,&q,extent,token);
3921  graphic_context[n]->viewbox.height=CastDoubleToUnsigned(
3922  GetDrawValue(token,&next_token)+0.5);
3923  if (token == next_token)
3924  ThrowPointExpectedException(image,token);
3925  break;
3926  }
3927  status=MagickFalse;
3928  break;
3929  }
3930  case 'w':
3931  case 'W':
3932  {
3933  if (LocaleCompare("word-spacing",keyword) == 0)
3934  {
3935  (void) GetNextToken(q,&q,extent,token);
3936  graphic_context[n]->interword_spacing=GetDrawValue(token,
3937  &next_token);
3938  if (token == next_token)
3939  ThrowPointExpectedException(image,token);
3940  break;
3941  }
3942  status=MagickFalse;
3943  break;
3944  }
3945  default:
3946  {
3947  status=MagickFalse;
3948  break;
3949  }
3950  }
3951  if (status == MagickFalse)
3952  break;
3953  if ((fabs(affine.sx-1.0) >= MagickEpsilon) ||
3954  (fabs(affine.rx) >= MagickEpsilon) || (fabs(affine.ry) >= MagickEpsilon) ||
3955  (fabs(affine.sy-1.0) >= MagickEpsilon) ||
3956  (fabs(affine.tx) >= MagickEpsilon) || (fabs(affine.ty) >= MagickEpsilon))
3957  {
3958  graphic_context[n]->affine.sx=current.sx*affine.sx+current.ry*affine.rx;
3959  graphic_context[n]->affine.rx=current.rx*affine.sx+current.sy*affine.rx;
3960  graphic_context[n]->affine.ry=current.sx*affine.ry+current.ry*affine.sy;
3961  graphic_context[n]->affine.sy=current.rx*affine.ry+current.sy*affine.sy;
3962  graphic_context[n]->affine.tx=current.sx*affine.tx+current.ry*affine.ty+
3963  current.tx;
3964  graphic_context[n]->affine.ty=current.rx*affine.tx+current.sy*affine.ty+
3965  current.ty;
3966  }
3967  if (primitive_type == UndefinedPrimitive)
3968  {
3969  if ((draw_info->debug != MagickFalse) && (q > p))
3970  (void) LogMagickEvent(DrawEvent,GetMagickModule()," %.*s",(int)
3971  (q-p-1),p);
3972  continue;
3973  }
3974  /*
3975  Parse the primitive attributes.
3976  */
3977  for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++)
3978  if (primitive_info[i].text != (char *) NULL)
3979  primitive_info[i].text=DestroyString(primitive_info[i].text);
3980  i=0;
3981  mvg_info.offset=i;
3982  j=0;
3983  primitive_info[0].point.x=0.0;
3984  primitive_info[0].point.y=0.0;
3985  primitive_info[0].coordinates=0;
3986  primitive_info[0].method=FloodfillMethod;
3987  primitive_info[0].closed_subpath=MagickFalse;
3988  for (x=0; *q != '\0'; x++)
3989  {
3990  /*
3991  Define points.
3992  */
3993  if (IsPoint(q) == MagickFalse)
3994  break;
3995  (void) GetNextToken(q,&q,extent,token);
3996  point.x=GetDrawValue(token,&next_token);
3997  if (token == next_token)
3998  ThrowPointExpectedException(image,token);
3999  (void) GetNextToken(q,&q,extent,token);
4000  if (*token == ',')
4001  (void) GetNextToken(q,&q,extent,token);
4002  point.y=GetDrawValue(token,&next_token);
4003  if (token == next_token)
4004  ThrowPointExpectedException(image,token);
4005  (void) GetNextToken(q,(const char **) NULL,extent,token);
4006  if (*token == ',')
4007  (void) GetNextToken(q,&q,extent,token);
4008  primitive_info[i].primitive=primitive_type;
4009  primitive_info[i].point=point;
4010  primitive_info[i].coordinates=0;
4011  primitive_info[i].method=FloodfillMethod;
4012  primitive_info[i].closed_subpath=MagickFalse;
4013  i++;
4014  mvg_info.offset=i;
4015  if (i < (ssize_t) number_points)
4016  continue;
4017  status&=CheckPrimitiveExtent(&mvg_info,(double) number_points);
4018  primitive_info=(*mvg_info.primitive_info);
4019  }
4020  if (status == MagickFalse)
4021  break;
4022  if (primitive_info[j].text != (char *) NULL)
4023  primitive_info[j].text=DestroyString(primitive_info[j].text);
4024  primitive_info[j].primitive=primitive_type;
4025  primitive_info[j].coordinates=(size_t) x;
4026  primitive_info[j].method=FloodfillMethod;
4027  primitive_info[j].closed_subpath=MagickFalse;
4028  /*
4029  Circumscribe primitive within a circle.
4030  */
4031  bounds.x1=primitive_info[j].point.x;
4032  bounds.y1=primitive_info[j].point.y;
4033  bounds.x2=primitive_info[j].point.x;
4034  bounds.y2=primitive_info[j].point.y;
4035  for (k=1; k < (ssize_t) primitive_info[j].coordinates; k++)
4036  {
4037  point=primitive_info[j+k].point;
4038  if (point.x < bounds.x1)
4039  bounds.x1=point.x;
4040  if (point.y < bounds.y1)
4041  bounds.y1=point.y;
4042  if (point.x > bounds.x2)
4043  bounds.x2=point.x;
4044  if (point.y > bounds.y2)
4045  bounds.y2=point.y;
4046  }
4047  /*
4048  Speculate how many points our primitive might consume.
4049  */
4050  coordinates=(double) primitive_info[j].coordinates;
4051  switch (primitive_type)
4052  {
4053  case RectanglePrimitive:
4054  {
4055  coordinates*=5.0;
4056  break;
4057  }
4058  case RoundRectanglePrimitive:
4059  {
4060  double
4061  alpha,
4062  beta,
4063  radius;
4064 
4065  alpha=bounds.x2-bounds.x1;
4066  beta=bounds.y2-bounds.y1;
4067  radius=hypot(alpha,beta);
4068  coordinates*=5.0;
4069  coordinates+=2.0*((size_t) ceil((double) MagickPI*radius))+6.0*
4070  BezierQuantum+360.0;
4071  break;
4072  }
4073  case BezierPrimitive:
4074  {
4075  coordinates=(BezierQuantum*(double) primitive_info[j].coordinates);
4076  break;
4077  }
4078  case PathPrimitive:
4079  {
4080  char
4081  *s,
4082  *t;
4083 
4084  (void) GetNextToken(q,&q,extent,token);
4085  coordinates=1.0;
4086  t=token;
4087  for (s=token; *s != '\0'; s=t)
4088  {
4089  double
4090  value;
4091 
4092  value=GetDrawValue(s,&t);
4093  (void) value;
4094  if (s == t)
4095  {
4096  t++;
4097  continue;
4098  }
4099  coordinates++;
4100  }
4101  for (s=token; *s != '\0'; s++)
4102  if (strspn(s,"AaCcQqSsTt") != 0)
4103  coordinates+=(20.0*BezierQuantum)+360.0;
4104  break;
4105  }
4106  default:
4107  break;
4108  }
4109  if (status == MagickFalse)
4110  break;
4111  if (((size_t) (i+coordinates)) >= number_points)
4112  {
4113  /*
4114  Resize based on speculative points required by primitive.
4115  */
4116  number_points+=coordinates+1;
4117  if (number_points < (size_t) coordinates)
4118  {
4119  (void) ThrowMagickException(&image->exception,GetMagickModule(),
4120  ResourceLimitError,"MemoryAllocationFailed","`%s'",
4121  image->filename);
4122  break;
4123  }
4124  mvg_info.offset=i;
4125  status&=CheckPrimitiveExtent(&mvg_info,(double) number_points);
4126  primitive_info=(*mvg_info.primitive_info);
4127  }
4128  status&=CheckPrimitiveExtent(&mvg_info,PrimitiveExtentPad);
4129  primitive_info=(*mvg_info.primitive_info);
4130  if (status == MagickFalse)
4131  break;
4132  mvg_info.offset=j;
4133  switch (primitive_type)
4134  {
4135  case PointPrimitive:
4136  default:
4137  {
4138  if (primitive_info[j].coordinates != 1)
4139  {
4140  status=MagickFalse;
4141  break;
4142  }
4143  status&=TracePoint(primitive_info+j,primitive_info[j].point);
4144  primitive_info=(*mvg_info.primitive_info);
4145  i=(ssize_t) (j+primitive_info[j].coordinates);
4146  break;
4147  }
4148  case LinePrimitive:
4149  {
4150  if (primitive_info[j].coordinates != 2)
4151  {
4152  status=MagickFalse;
4153  break;
4154  }
4155  status&=TraceLine(primitive_info+j,primitive_info[j].point,
4156  primitive_info[j+1].point);
4157  primitive_info=(*mvg_info.primitive_info);
4158  i=(ssize_t) (j+primitive_info[j].coordinates);
4159  break;
4160  }
4161  case RectanglePrimitive:
4162  {
4163  if (primitive_info[j].coordinates != 2)
4164  {
4165  status=MagickFalse;
4166  break;
4167  }
4168  status&=TraceRectangle(primitive_info+j,primitive_info[j].point,
4169  primitive_info[j+1].point);
4170  primitive_info=(*mvg_info.primitive_info);
4171  i=(ssize_t) (j+primitive_info[j].coordinates);
4172  break;
4173  }
4174  case RoundRectanglePrimitive:
4175  {
4176  if (primitive_info[j].coordinates != 3)
4177  {
4178  status=MagickFalse;
4179  break;
4180  }
4181  if ((primitive_info[j+2].point.x < 0.0) ||
4182  (primitive_info[j+2].point.y < 0.0))
4183  {
4184  status=MagickFalse;
4185  break;
4186  }
4187  if ((primitive_info[j+1].point.x-primitive_info[j].point.x) < 0.0)
4188  {
4189  status=MagickFalse;
4190  break;
4191  }
4192  if ((primitive_info[j+1].point.y-primitive_info[j].point.y) < 0.0)
4193  {
4194  status=MagickFalse;
4195  break;
4196  }
4197  status&=TraceRoundRectangle(&mvg_info,primitive_info[j].point,
4198  primitive_info[j+1].point,primitive_info[j+2].point);
4199  primitive_info=(*mvg_info.primitive_info);
4200  i=(ssize_t) (j+primitive_info[j].coordinates);
4201  break;
4202  }
4203  case ArcPrimitive:
4204  {
4205  if (primitive_info[j].coordinates != 3)
4206  {
4207  status=MagickFalse;
4208  break;
4209  }
4210  status&=TraceArc(&mvg_info,primitive_info[j].point,
4211  primitive_info[j+1].point,primitive_info[j+2].point);
4212  primitive_info=(*mvg_info.primitive_info);
4213  i=(ssize_t) (j+primitive_info[j].coordinates);
4214  break;
4215  }
4216  case EllipsePrimitive:
4217  {
4218  if (primitive_info[j].coordinates != 3)
4219  {
4220  status=MagickFalse;
4221  break;
4222  }
4223  if ((primitive_info[j+1].point.x < 0.0) ||
4224  (primitive_info[j+1].point.y < 0.0))
4225  {
4226  status=MagickFalse;
4227  break;
4228  }
4229  status&=TraceEllipse(&mvg_info,primitive_info[j].point,
4230  primitive_info[j+1].point,primitive_info[j+2].point);
4231  primitive_info=(*mvg_info.primitive_info);
4232  i=(ssize_t) (j+primitive_info[j].coordinates);
4233  break;
4234  }
4235  case CirclePrimitive:
4236  {
4237  if (primitive_info[j].coordinates != 2)
4238  {
4239  status=MagickFalse;
4240  break;
4241  }
4242  status&=TraceCircle(&mvg_info,primitive_info[j].point,
4243  primitive_info[j+1].point);
4244  primitive_info=(*mvg_info.primitive_info);
4245  i=(ssize_t) (j+primitive_info[j].coordinates);
4246  break;
4247  }
4248  case PolylinePrimitive:
4249  {
4250  if (primitive_info[j].coordinates < 1)
4251  {
4252  status=MagickFalse;
4253  break;
4254  }
4255  break;
4256  }
4257  case PolygonPrimitive:
4258  {
4259  if (primitive_info[j].coordinates < 3)
4260  {
4261  status=MagickFalse;
4262  break;
4263  }
4264  primitive_info[i]=primitive_info[j];
4265  primitive_info[i].coordinates=0;
4266  primitive_info[j].coordinates++;
4267  primitive_info[j].closed_subpath=MagickTrue;
4268  i++;
4269  break;
4270  }
4271  case BezierPrimitive:
4272  {
4273  if (primitive_info[j].coordinates < 3)
4274  {
4275  status=MagickFalse;
4276  break;
4277  }
4278  status&=TraceBezier(&mvg_info,primitive_info[j].coordinates);
4279  primitive_info=(*mvg_info.primitive_info);
4280  i=(ssize_t) (j+primitive_info[j].coordinates);
4281  break;
4282  }
4283  case PathPrimitive:
4284  {
4285  coordinates=(double) TracePath(image,&mvg_info,token);
4286  primitive_info=(*mvg_info.primitive_info);
4287  if (coordinates < 0.0)
4288  {
4289  status=MagickFalse;
4290  break;
4291  }
4292  i=(ssize_t) (j+coordinates);
4293  break;
4294  }
4295  case ColorPrimitive:
4296  case MattePrimitive:
4297  {
4298  ssize_t
4299  method;
4300 
4301  if (primitive_info[j].coordinates != 1)
4302  {
4303  status=MagickFalse;
4304  break;
4305  }
4306  (void) GetNextToken(q,&q,extent,token);
4307  method=ParseCommandOption(MagickMethodOptions,MagickFalse,token);
4308  if (method == -1)
4309  {
4310  status=MagickFalse;
4311  break;
4312  }
4313  primitive_info[j].method=(PaintMethod) method;
4314  break;
4315  }
4316  case TextPrimitive:
4317  {
4318  char
4319  geometry[MagickPathExtent];
4320 
4321  if (primitive_info[j].coordinates != 1)
4322  {
4323  status=MagickFalse;
4324  break;
4325  }
4326  if (*token != ',')
4327  (void) GetNextToken(q,&q,extent,token);
4328  (void) CloneString(&primitive_info[j].text,token);
4329  /*
4330  Compute text cursor offset.
4331  */
4332  clone_info=CloneDrawInfo((ImageInfo *) NULL,graphic_context[n]);
4333  if ((fabs(mvg_info.point.x-primitive_info->point.x) < MagickEpsilon) &&
4334  (fabs(mvg_info.point.y-primitive_info->point.y) < MagickEpsilon))
4335  {
4336  mvg_info.point=primitive_info->point;
4337  primitive_info->point.x+=cursor;
4338  }
4339  else
4340  {
4341  mvg_info.point=primitive_info->point;
4342  cursor=0.0;
4343  }
4344  (void) FormatLocaleString(geometry,MagickPathExtent,"%+f%+f",
4345  primitive_info->point.x,primitive_info->point.y);
4346  clone_info->render=MagickFalse;
4347  clone_info->text=AcquireString(token);
4348  status&=GetTypeMetrics(image,clone_info,&metrics);
4349  clone_info=DestroyDrawInfo(clone_info);
4350  cursor+=metrics.width;
4351  if (graphic_context[n]->compliance != SVGCompliance)
4352  cursor=0.0;
4353  break;
4354  }
4355  case ImagePrimitive:
4356  {
4357  if (primitive_info[j].coordinates != 2)
4358  {
4359  status=MagickFalse;
4360  break;
4361  }
4362  (void) GetNextToken(q,&q,extent,token);
4363  (void) CloneString(&primitive_info[j].text,token);
4364  break;
4365  }
4366  }
4367  mvg_info.offset=i;
4368  if (status == 0)
4369  break;
4370  primitive_info[i].primitive=UndefinedPrimitive;
4371  if ((draw_info->debug != MagickFalse) && (q > p))
4372  (void) LogMagickEvent(DrawEvent,GetMagickModule()," %.*s",(int) (q-p),p);
4373  /*
4374  Sanity check.
4375  */
4376  status&=CheckPrimitiveExtent(&mvg_info,ExpandAffine(
4377  &graphic_context[n]->affine));
4378  primitive_info=(*mvg_info.primitive_info);
4379  if (status == 0)
4380  break;
4381  status&=CheckPrimitiveExtent(&mvg_info,(double)
4382  graphic_context[n]->stroke_width);
4383  primitive_info=(*mvg_info.primitive_info);
4384  if (status == 0)
4385  break;
4386  if (i == 0)
4387  continue;
4388  /*
4389  Transform points.
4390  */
4391  for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++)
4392  {
4393  point=primitive_info[i].point;
4394  primitive_info[i].point.x=graphic_context[n]->affine.sx*point.x+
4395  graphic_context[n]->affine.ry*point.y+graphic_context[n]->affine.tx;
4396  primitive_info[i].point.y=graphic_context[n]->affine.rx*point.x+
4397  graphic_context[n]->affine.sy*point.y+graphic_context[n]->affine.ty;
4398  point=primitive_info[i].point;
4399  if (point.x < graphic_context[n]->bounds.x1)
4400  graphic_context[n]->bounds.x1=point.x;
4401  if (point.y < graphic_context[n]->bounds.y1)
4402  graphic_context[n]->bounds.y1=point.y;
4403  if (point.x > graphic_context[n]->bounds.x2)
4404  graphic_context[n]->bounds.x2=point.x;
4405  if (point.y > graphic_context[n]->bounds.y2)
4406  graphic_context[n]->bounds.y2=point.y;
4407  if (primitive_info[i].primitive == ImagePrimitive)
4408  break;
4409  if (i >= (ssize_t) number_points)
4410  ThrowFatalException(ResourceLimitFatalError,"MemoryAllocationFailed");
4411  }
4412  if (graphic_context[n]->render != MagickFalse)
4413  {
4414  if ((n != 0) && (graphic_context[n]->compliance != SVGCompliance) &&
4415  (graphic_context[n]->clip_mask != (char *) NULL) &&
4416  (LocaleCompare(graphic_context[n]->clip_mask,
4417  graphic_context[n-1]->clip_mask) != 0))
4418  {
4419  const char
4420  *clip_path;
4421 
4422  clip_path=(const char *) GetValueFromSplayTree(macros,
4423  graphic_context[n]->clip_mask);
4424  if (clip_path != (const char *) NULL)
4425  (void) SetImageArtifact(image,graphic_context[n]->clip_mask,
4426  clip_path);
4427  status&=DrawClipPath(image,graphic_context[n],
4428  graphic_context[n]->clip_mask);
4429  }
4430  status&=DrawPrimitive(image,graphic_context[n],primitive_info);
4431  }
4432  proceed=SetImageProgress(image,RenderImageTag,q-primitive,(MagickSizeType)
4433  primitive_extent);
4434  if (proceed == MagickFalse)
4435  break;
4436  if (status == 0)
4437  break;
4438  }
4439  if (draw_info->debug != MagickFalse)
4440  (void) LogMagickEvent(DrawEvent,GetMagickModule(),"end draw-image");
4441  /*
4442  Relinquish resources.
4443  */
4444  macros=DestroySplayTree(macros);
4445  token=DestroyString(token);
4446  if (primitive_info != (PrimitiveInfo *) NULL)
4447  {
4448  for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++)
4449  if (primitive_info[i].text != (char *) NULL)
4450  primitive_info[i].text=DestroyString(primitive_info[i].text);
4451  primitive_info=(PrimitiveInfo *) RelinquishMagickMemory(primitive_info);
4452  }
4453  primitive=DestroyString(primitive);
4454  for ( ; n >= 0; n--)
4455  graphic_context[n]=DestroyDrawInfo(graphic_context[n]);
4456  graphic_context=(DrawInfo **) RelinquishMagickMemory(graphic_context);
4457  if (status == MagickFalse)
4458  ThrowBinaryImageException(DrawError,
4459  "NonconformingDrawingPrimitiveDefinition",keyword);
4460  return(status != 0 ? MagickTrue : MagickFalse);
4461 }
4462 
4463 MagickExport MagickBooleanType DrawImage(Image *image,const DrawInfo *draw_info)
4464 {
4465  return(RenderMVGContent(image,draw_info,0));
4466 }
4467 ␌
4468 /*
4469 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4470 % %
4471 % %
4472 % %
4473 % D r a w P a t t e r n P a t h %
4474 % %
4475 % %
4476 % %
4477 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4478 %
4479 % DrawPatternPath() draws a pattern.
4480 %
4481 % The format of the DrawPatternPath method is:
4482 %
4483 % MagickBooleanType DrawPatternPath(Image *image,const DrawInfo *draw_info,
4484 % const char *name,Image **pattern)
4485 %
4486 % A description of each parameter follows:
4487 %
4488 % o image: the image.
4489 %
4490 % o draw_info: the draw info.
4491 %
4492 % o name: the pattern name.
4493 %
4494 % o image: the image.
4495 %
4496 */
4497 MagickExport MagickBooleanType DrawPatternPath(Image *image,
4498  const DrawInfo *draw_info,const char *name,Image **pattern)
4499 {
4500  char
4501  property[MaxTextExtent];
4502 
4503  const char
4504  *geometry,
4505  *path,
4506  *type;
4507 
4508  DrawInfo
4509  *clone_info;
4510 
4511  ImageInfo
4512  *image_info;
4513 
4514  MagickBooleanType
4515  status;
4516 
4517  assert(image != (Image *) NULL);
4518  assert(image->signature == MagickCoreSignature);
4519  assert(draw_info != (const DrawInfo *) NULL);
4520  if (IsEventLogging() != MagickFalse)
4521  (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
4522  assert(name != (const char *) NULL);
4523  (void) FormatLocaleString(property,MaxTextExtent,"%s",name);
4524  path=GetImageArtifact(image,property);
4525  if (path == (const char *) NULL)
4526  return(MagickFalse);
4527  (void) FormatLocaleString(property,MaxTextExtent,"%s-geometry",name);
4528  geometry=GetImageArtifact(image,property);
4529  if (geometry == (const char *) NULL)
4530  return(MagickFalse);
4531  if ((*pattern) != (Image *) NULL)
4532  *pattern=DestroyImage(*pattern);
4533  image_info=AcquireImageInfo();
4534  image_info->size=AcquireString(geometry);
4535  *pattern=AcquireImage(image_info);
4536  image_info=DestroyImageInfo(image_info);
4537  (void) QueryColorDatabase("#00000000",&(*pattern)->background_color,
4538  &image->exception);
4539  (void) SetImageBackgroundColor(*pattern);
4540  if (draw_info->debug != MagickFalse)
4541  (void) LogMagickEvent(DrawEvent,GetMagickModule(),
4542  "begin pattern-path %s %s",name,geometry);
4543  clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
4544  if (clone_info->fill_pattern != (Image *) NULL)
4545  clone_info->fill_pattern=DestroyImage(clone_info->fill_pattern);
4546  if (clone_info->stroke_pattern != (Image *) NULL)
4547  clone_info->stroke_pattern=DestroyImage(clone_info->stroke_pattern);
4548  (void) FormatLocaleString(property,MaxTextExtent,"%s-type",name);
4549  type=GetImageArtifact(image,property);
4550  if (type != (const char *) NULL)
4551  clone_info->gradient.type=(GradientType) ParseCommandOption(
4552  MagickGradientOptions,MagickFalse,type);
4553  (void) CloneString(&clone_info->primitive,path);
4554  status=RenderMVGContent(*pattern,clone_info,0);
4555  clone_info=DestroyDrawInfo(clone_info);
4556  if (draw_info->debug != MagickFalse)
4557  (void) LogMagickEvent(DrawEvent,GetMagickModule(),"end pattern-path");
4558  return(status);
4559 }
4560 ␌
4561 /*
4562 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4563 % %
4564 % %
4565 % %
4566 + D r a w P o l y g o n P r i m i t i v e %
4567 % %
4568 % %
4569 % %
4570 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4571 %
4572 % DrawPolygonPrimitive() draws a polygon on the image.
4573 %
4574 % The format of the DrawPolygonPrimitive method is:
4575 %
4576 % MagickBooleanType DrawPolygonPrimitive(Image *image,
4577 % const DrawInfo *draw_info,const PrimitiveInfo *primitive_info)
4578 %
4579 % A description of each parameter follows:
4580 %
4581 % o image: the image.
4582 %
4583 % o draw_info: the draw info.
4584 %
4585 % o primitive_info: Specifies a pointer to a PrimitiveInfo structure.
4586 %
4587 */
4588 
4589 static PolygonInfo **DestroyPolygonTLS(PolygonInfo **polygon_info)
4590 {
4591  ssize_t
4592  i;
4593 
4594  assert(polygon_info != (PolygonInfo **) NULL);
4595  for (i=0; i < (ssize_t) GetMagickResourceLimit(ThreadResource); i++)
4596  if (polygon_info[i] != (PolygonInfo *) NULL)
4597  polygon_info[i]=DestroyPolygonInfo(polygon_info[i]);
4598  polygon_info=(PolygonInfo **) RelinquishMagickMemory(polygon_info);
4599  return(polygon_info);
4600 }
4601 
4602 static PolygonInfo **AcquirePolygonTLS(const DrawInfo *draw_info,
4603  const PrimitiveInfo *primitive_info,ExceptionInfo *exception)
4604 {
4605  PathInfo
4606  *magick_restrict path_info;
4607 
4608  PolygonInfo
4609  **polygon_info;
4610 
4611  size_t
4612  number_threads;
4613 
4614  number_threads=(size_t) GetMagickResourceLimit(ThreadResource);
4615  polygon_info=(PolygonInfo **) AcquireQuantumMemory(number_threads,
4616  sizeof(*polygon_info));
4617  if (polygon_info == (PolygonInfo **) NULL)
4618  {
4619  (void) ThrowMagickException(exception,GetMagickModule(),
4620  ResourceLimitError,"MemoryAllocationFailed","`%s'","");
4621  return((PolygonInfo **) NULL);
4622  }
4623  (void) memset(polygon_info,0,number_threads*sizeof(*polygon_info));
4624  path_info=ConvertPrimitiveToPath(draw_info,primitive_info,exception);
4625  if (path_info == (PathInfo *) NULL)
4626  return(DestroyPolygonTLS(polygon_info));
4627  polygon_info[0]=ConvertPathToPolygon(path_info,exception);
4628  if (polygon_info[0] == (PolygonInfo *) NULL)
4629  {
4630  (void) ThrowMagickException(exception,GetMagickModule(),
4631  ResourceLimitError,"MemoryAllocationFailed","`%s'","");
4632  return(DestroyPolygonTLS(polygon_info));
4633  }
4634  path_info=(PathInfo *) RelinquishMagickMemory(path_info);
4635  return(polygon_info);
4636 }
4637 
4638 static MagickBooleanType AcquirePolygonEdgesTLS(PolygonInfo **polygon_info,
4639  const size_t number_threads,ExceptionInfo *exception)
4640 {
4641  ssize_t
4642  i;
4643 
4644  for (i=1; i < (ssize_t) number_threads; i++)
4645  {
4646  EdgeInfo
4647  *edge_info;
4648 
4649  ssize_t
4650  j;
4651 
4652  polygon_info[i]=(PolygonInfo *) AcquireMagickMemory(
4653  sizeof(*polygon_info[i]));
4654  if (polygon_info[i] == (PolygonInfo *) NULL)
4655  {
4656  (void) ThrowMagickException(exception,GetMagickModule(),
4657  ResourceLimitError,"MemoryAllocationFailed","`%s'","");
4658  return(MagickFalse);
4659  }
4660  polygon_info[i]->number_edges=0;
4661  edge_info=polygon_info[0]->edges;
4662  polygon_info[i]->edges=(EdgeInfo *) AcquireQuantumMemory(
4663  polygon_info[0]->number_edges,sizeof(*edge_info));
4664  if (polygon_info[i]->edges == (EdgeInfo *) NULL)
4665  {
4666  (void) ThrowMagickException(exception,GetMagickModule(),
4667  ResourceLimitError,"MemoryAllocationFailed","`%s'","");
4668  return(MagickFalse);
4669  }
4670  (void) memcpy(polygon_info[i]->edges,edge_info,
4671  polygon_info[0]->number_edges*sizeof(*edge_info));
4672  for (j=0; j < (ssize_t) polygon_info[i]->number_edges; j++)
4673  polygon_info[i]->edges[j].points=(PointInfo *) NULL;
4674  polygon_info[i]->number_edges=polygon_info[0]->number_edges;
4675  for (j=0; j < (ssize_t) polygon_info[i]->number_edges; j++)
4676  {
4677  edge_info=polygon_info[0]->edges+j;
4678  polygon_info[i]->edges[j].points=(PointInfo *) AcquireQuantumMemory(
4679  edge_info->number_points,sizeof(*edge_info));
4680  if (polygon_info[i]->edges[j].points == (PointInfo *) NULL)
4681  {
4682  (void) ThrowMagickException(exception,GetMagickModule(),
4683  ResourceLimitError,"MemoryAllocationFailed","`%s'","");
4684  return(MagickFalse);
4685  }
4686  (void) memcpy(polygon_info[i]->edges[j].points,edge_info->points,
4687  edge_info->number_points*sizeof(*edge_info->points));
4688  }
4689  }
4690  return(MagickTrue);
4691 }
4692 
4693 static size_t DestroyEdge(PolygonInfo *polygon_info,const ssize_t edge)
4694 {
4695  assert(edge < (ssize_t) polygon_info->number_edges);
4696  polygon_info->edges[edge].points=(PointInfo *) RelinquishMagickMemory(
4697  polygon_info->edges[edge].points);
4698  polygon_info->number_edges--;
4699  if (edge < (ssize_t) polygon_info->number_edges)
4700  (void) memmove(polygon_info->edges+edge,polygon_info->edges+edge+1,
4701  (size_t) (polygon_info->number_edges-edge)*sizeof(*polygon_info->edges));
4702  return(polygon_info->number_edges);
4703 }
4704 
4705 static double GetOpacityPixel(PolygonInfo *polygon_info,const double mid,
4706  const MagickBooleanType fill,const FillRule fill_rule,const ssize_t x,
4707  const ssize_t y,double *stroke_opacity)
4708 {
4709  double
4710  alpha,
4711  beta,
4712  distance,
4713  subpath_opacity;
4714 
4715  PointInfo
4716  delta;
4717 
4718  EdgeInfo
4719  *p;
4720 
4721  const PointInfo
4722  *q;
4723 
4724  ssize_t
4725  i;
4726 
4727  ssize_t
4728  j,
4729  winding_number;
4730 
4731  /*
4732  Compute fill & stroke opacity for this (x,y) point.
4733  */
4734  *stroke_opacity=0.0;
4735  subpath_opacity=0.0;
4736  p=polygon_info->edges;
4737  for (j=0; j < (ssize_t) polygon_info->number_edges; j++, p++)
4738  {
4739  if ((double) y <= (p->bounds.y1-mid-0.5))
4740  break;
4741  if ((double) y > (p->bounds.y2+mid+0.5))
4742  {
4743  p--;
4744  (void) DestroyEdge(polygon_info,j--);
4745  continue;
4746  }
4747  if (((double) x <= (p->bounds.x1-mid-0.5)) ||
4748  ((double) x > (p->bounds.x2+mid+0.5)))
4749  continue;
4750  i=(ssize_t) MagickMax((double) p->highwater,1.0);
4751  for ( ; i < (ssize_t) p->number_points; i++)
4752  {
4753  if ((double) y <= (p->points[i-1].y-mid-0.5))
4754  break;
4755  if ((double) y > (p->points[i].y+mid+0.5))
4756  continue;
4757  if (p->scanline != (double) y)
4758  {
4759  p->scanline=(double) y;
4760  p->highwater=(size_t) i;
4761  }
4762  /*
4763  Compute distance between a point and an edge.
4764  */
4765  q=p->points+i-1;
4766  delta.x=(q+1)->x-q->x;
4767  delta.y=(q+1)->y-q->y;
4768  beta=delta.x*(x-q->x)+delta.y*(y-q->y);
4769  if (beta <= 0.0)
4770  {
4771  delta.x=(double) x-q->x;
4772  delta.y=(double) y-q->y;
4773  distance=delta.x*delta.x+delta.y*delta.y;
4774  }
4775  else
4776  {
4777  alpha=delta.x*delta.x+delta.y*delta.y;
4778  if (beta >= alpha)
4779  {
4780  delta.x=(double) x-(q+1)->x;
4781  delta.y=(double) y-(q+1)->y;
4782  distance=delta.x*delta.x+delta.y*delta.y;
4783  }
4784  else
4785  {
4786  alpha=PerceptibleReciprocal(alpha);
4787  beta=delta.x*(y-q->y)-delta.y*(x-q->x);
4788  distance=alpha*beta*beta;
4789  }
4790  }
4791  /*
4792  Compute stroke & subpath opacity.
4793  */
4794  beta=0.0;
4795  if (p->ghostline == MagickFalse)
4796  {
4797  alpha=mid+0.5;
4798  if ((*stroke_opacity < 1.0) &&
4799  (distance <= ((alpha+0.25)*(alpha+0.25))))
4800  {
4801  alpha=mid-0.5;
4802  if (distance <= ((alpha+0.25)*(alpha+0.25)))
4803  *stroke_opacity=1.0;
4804  else
4805  {
4806  beta=1.0;
4807  if (fabs(distance-1.0) >= MagickEpsilon)
4808  beta=sqrt((double) distance);
4809  alpha=beta-mid-0.5;
4810  if (*stroke_opacity < ((alpha-0.25)*(alpha-0.25)))
4811  *stroke_opacity=(alpha-0.25)*(alpha-0.25);
4812  }
4813  }
4814  }
4815  if ((fill == MagickFalse) || (distance > 1.0) || (subpath_opacity >= 1.0))
4816  continue;
4817  if (distance <= 0.0)
4818  {
4819  subpath_opacity=1.0;
4820  continue;
4821  }
4822  if (distance > 1.0)
4823  continue;
4824  if (fabs(beta) < MagickEpsilon)
4825  {
4826  beta=1.0;
4827  if (fabs(distance-1.0) >= MagickEpsilon)
4828  beta=sqrt(distance);
4829  }
4830  alpha=beta-1.0;
4831  if (subpath_opacity < (alpha*alpha))
4832  subpath_opacity=alpha*alpha;
4833  }
4834  }
4835  /*
4836  Compute fill opacity.
4837  */
4838  if (fill == MagickFalse)
4839  return(0.0);
4840  if (subpath_opacity >= 1.0)
4841  return(1.0);
4842  /*
4843  Determine winding number.
4844  */
4845  winding_number=0;
4846  p=polygon_info->edges;
4847  for (j=0; j < (ssize_t) polygon_info->number_edges; j++, p++)
4848  {
4849  if ((double) y <= p->bounds.y1)
4850  break;
4851  if (((double) y > p->bounds.y2) || ((double) x <= p->bounds.x1))
4852  continue;
4853  if ((double) x > p->bounds.x2)
4854  {
4855  winding_number+=p->direction != 0 ? 1 : -1;
4856  continue;
4857  }
4858  i=(ssize_t) MagickMax((double) p->highwater,1.0);
4859  for ( ; i < (ssize_t) (p->number_points-1); i++)
4860  if ((double) y <= p->points[i].y)
4861  break;
4862  q=p->points+i-1;
4863  if ((((q+1)->x-q->x)*(y-q->y)) <= (((q+1)->y-q->y)*(x-q->x)))
4864  winding_number+=p->direction != 0 ? 1 : -1;
4865  }
4866  if (fill_rule != NonZeroRule)
4867  {
4868  if ((MagickAbsoluteValue(winding_number) & 0x01) != 0)
4869  return(1.0);
4870  }
4871  else
4872  if (MagickAbsoluteValue(winding_number) != 0)
4873  return(1.0);
4874  return(subpath_opacity);
4875 }
4876 
4877 static MagickBooleanType DrawPolygonPrimitive(Image *image,
4878  const DrawInfo *draw_info,const PrimitiveInfo *primitive_info)
4879 {
4880  typedef struct _ExtentInfo
4881  {
4882  ssize_t
4883  x1,
4884  y1,
4885  x2,
4886  y2;
4887  } ExtentInfo;
4888 
4889  CacheView
4890  *image_view;
4891 
4892  const char
4893  *artifact;
4894 
4895  double
4896  mid;
4897 
4899  *exception;
4900 
4901  ExtentInfo
4902  poly_extent;
4903 
4904  MagickBooleanType
4905  fill,
4906  status;
4907 
4908  PolygonInfo
4909  **magick_restrict polygon_info;
4910 
4911  EdgeInfo
4912  *p;
4913 
4914  SegmentInfo
4915  bounds;
4916 
4917  size_t
4918  number_threads = 1;
4919 
4920  ssize_t
4921  i,
4922  y;
4923 
4924  assert(image != (Image *) NULL);
4925  assert(image->signature == MagickCoreSignature);
4926  assert(draw_info != (DrawInfo *) NULL);
4927  assert(draw_info->signature == MagickCoreSignature);
4928  assert(primitive_info != (PrimitiveInfo *) NULL);
4929  if (IsEventLogging() != MagickFalse)
4930  (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
4931  if (primitive_info->coordinates <= 1)
4932  return(MagickTrue);
4933  /*
4934  Compute bounding box.
4935  */
4936  polygon_info=AcquirePolygonTLS(draw_info,primitive_info,&image->exception);
4937  if (polygon_info == (PolygonInfo **) NULL)
4938  return(MagickFalse);
4939  if (draw_info->debug != MagickFalse)
4940  (void) LogMagickEvent(DrawEvent,GetMagickModule()," begin draw-polygon");
4941  fill=(primitive_info->method == FillToBorderMethod) ||
4942  (primitive_info->method == FloodfillMethod) ? MagickTrue : MagickFalse;
4943  mid=ExpandAffine(&draw_info->affine)*draw_info->stroke_width/2.0;
4944  bounds=polygon_info[0]->edges[0].bounds;
4945  artifact=GetImageArtifact(image,"draw:render-bounding-rectangles");
4946  if (IsStringTrue(artifact) != MagickFalse)
4947  (void) DrawBoundingRectangles(image,draw_info,polygon_info[0]);
4948  for (i=1; i < (ssize_t) polygon_info[0]->number_edges; i++)
4949  {
4950  p=polygon_info[0]->edges+i;
4951  if (p->bounds.x1 < bounds.x1)
4952  bounds.x1=p->bounds.x1;
4953  if (p->bounds.y1 < bounds.y1)
4954  bounds.y1=p->bounds.y1;
4955  if (p->bounds.x2 > bounds.x2)
4956  bounds.x2=p->bounds.x2;
4957  if (p->bounds.y2 > bounds.y2)
4958  bounds.y2=p->bounds.y2;
4959  }
4960  bounds.x1-=(mid+1.0);
4961  bounds.y1-=(mid+1.0);
4962  bounds.x2+=(mid+1.0);
4963  bounds.y2+=(mid+1.0);
4964  if ((bounds.x1 >= (double) image->columns) ||
4965  (bounds.y1 >= (double) image->rows) ||
4966  (bounds.x2 <= 0.0) || (bounds.y2 <= 0.0))
4967  {
4968  polygon_info=DestroyPolygonTLS(polygon_info);
4969  return(MagickTrue); /* virtual polygon */
4970  }
4971  bounds.x1=bounds.x1 < 0.0 ? 0.0 : bounds.x1 >= (double) image->columns-1.0 ?
4972  (double) image->columns-1.0 : bounds.x1;
4973  bounds.y1=bounds.y1 < 0.0 ? 0.0 : bounds.y1 >= (double) image->rows-1.0 ?
4974  (double) image->rows-1.0 : bounds.y1;
4975  bounds.x2=bounds.x2 < 0.0 ? 0.0 : bounds.x2 >= (double) image->columns-1.0 ?
4976  (double) image->columns-1.0 : bounds.x2;
4977  bounds.y2=bounds.y2 < 0.0 ? 0.0 : bounds.y2 >= (double) image->rows-1.0 ?
4978  (double) image->rows-1.0 : bounds.y2;
4979  poly_extent.x1=CastDoubleToLong(ceil(bounds.x1-0.5));
4980  poly_extent.y1=CastDoubleToLong(ceil(bounds.y1-0.5));
4981  poly_extent.x2=CastDoubleToLong(floor(bounds.x2+0.5));
4982  poly_extent.y2=CastDoubleToLong(floor(bounds.y2+0.5));
4983  number_threads=GetMagickNumberThreads(image,image,poly_extent.y2-
4984  poly_extent.y1+1,1);
4985  status=AcquirePolygonEdgesTLS(polygon_info,number_threads,&image->exception);
4986  if (status == MagickFalse)
4987  {
4988  polygon_info=DestroyPolygonTLS(polygon_info);
4989  return(status);
4990  }
4991  status=MagickTrue;
4992  exception=(&image->exception);
4993  image_view=AcquireAuthenticCacheView(image,exception);
4994  if ((primitive_info->coordinates == 1) ||
4995  (polygon_info[0]->number_edges == 0))
4996  {
4997  /*
4998  Draw point.
4999  */
5000 #if defined(MAGICKCORE_OPENMP_SUPPORT)
5001  #pragma omp parallel for schedule(static) shared(status) \
5002  num_threads(number_threads)
5003 #endif
5004  for (y=poly_extent.y1; y <= poly_extent.y2; y++)
5005  {
5006  MagickBooleanType
5007  sync;
5008 
5009  PixelPacket
5010  *magick_restrict q;
5011 
5012  ssize_t
5013  x;
5014 
5015  if (status == MagickFalse)
5016  continue;
5017  x=poly_extent.x1;
5018  q=GetCacheViewAuthenticPixels(image_view,x,y,(size_t) (poly_extent.x2-
5019  x+1),1,exception);
5020  if (q == (PixelPacket *) NULL)
5021  {
5022  status=MagickFalse;
5023  continue;
5024  }
5025  for ( ; x <= poly_extent.x2; x++)
5026  {
5027  if ((x == CastDoubleToLong(ceil(primitive_info->point.x-0.5))) &&
5028  (y == CastDoubleToLong(ceil(primitive_info->point.y-0.5))))
5029  (void) GetFillColor(draw_info,x-poly_extent.x1,y-poly_extent.y1,q);
5030  q++;
5031  }
5032  sync=SyncCacheViewAuthenticPixels(image_view,exception);
5033  if (sync == MagickFalse)
5034  status=MagickFalse;
5035  }
5036  image_view=DestroyCacheView(image_view);
5037  polygon_info=DestroyPolygonTLS(polygon_info);
5038  if (draw_info->debug != MagickFalse)
5039  (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5040  " end draw-polygon");
5041  return(status);
5042  }
5043  /*
5044  Draw polygon or line.
5045  */
5046  poly_extent.y1=CastDoubleToLong(ceil(bounds.y1-0.5));
5047  poly_extent.y2=CastDoubleToLong(floor(bounds.y2+0.5));
5048 #if defined(MAGICKCORE_OPENMP_SUPPORT)
5049  #pragma omp parallel for schedule(static) shared(status) \
5050  num_threads(number_threads)
5051 #endif
5052  for (y=poly_extent.y1; y <= poly_extent.y2; y++)
5053  {
5054  const int
5055  id = GetOpenMPThreadId();
5056 
5057  PixelPacket
5058  fill_color,
5059  stroke_color;
5060 
5061  PixelPacket
5062  *magick_restrict q;
5063 
5064  ssize_t
5065  x;
5066 
5067  if (status == MagickFalse)
5068  continue;
5069  q=GetCacheViewAuthenticPixels(image_view,poly_extent.x1,y,(size_t)
5070  (poly_extent.x2-poly_extent.x1+1),1,exception);
5071  if (q == (PixelPacket *) NULL)
5072  {
5073  status=MagickFalse;
5074  continue;
5075  }
5076  for (x=poly_extent.x1; x <= poly_extent.x2; x++)
5077  {
5078  double
5079  fill_opacity,
5080  stroke_opacity;
5081 
5082  /*
5083  Fill and/or stroke.
5084  */
5085  fill_opacity=GetOpacityPixel(polygon_info[id],mid,fill,
5086  draw_info->fill_rule,x,y,&stroke_opacity);
5087  if (draw_info->stroke_antialias == MagickFalse)
5088  {
5089  fill_opacity=fill_opacity >= AntialiasThreshold ? 1.0 : 0.0;
5090  stroke_opacity=stroke_opacity >= AntialiasThreshold ? 1.0 : 0.0;
5091  }
5092  (void) GetFillColor(draw_info,x-poly_extent.x1,y-poly_extent.y1,
5093  &fill_color);
5094  fill_opacity=(double) ((MagickRealType) QuantumRange-fill_opacity*
5095  ((MagickRealType) QuantumRange-(MagickRealType) fill_color.opacity));
5096  MagickCompositeOver(&fill_color,(MagickRealType) fill_opacity,q,
5097  (MagickRealType) q->opacity,q);
5098  (void) GetStrokeColor(draw_info,x-poly_extent.x1,y-poly_extent.y1,
5099  &stroke_color);
5100  stroke_opacity=(double) ((MagickRealType) QuantumRange-stroke_opacity*
5101  ((MagickRealType) QuantumRange-(MagickRealType) stroke_color.opacity));
5102  MagickCompositeOver(&stroke_color,(MagickRealType) stroke_opacity,q,
5103  (MagickRealType) q->opacity,q);
5104  q++;
5105  }
5106  if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse)
5107  status=MagickFalse;
5108  }
5109  image_view=DestroyCacheView(image_view);
5110  polygon_info=DestroyPolygonTLS(polygon_info);
5111  if (draw_info->debug != MagickFalse)
5112  (void) LogMagickEvent(DrawEvent,GetMagickModule()," end draw-polygon");
5113  return(status);
5114 }
5115 ␌
5116 /*
5117 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5118 % %
5119 % %
5120 % %
5121 % D r a w P r i m i t i v e %
5122 % %
5123 % %
5124 % %
5125 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5126 %
5127 % DrawPrimitive() draws a primitive (line, rectangle, ellipse) on the image.
5128 %
5129 % The format of the DrawPrimitive method is:
5130 %
5131 % MagickBooleanType DrawPrimitive(Image *image,const DrawInfo *draw_info,
5132 % PrimitiveInfo *primitive_info)
5133 %
5134 % A description of each parameter follows:
5135 %
5136 % o image: the image.
5137 %
5138 % o draw_info: the draw info.
5139 %
5140 % o primitive_info: Specifies a pointer to a PrimitiveInfo structure.
5141 %
5142 */
5143 static void LogPrimitiveInfo(const PrimitiveInfo *primitive_info)
5144 {
5145  const char
5146  *methods[] =
5147  {
5148  "point",
5149  "replace",
5150  "floodfill",
5151  "filltoborder",
5152  "reset",
5153  "?"
5154  };
5155 
5156  PointInfo
5157  p,
5158  q,
5159  point;
5160 
5161  ssize_t
5162  i,
5163  x;
5164 
5165  ssize_t
5166  coordinates,
5167  y;
5168 
5169  x=CastDoubleToLong(ceil(primitive_info->point.x-0.5));
5170  y=CastDoubleToLong(ceil(primitive_info->point.y-0.5));
5171  switch (primitive_info->primitive)
5172  {
5173  case PointPrimitive:
5174  {
5175  (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5176  "PointPrimitive %.20g,%.20g %s",(double) x,(double) y,
5177  methods[primitive_info->method]);
5178  return;
5179  }
5180  case ColorPrimitive:
5181  {
5182  (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5183  "ColorPrimitive %.20g,%.20g %s",(double) x,(double) y,
5184  methods[primitive_info->method]);
5185  return;
5186  }
5187  case MattePrimitive:
5188  {
5189  (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5190  "MattePrimitive %.20g,%.20g %s",(double) x,(double) y,
5191  methods[primitive_info->method]);
5192  return;
5193  }
5194  case TextPrimitive:
5195  {
5196  (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5197  "TextPrimitive %.20g,%.20g",(double) x,(double) y);
5198  return;
5199  }
5200  case ImagePrimitive:
5201  {
5202  (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5203  "ImagePrimitive %.20g,%.20g",(double) x,(double) y);
5204  return;
5205  }
5206  default:
5207  break;
5208  }
5209  coordinates=0;
5210  p=primitive_info[0].point;
5211  q.x=(-1.0);
5212  q.y=(-1.0);
5213  for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++)
5214  {
5215  point=primitive_info[i].point;
5216  if (coordinates <= 0)
5217  {
5218  coordinates=(ssize_t) primitive_info[i].coordinates;
5219  (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5220  " begin open (%.20g)",(double) coordinates);
5221  p=point;
5222  }
5223  point=primitive_info[i].point;
5224  if ((fabs(q.x-point.x) >= MagickEpsilon) ||
5225  (fabs(q.y-point.y) >= MagickEpsilon))
5226  (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5227  " %.20g: %.18g,%.18g",(double) coordinates,point.x,point.y);
5228  else
5229  (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5230  " %.20g: %g %g (duplicate)",(double) coordinates,point.x,point.y);
5231  q=point;
5232  coordinates--;
5233  if (coordinates > 0)
5234  continue;
5235  if ((fabs(p.x-point.x) >= MagickEpsilon) ||
5236  (fabs(p.y-point.y) >= MagickEpsilon))
5237  (void) LogMagickEvent(DrawEvent,GetMagickModule()," end last (%.20g)",
5238  (double) coordinates);
5239  else
5240  (void) LogMagickEvent(DrawEvent,GetMagickModule()," end open (%.20g)",
5241  (double) coordinates);
5242  }
5243 }
5244 
5245 MagickExport MagickBooleanType DrawPrimitive(Image *image,
5246  const DrawInfo *draw_info,const PrimitiveInfo *primitive_info)
5247 {
5248  CacheView
5249  *image_view;
5250 
5252  *exception;
5253 
5254  MagickStatusType
5255  status;
5256 
5257  ssize_t
5258  i,
5259  x;
5260 
5261  ssize_t
5262  y;
5263 
5264  if (draw_info->debug != MagickFalse)
5265  {
5266  (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5267  " begin draw-primitive");
5268  (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5269  " affine: %g,%g,%g,%g,%g,%g",draw_info->affine.sx,
5270  draw_info->affine.rx,draw_info->affine.ry,draw_info->affine.sy,
5271  draw_info->affine.tx,draw_info->affine.ty);
5272  }
5273  exception=(&image->exception);
5274  status=MagickTrue;
5275  if ((IsGrayColorspace(image->colorspace) != MagickFalse) &&
5276  ((IsPixelGray(&draw_info->fill) == MagickFalse) ||
5277  (IsPixelGray(&draw_info->stroke) == MagickFalse)))
5278  status=SetImageColorspace(image,sRGBColorspace);
5279  if (draw_info->compliance == SVGCompliance)
5280  {
5281  status&=SetImageClipMask(image,draw_info->clipping_mask);
5282  status&=SetImageMask(image,draw_info->composite_mask);
5283  }
5284  x=CastDoubleToLong(ceil(primitive_info->point.x-0.5));
5285  y=CastDoubleToLong(ceil(primitive_info->point.y-0.5));
5286  image_view=AcquireAuthenticCacheView(image,exception);
5287  switch (primitive_info->primitive)
5288  {
5289  case ColorPrimitive:
5290  {
5291  switch (primitive_info->method)
5292  {
5293  case PointMethod:
5294  default:
5295  {
5296  PixelPacket
5297  *q;
5298 
5299  q=GetCacheViewAuthenticPixels(image_view,x,y,1,1,exception);
5300  if (q == (PixelPacket *) NULL)
5301  break;
5302  (void) GetFillColor(draw_info,x,y,q);
5303  status&=SyncCacheViewAuthenticPixels(image_view,exception);
5304  break;
5305  }
5306  case ReplaceMethod:
5307  {
5308  PixelPacket
5309  target;
5310 
5311  status&=GetOneCacheViewVirtualPixel(image_view,x,y,&target,exception);
5312  for (y=0; y < (ssize_t) image->rows; y++)
5313  {
5314  PixelPacket
5315  *magick_restrict q;
5316 
5317  q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,
5318  exception);
5319  if (q == (PixelPacket *) NULL)
5320  break;
5321  for (x=0; x < (ssize_t) image->columns; x++)
5322  {
5323  if (IsColorSimilar(image,q,&target) == MagickFalse)
5324  {
5325  q++;
5326  continue;
5327  }
5328  (void) GetFillColor(draw_info,x,y,q);
5329  q++;
5330  }
5331  status&=SyncCacheViewAuthenticPixels(image_view,exception);
5332  if (status == MagickFalse)
5333  break;
5334  }
5335  break;
5336  }
5337  case FloodfillMethod:
5338  case FillToBorderMethod:
5339  {
5341  target;
5342 
5343  status&=GetOneVirtualMagickPixel(image,x,y,&target,exception);
5344  if (primitive_info->method == FillToBorderMethod)
5345  {
5346  target.red=(MagickRealType) draw_info->border_color.red;
5347  target.green=(MagickRealType) draw_info->border_color.green;
5348  target.blue=(MagickRealType) draw_info->border_color.blue;
5349  }
5350  status&=FloodfillPaintImage(image,DefaultChannels,draw_info,&target,x,
5351  y,primitive_info->method == FloodfillMethod ? MagickFalse :
5352  MagickTrue);
5353  break;
5354  }
5355  case ResetMethod:
5356  {
5357  for (y=0; y < (ssize_t) image->rows; y++)
5358  {
5359  PixelPacket
5360  *magick_restrict q;
5361 
5362  ssize_t
5363  x;
5364 
5365  q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,
5366  exception);
5367  if (q == (PixelPacket *) NULL)
5368  break;
5369  for (x=0; x < (ssize_t) image->columns; x++)
5370  {
5371  (void) GetFillColor(draw_info,x,y,q);
5372  q++;
5373  }
5374  status&=SyncCacheViewAuthenticPixels(image_view,exception);
5375  if (status == MagickFalse)
5376  break;
5377  }
5378  break;
5379  }
5380  }
5381  break;
5382  }
5383  case MattePrimitive:
5384  {
5385  if (image->matte == MagickFalse)
5386  status&=SetImageAlphaChannel(image,OpaqueAlphaChannel);
5387  switch (primitive_info->method)
5388  {
5389  case PointMethod:
5390  default:
5391  {
5392  PixelPacket
5393  pixel;
5394 
5395  PixelPacket
5396  *q;
5397 
5398  q=GetCacheViewAuthenticPixels(image_view,x,y,1,1,exception);
5399  if (q == (PixelPacket *) NULL)
5400  break;
5401  (void) GetFillColor(draw_info,x,y,&pixel);
5402  SetPixelOpacity(q,pixel.opacity);
5403  status&=SyncCacheViewAuthenticPixels(image_view,exception);
5404  break;
5405  }
5406  case ReplaceMethod:
5407  {
5408  PixelPacket
5409  pixel,
5410  target;
5411 
5412  status&=GetOneCacheViewVirtualPixel(image_view,x,y,&target,exception);
5413  for (y=0; y < (ssize_t) image->rows; y++)
5414  {
5415  PixelPacket
5416  *magick_restrict q;
5417 
5418  ssize_t
5419  x;
5420 
5421  q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,
5422  exception);
5423  if (q == (PixelPacket *) NULL)
5424  break;
5425  for (x=0; x < (ssize_t) image->columns; x++)
5426  {
5427  if (IsColorSimilar(image,q,&target) == MagickFalse)
5428  {
5429  q++;
5430  continue;
5431  }
5432  (void) GetFillColor(draw_info,x,y,&pixel);
5433  SetPixelOpacity(q,pixel.opacity);
5434  q++;
5435  }
5436  status&=SyncCacheViewAuthenticPixels(image_view,exception);
5437  if (status == MagickFalse)
5438  break;
5439  }
5440  break;
5441  }
5442  case FloodfillMethod:
5443  case FillToBorderMethod:
5444  {
5446  target;
5447 
5448  status&=GetOneVirtualMagickPixel(image,x,y,&target,exception);
5449  if (primitive_info->method == FillToBorderMethod)
5450  {
5451  target.red=(MagickRealType) draw_info->border_color.red;
5452  target.green=(MagickRealType) draw_info->border_color.green;
5453  target.blue=(MagickRealType) draw_info->border_color.blue;
5454  }
5455  status&=FloodfillPaintImage(image,OpacityChannel,draw_info,&target,x,
5456  y,primitive_info->method == FloodfillMethod ? MagickFalse :
5457  MagickTrue);
5458  break;
5459  }
5460  case ResetMethod:
5461  {
5462  PixelPacket
5463  pixel;
5464 
5465  for (y=0; y < (ssize_t) image->rows; y++)
5466  {
5467  PixelPacket
5468  *magick_restrict q;
5469 
5470  ssize_t
5471  x;
5472 
5473  q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,
5474  exception);
5475  if (q == (PixelPacket *) NULL)
5476  break;
5477  for (x=0; x < (ssize_t) image->columns; x++)
5478  {
5479  (void) GetFillColor(draw_info,x,y,&pixel);
5480  SetPixelOpacity(q,pixel.opacity);
5481  q++;
5482  }
5483  status&=SyncCacheViewAuthenticPixels(image_view,exception);
5484  if (status == MagickFalse)
5485  break;
5486  }
5487  break;
5488  }
5489  }
5490  break;
5491  }
5492  case ImagePrimitive:
5493  {
5494  AffineMatrix
5495  affine;
5496 
5497  char
5498  composite_geometry[MaxTextExtent];
5499 
5500  Image
5501  *composite_image,
5502  *composite_images;
5503 
5504  ImageInfo
5505  *clone_info;
5506 
5508  geometry;
5509 
5510  ssize_t
5511  x1,
5512  y1;
5513 
5514  if (primitive_info->text == (char *) NULL)
5515  break;
5516  clone_info=AcquireImageInfo();
5517  composite_images=(Image *) NULL;
5518  if (LocaleNCompare(primitive_info->text,"data:",5) == 0)
5519  composite_images=ReadInlineImage(clone_info,primitive_info->text,
5520  &image->exception);
5521  else
5522  if (*primitive_info->text != '\0')
5523  {
5524  const MagickInfo
5525  *magick_info;
5526 
5527  MagickStatusType
5528  path_status;
5529 
5530  struct stat
5531  attributes;
5532 
5533  /*
5534  Read composite image.
5535  */
5536  (void) CopyMagickString(clone_info->filename,primitive_info->text,
5537  MagickPathExtent);
5538  (void) SetImageInfo(clone_info,1,exception);
5539  magick_info=GetMagickInfo(clone_info->magick,exception);
5540  if ((magick_info != (const MagickInfo*) NULL) &&
5541  (LocaleCompare(magick_info->magick_module,"SVG") == 0))
5542  {
5543  (void) ThrowMagickException(exception,GetMagickModule(),
5544  CorruptImageError,"ImageTypeNotSupported","`%s'",
5545  clone_info->filename);
5546  clone_info=DestroyImageInfo(clone_info);
5547  break;
5548  }
5549  (void) CopyMagickString(clone_info->filename,primitive_info->text,
5550  MagickPathExtent);
5551  if (clone_info->size != (char *) NULL)
5552  clone_info->size=DestroyString(clone_info->size);
5553  if (clone_info->extract != (char *) NULL)
5554  clone_info->extract=DestroyString(clone_info->extract);
5555  path_status=GetPathAttributes(clone_info->filename,&attributes);
5556  if (path_status != MagickFalse)
5557  {
5558  if (S_ISCHR(attributes.st_mode) == 0)
5559  composite_images=ReadImage(clone_info,exception);
5560  else
5561  (void) ThrowMagickException(exception,GetMagickModule(),
5562  FileOpenError,"UnableToOpenFile","`%s'",
5563  clone_info->filename);
5564  }
5565  else
5566  if ((LocaleCompare(clone_info->magick,"ftp") != 0) &&
5567  (LocaleCompare(clone_info->magick,"http") != 0) &&
5568  (LocaleCompare(clone_info->magick,"https") != 0) &&
5569  (LocaleCompare(clone_info->magick,"vid") != 0))
5570  composite_images=ReadImage(clone_info,exception);
5571  else
5572  (void) ThrowMagickException(exception,GetMagickModule(),
5573  FileOpenError,"UnableToOpenFile","`%s'",clone_info->filename);
5574  }
5575  clone_info=DestroyImageInfo(clone_info);
5576  if (composite_images == (Image *) NULL)
5577  {
5578  status=0;
5579  break;
5580  }
5581  composite_image=RemoveFirstImageFromList(&composite_images);
5582  composite_images=DestroyImageList(composite_images);
5583  (void) SetImageProgressMonitor(composite_image,(MagickProgressMonitor)
5584  NULL,(void *) NULL);
5585  x1=CastDoubleToLong(ceil(primitive_info[1].point.x-0.5));
5586  y1=CastDoubleToLong(ceil(primitive_info[1].point.y-0.5));
5587  if (((x1 != 0L) && (x1 != (ssize_t) composite_image->columns)) ||
5588  ((y1 != 0L) && (y1 != (ssize_t) composite_image->rows)))
5589  {
5590  char
5591  geometry[MaxTextExtent];
5592 
5593  /*
5594  Resize image.
5595  */
5596  (void) FormatLocaleString(geometry,MaxTextExtent,"%gx%g!",
5597  primitive_info[1].point.x,primitive_info[1].point.y);
5598  composite_image->filter=image->filter;
5599  status&=TransformImage(&composite_image,(char *) NULL,geometry);
5600  }
5601  if (composite_image->matte == MagickFalse)
5602  status&=SetImageAlphaChannel(composite_image,OpaqueAlphaChannel);
5603  if (draw_info->opacity != OpaqueOpacity)
5604  status&=SetImageOpacity(composite_image,draw_info->opacity);
5605  SetGeometry(image,&geometry);
5606  image->gravity=draw_info->gravity;
5607  geometry.x=x;
5608  geometry.y=y;
5609  (void) FormatLocaleString(composite_geometry,MaxTextExtent,
5610  "%.20gx%.20g%+.20g%+.20g",(double) composite_image->columns,(double)
5611  composite_image->rows,(double) geometry.x,(double) geometry.y);
5612  (void) ParseGravityGeometry(image,composite_geometry,&geometry,
5613  &image->exception);
5614  affine=draw_info->affine;
5615  affine.tx=(double) geometry.x;
5616  affine.ty=(double) geometry.y;
5617  composite_image->interpolate=image->interpolate;
5618  if ((draw_info->compose == OverCompositeOp) ||
5619  (draw_info->compose == SrcOverCompositeOp))
5620  status&=DrawAffineImage(image,composite_image,&affine);
5621  else
5622  status&=CompositeImage(image,draw_info->compose,composite_image,
5623  geometry.x,geometry.y);
5624  composite_image=DestroyImage(composite_image);
5625  break;
5626  }
5627  case PointPrimitive:
5628  {
5629  PixelPacket
5630  fill_color;
5631 
5632  PixelPacket
5633  *q;
5634 
5635  if ((y < 0) || (y >= (ssize_t) image->rows))
5636  break;
5637  if ((x < 0) || (x >= (ssize_t) image->columns))
5638  break;
5639  q=GetCacheViewAuthenticPixels(image_view,x,y,1,1,exception);
5640  if (q == (PixelPacket *) NULL)
5641  break;
5642  (void) GetFillColor(draw_info,x,y,&fill_color);
5643  MagickCompositeOver(&fill_color,(MagickRealType) fill_color.opacity,q,
5644  (MagickRealType) q->opacity,q);
5645  status&=SyncCacheViewAuthenticPixels(image_view,exception);
5646  break;
5647  }
5648  case TextPrimitive:
5649  {
5650  char
5651  geometry[MaxTextExtent];
5652 
5653  DrawInfo
5654  *clone_info;
5655 
5656  if (primitive_info->text == (char *) NULL)
5657  break;
5658  clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
5659  (void) CloneString(&clone_info->text,primitive_info->text);
5660  (void) FormatLocaleString(geometry,MaxTextExtent,"%+f%+f",
5661  primitive_info->point.x,primitive_info->point.y);
5662  (void) CloneString(&clone_info->geometry,geometry);
5663  status&=AnnotateImage(image,clone_info);
5664  clone_info=DestroyDrawInfo(clone_info);
5665  break;
5666  }
5667  default:
5668  {
5669  double
5670  mid,
5671  scale;
5672 
5673  DrawInfo
5674  *clone_info;
5675 
5676  if (IsEventLogging() != MagickFalse)
5677  LogPrimitiveInfo(primitive_info);
5678  scale=ExpandAffine(&draw_info->affine);
5679  if ((draw_info->dash_pattern != (double *) NULL) &&
5680  (fabs(draw_info->dash_pattern[0]) >= MagickEpsilon) &&
5681  (fabs(scale*draw_info->stroke_width) >= MagickEpsilon) &&
5682  (draw_info->stroke.opacity != (Quantum) TransparentOpacity))
5683  {
5684  /*
5685  Draw dash polygon.
5686  */
5687  clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
5688  clone_info->stroke_width=0.0;
5689  clone_info->stroke.opacity=(Quantum) TransparentOpacity;
5690  status&=DrawPolygonPrimitive(image,clone_info,primitive_info);
5691  clone_info=DestroyDrawInfo(clone_info);
5692  if (status != MagickFalse)
5693  status&=DrawDashPolygon(draw_info,primitive_info,image);
5694  break;
5695  }
5696  mid=ExpandAffine(&draw_info->affine)*draw_info->stroke_width/2.0;
5697  if ((mid > 1.0) &&
5698  ((draw_info->stroke.opacity != (Quantum) TransparentOpacity) ||
5699  (draw_info->stroke_pattern != (Image *) NULL)))
5700  {
5701  double
5702  x,
5703  y;
5704 
5705  MagickBooleanType
5706  closed_path;
5707 
5708  /*
5709  Draw strokes while respecting line cap/join attributes.
5710  */
5711  closed_path=primitive_info[0].closed_subpath;
5712  i=(ssize_t) primitive_info[0].coordinates;
5713  x=fabs(primitive_info[i-1].point.x-primitive_info[0].point.x);
5714  y=fabs(primitive_info[i-1].point.y-primitive_info[0].point.y);
5715  if ((x < MagickEpsilon) && (y < MagickEpsilon))
5716  closed_path=MagickTrue;
5717  if ((((draw_info->linecap == RoundCap) ||
5718  (closed_path != MagickFalse)) &&
5719  (draw_info->linejoin == RoundJoin)) ||
5720  (primitive_info[i].primitive != UndefinedPrimitive))
5721  {
5722  status&=DrawPolygonPrimitive(image,draw_info,primitive_info);
5723  break;
5724  }
5725  clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
5726  clone_info->stroke_width=0.0;
5727  clone_info->stroke.opacity=(Quantum) TransparentOpacity;
5728  status&=DrawPolygonPrimitive(image,clone_info,primitive_info);
5729  clone_info=DestroyDrawInfo(clone_info);
5730  if (status != MagickFalse)
5731  status&=DrawStrokePolygon(image,draw_info,primitive_info);
5732  break;
5733  }
5734  status&=DrawPolygonPrimitive(image,draw_info,primitive_info);
5735  break;
5736  }
5737  }
5738  image_view=DestroyCacheView(image_view);
5739  if (draw_info->compliance == SVGCompliance)
5740  {
5741  status&=SetImageClipMask(image,(Image *) NULL);
5742  status&=SetImageMask(image,(Image *) NULL);
5743  }
5744  if (draw_info->debug != MagickFalse)
5745  (void) LogMagickEvent(DrawEvent,GetMagickModule()," end draw-primitive");
5746  return(status != 0 ? MagickTrue : MagickFalse);
5747 }
5748 ␌
5749 /*
5750 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5751 % %
5752 % %
5753 % %
5754 + D r a w S t r o k e P o l y g o n %
5755 % %
5756 % %
5757 % %
5758 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5759 %
5760 % DrawStrokePolygon() draws a stroked polygon (line, rectangle, ellipse) on
5761 % the image while respecting the line cap and join attributes.
5762 %
5763 % The format of the DrawStrokePolygon method is:
5764 %
5765 % MagickBooleanType DrawStrokePolygon(Image *image,
5766 % const DrawInfo *draw_info,const PrimitiveInfo *primitive_info)
5767 %
5768 % A description of each parameter follows:
5769 %
5770 % o image: the image.
5771 %
5772 % o draw_info: the draw info.
5773 %
5774 % o primitive_info: Specifies a pointer to a PrimitiveInfo structure.
5775 %
5776 %
5777 */
5778 
5779 static MagickBooleanType DrawRoundLinecap(Image *image,
5780  const DrawInfo *draw_info,const PrimitiveInfo *primitive_info)
5781 {
5783  linecap[5];
5784 
5785  ssize_t
5786  i;
5787 
5788  for (i=0; i < 4; i++)
5789  linecap[i]=(*primitive_info);
5790  linecap[0].coordinates=4;
5791  linecap[1].point.x+=2.0*MagickEpsilon;
5792  linecap[2].point.x+=2.0*MagickEpsilon;
5793  linecap[2].point.y+=2.0*MagickEpsilon;
5794  linecap[3].point.y+=2.0*MagickEpsilon;
5795  linecap[4].primitive=UndefinedPrimitive;
5796  return(DrawPolygonPrimitive(image,draw_info,linecap));
5797 }
5798 
5799 static MagickBooleanType DrawStrokePolygon(Image *image,
5800  const DrawInfo *draw_info,const PrimitiveInfo *primitive_info)
5801 {
5802  DrawInfo
5803  *clone_info;
5804 
5805  MagickBooleanType
5806  closed_path;
5807 
5808  MagickStatusType
5809  status;
5810 
5812  *stroke_polygon;
5813 
5814  const PrimitiveInfo
5815  *p,
5816  *q;
5817 
5818  /*
5819  Draw stroked polygon.
5820  */
5821  if (draw_info->debug != MagickFalse)
5822  (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5823  " begin draw-stroke-polygon");
5824  clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
5825  clone_info->fill=draw_info->stroke;
5826  if (clone_info->fill_pattern != (Image *) NULL)
5827  clone_info->fill_pattern=DestroyImage(clone_info->fill_pattern);
5828  if (clone_info->stroke_pattern != (Image *) NULL)
5829  clone_info->fill_pattern=CloneImage(clone_info->stroke_pattern,0,0,
5830  MagickTrue,&clone_info->stroke_pattern->exception);
5831  clone_info->stroke.opacity=(Quantum) TransparentOpacity;
5832  clone_info->stroke_width=0.0;
5833  clone_info->fill_rule=NonZeroRule;
5834  status=MagickTrue;
5835  for (p=primitive_info; p->primitive != UndefinedPrimitive; p+=p->coordinates)
5836  {
5837  if (p->coordinates == 1)
5838  continue;
5839  stroke_polygon=TraceStrokePolygon(draw_info,p,&image->exception);
5840  if (stroke_polygon == (PrimitiveInfo *) NULL)
5841  {
5842  status=0;
5843  break;
5844  }
5845  status&=DrawPolygonPrimitive(image,clone_info,stroke_polygon);
5846  stroke_polygon=(PrimitiveInfo *) RelinquishMagickMemory(stroke_polygon);
5847  if (status == 0)
5848  break;
5849  q=p+p->coordinates-1;
5850  closed_path=p->closed_subpath;
5851  if ((draw_info->linecap == RoundCap) && (closed_path == MagickFalse))
5852  {
5853  status&=DrawRoundLinecap(image,draw_info,p);
5854  status&=DrawRoundLinecap(image,draw_info,q);
5855  }
5856  }
5857  clone_info=DestroyDrawInfo(clone_info);
5858  if (draw_info->debug != MagickFalse)
5859  (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5860  " end draw-stroke-polygon");
5861  return(status != 0 ? MagickTrue : MagickFalse);
5862 }
5863 ␌
5864 /*
5865 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5866 % %
5867 % %
5868 % %
5869 % G e t A f f i n e M a t r i x %
5870 % %
5871 % %
5872 % %
5873 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5874 %
5875 % GetAffineMatrix() returns an AffineMatrix initialized to the identity
5876 % matrix.
5877 %
5878 % The format of the GetAffineMatrix method is:
5879 %
5880 % void GetAffineMatrix(AffineMatrix *affine_matrix)
5881 %
5882 % A description of each parameter follows:
5883 %
5884 % o affine_matrix: the affine matrix.
5885 %
5886 */
5887 MagickExport void GetAffineMatrix(AffineMatrix *affine_matrix)
5888 {
5889  assert(affine_matrix != (AffineMatrix *) NULL);
5890  if (IsEventLogging() != MagickFalse)
5891  (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
5892  (void) memset(affine_matrix,0,sizeof(*affine_matrix));
5893  affine_matrix->sx=1.0;
5894  affine_matrix->sy=1.0;
5895 }
5896 ␌
5897 /*
5898 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5899 % %
5900 % %
5901 % %
5902 + G e t D r a w I n f o %
5903 % %
5904 % %
5905 % %
5906 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5907 %
5908 % GetDrawInfo() initializes draw_info to default values from image_info.
5909 %
5910 % The format of the GetDrawInfo method is:
5911 %
5912 % void GetDrawInfo(const ImageInfo *image_info,DrawInfo *draw_info)
5913 %
5914 % A description of each parameter follows:
5915 %
5916 % o image_info: the image info..
5917 %
5918 % o draw_info: the draw info.
5919 %
5920 */
5921 MagickExport void GetDrawInfo(const ImageInfo *image_info,DrawInfo *draw_info)
5922 {
5923  char
5924  *next_token;
5925 
5926  const char
5927  *option;
5928 
5930  *exception;
5931 
5932  /*
5933  Initialize draw attributes.
5934  */
5935  assert(draw_info != (DrawInfo *) NULL);
5936  if (IsEventLogging() != MagickFalse)
5937  (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
5938  (void) memset(draw_info,0,sizeof(*draw_info));
5939  draw_info->image_info=CloneImageInfo(image_info);
5940  GetAffineMatrix(&draw_info->affine);
5941  exception=AcquireExceptionInfo();
5942  (void) QueryColorDatabase("#000F",&draw_info->fill,exception);
5943  (void) QueryColorDatabase("#FFF0",&draw_info->stroke,exception);
5944  draw_info->stroke_antialias=draw_info->image_info->antialias;
5945  draw_info->stroke_width=1.0;
5946  draw_info->fill_rule=EvenOddRule;
5947  draw_info->opacity=OpaqueOpacity;
5948  draw_info->fill_opacity=OpaqueOpacity;
5949  draw_info->stroke_opacity=OpaqueOpacity;
5950  draw_info->linecap=ButtCap;
5951  draw_info->linejoin=MiterJoin;
5952  draw_info->miterlimit=10;
5953  draw_info->decorate=NoDecoration;
5954  if (draw_info->image_info->font != (char *) NULL)
5955  draw_info->font=AcquireString(draw_info->image_info->font);
5956  if (draw_info->image_info->density != (char *) NULL)
5957  draw_info->density=AcquireString(draw_info->image_info->density);
5958  draw_info->text_antialias=draw_info->image_info->antialias;
5959  draw_info->pointsize=12.0;
5960  if (fabs(draw_info->image_info->pointsize) >= MagickEpsilon)
5961  draw_info->pointsize=draw_info->image_info->pointsize;
5962  draw_info->undercolor.opacity=(Quantum) TransparentOpacity;
5963  draw_info->border_color=draw_info->image_info->border_color;
5964  draw_info->compose=OverCompositeOp;
5965  if (draw_info->image_info->server_name != (char *) NULL)
5966  draw_info->server_name=AcquireString(draw_info->image_info->server_name);
5967  draw_info->render=MagickTrue;
5968  draw_info->clip_path=MagickFalse;
5969  draw_info->debug=(GetLogEventMask() & (DrawEvent | AnnotateEvent)) != 0 ?
5970  MagickTrue : MagickFalse;
5971  option=GetImageOption(draw_info->image_info,"direction");
5972  if (option != (const char *) NULL)
5973  draw_info->direction=(DirectionType) ParseCommandOption(
5974  MagickDirectionOptions,MagickFalse,option);
5975  else
5976  draw_info->direction=UndefinedDirection;
5977  option=GetImageOption(draw_info->image_info,"encoding");
5978  if (option != (const char *) NULL)
5979  (void) CloneString(&draw_info->encoding,option);
5980  option=GetImageOption(draw_info->image_info,"family");
5981  if (option != (const char *) NULL)
5982  (void) CloneString(&draw_info->family,option);
5983  option=GetImageOption(draw_info->image_info,"fill");
5984  if (option != (const char *) NULL)
5985  (void) QueryColorDatabase(option,&draw_info->fill,exception);
5986  option=GetImageOption(draw_info->image_info,"gravity");
5987  if (option != (const char *) NULL)
5988  draw_info->gravity=(GravityType) ParseCommandOption(MagickGravityOptions,
5989  MagickFalse,option);
5990  option=GetImageOption(draw_info->image_info,"interline-spacing");
5991  if (option != (const char *) NULL)
5992  draw_info->interline_spacing=GetDrawValue(option,&next_token);
5993  option=GetImageOption(draw_info->image_info,"interword-spacing");
5994  if (option != (const char *) NULL)
5995  draw_info->interword_spacing=GetDrawValue(option,&next_token);
5996  option=GetImageOption(draw_info->image_info,"kerning");
5997  if (option != (const char *) NULL)
5998  draw_info->kerning=GetDrawValue(option,&next_token);
5999  option=GetImageOption(draw_info->image_info,"stroke");
6000  if (option != (const char *) NULL)
6001  (void) QueryColorDatabase(option,&draw_info->stroke,exception);
6002  option=GetImageOption(draw_info->image_info,"strokewidth");
6003  if (option != (const char *) NULL)
6004  draw_info->stroke_width=GetDrawValue(option,&next_token);
6005  option=GetImageOption(draw_info->image_info,"style");
6006  if (option != (const char *) NULL)
6007  draw_info->style=(StyleType) ParseCommandOption(MagickStyleOptions,
6008  MagickFalse,option);
6009  option=GetImageOption(draw_info->image_info,"undercolor");
6010  if (option != (const char *) NULL)
6011  (void) QueryColorDatabase(option,&draw_info->undercolor,exception);
6012  option=GetImageOption(draw_info->image_info,"weight");
6013  if (option != (const char *) NULL)
6014  {
6015  ssize_t
6016  weight;
6017 
6018  weight=ParseCommandOption(MagickWeightOptions,MagickFalse,option);
6019  if (weight == -1)
6020  weight=(ssize_t) StringToUnsignedLong(option);
6021  draw_info->weight=(size_t) weight;
6022  }
6023  exception=DestroyExceptionInfo(exception);
6024  draw_info->signature=MagickCoreSignature;
6025 }
6026 ␌
6027 /*
6028 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
6029 % %
6030 % %
6031 % %
6032 + P e r m u t a t e %
6033 % %
6034 % %
6035 % %
6036 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
6037 %
6038 % Permutate() returns the permutation of the (n,k).
6039 %
6040 % The format of the Permutate method is:
6041 %
6042 % void Permutate(ssize_t n,ssize_t k)
6043 %
6044 % A description of each parameter follows:
6045 %
6046 % o n:
6047 %
6048 % o k:
6049 %
6050 %
6051 */
6052 static inline double Permutate(const ssize_t n,const ssize_t k)
6053 {
6054  double
6055  r;
6056 
6057  ssize_t
6058  i;
6059 
6060  r=1.0;
6061  for (i=k+1; i <= n; i++)
6062  r*=i;
6063  for (i=1; i <= (n-k); i++)
6064  r/=i;
6065  return(r);
6066 }
6067 ␌
6068 /*
6069 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
6070 % %
6071 % %
6072 % %
6073 + T r a c e P r i m i t i v e %
6074 % %
6075 % %
6076 % %
6077 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
6078 %
6079 % TracePrimitive is a collection of methods for generating graphic
6080 % primitives such as arcs, ellipses, paths, etc.
6081 %
6082 */
6083 
6084 static MagickBooleanType TraceArc(MVGInfo *mvg_info,const PointInfo start,
6085  const PointInfo end,const PointInfo degrees)
6086 {
6087  PointInfo
6088  center,
6089  radius;
6090 
6091  center.x=0.5*(end.x+start.x);
6092  center.y=0.5*(end.y+start.y);
6093  radius.x=fabs(center.x-start.x);
6094  radius.y=fabs(center.y-start.y);
6095  return(TraceEllipse(mvg_info,center,radius,degrees));
6096 }
6097 
6098 static MagickBooleanType TraceArcPath(MVGInfo *mvg_info,const PointInfo start,
6099  const PointInfo end,const PointInfo arc,const double angle,
6100  const MagickBooleanType large_arc,const MagickBooleanType sweep)
6101 {
6102  double
6103  alpha,
6104  beta,
6105  delta,
6106  factor,
6107  gamma,
6108  theta;
6109 
6110  MagickStatusType
6111  status;
6112 
6113  PointInfo
6114  center,
6115  points[3],
6116  radii;
6117 
6118  double
6119  cosine,
6120  sine;
6121 
6123  *primitive_info;
6124 
6126  *p;
6127 
6128  ssize_t
6129  i;
6130 
6131  size_t
6132  arc_segments;
6133 
6134  ssize_t
6135  offset;
6136 
6137  offset=mvg_info->offset;
6138  primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6139  primitive_info->coordinates=0;
6140  if ((fabs(start.x-end.x) < MagickEpsilon) &&
6141  (fabs(start.y-end.y) < MagickEpsilon))
6142  return(TracePoint(primitive_info,end));
6143  radii.x=fabs(arc.x);
6144  radii.y=fabs(arc.y);
6145  if ((radii.x < MagickEpsilon) || (radii.y < MagickEpsilon))
6146  return(TraceLine(primitive_info,start,end));
6147  cosine=cos(DegreesToRadians(fmod((double) angle,360.0)));
6148  sine=sin(DegreesToRadians(fmod((double) angle,360.0)));
6149  center.x=(double) (cosine*(end.x-start.x)/2+sine*(end.y-start.y)/2);
6150  center.y=(double) (cosine*(end.y-start.y)/2-sine*(end.x-start.x)/2);
6151  delta=(center.x*center.x)/(radii.x*radii.x)+(center.y*center.y)/
6152  (radii.y*radii.y);
6153  if (delta < MagickEpsilon)
6154  return(TraceLine(primitive_info,start,end));
6155  if (delta > 1.0)
6156  {
6157  radii.x*=sqrt((double) delta);
6158  radii.y*=sqrt((double) delta);
6159  }
6160  points[0].x=(double) (cosine*start.x/radii.x+sine*start.y/radii.x);
6161  points[0].y=(double) (cosine*start.y/radii.y-sine*start.x/radii.y);
6162  points[1].x=(double) (cosine*end.x/radii.x+sine*end.y/radii.x);
6163  points[1].y=(double) (cosine*end.y/radii.y-sine*end.x/radii.y);
6164  alpha=points[1].x-points[0].x;
6165  beta=points[1].y-points[0].y;
6166  if (fabs(alpha*alpha+beta*beta) < MagickEpsilon)
6167  return(TraceLine(primitive_info,start,end));
6168  factor=PerceptibleReciprocal(alpha*alpha+beta*beta)-0.25;
6169  if (factor <= 0.0)
6170  factor=0.0;
6171  else
6172  {
6173  factor=sqrt((double) factor);
6174  if (sweep == large_arc)
6175  factor=(-factor);
6176  }
6177  center.x=(double) ((points[0].x+points[1].x)/2-factor*beta);
6178  center.y=(double) ((points[0].y+points[1].y)/2+factor*alpha);
6179  alpha=atan2(points[0].y-center.y,points[0].x-center.x);
6180  theta=atan2(points[1].y-center.y,points[1].x-center.x)-alpha;
6181  if ((theta < 0.0) && (sweep != MagickFalse))
6182  theta+=2.0*MagickPI;
6183  else
6184  if ((theta > 0.0) && (sweep == MagickFalse))
6185  theta-=2.0*MagickPI;
6186  arc_segments=(size_t) CastDoubleToLong(ceil(fabs((double) (theta/(0.5*
6187  MagickPI+MagickEpsilon)))));
6188  p=primitive_info;
6189  status=MagickTrue;
6190  for (i=0; i < (ssize_t) arc_segments; i++)
6191  {
6192  beta=0.5*((alpha+(i+1)*theta/arc_segments)-(alpha+i*theta/arc_segments));
6193  gamma=(8.0/3.0)*sin(fmod((double) (0.5*beta),DegreesToRadians(360.0)))*
6194  sin(fmod((double) (0.5*beta),DegreesToRadians(360.0)))/
6195  sin(fmod((double) beta,DegreesToRadians(360.0)));
6196  points[0].x=(double) (center.x+cos(fmod((double) (alpha+(double) i*theta/
6197  arc_segments),DegreesToRadians(360.0)))-gamma*sin(fmod((double) (alpha+
6198  (double) i*theta/arc_segments),DegreesToRadians(360.0))));
6199  points[0].y=(double) (center.y+sin(fmod((double) (alpha+(double) i*theta/
6200  arc_segments),DegreesToRadians(360.0)))+gamma*cos(fmod((double) (alpha+
6201  (double) i*theta/arc_segments),DegreesToRadians(360.0))));
6202  points[2].x=(double) (center.x+cos(fmod((double) (alpha+(double) (i+1)*
6203  theta/arc_segments),DegreesToRadians(360.0))));
6204  points[2].y=(double) (center.y+sin(fmod((double) (alpha+(double) (i+1)*
6205  theta/arc_segments),DegreesToRadians(360.0))));
6206  points[1].x=(double) (points[2].x+gamma*sin(fmod((double) (alpha+(double)
6207  (i+1)*theta/arc_segments),DegreesToRadians(360.0))));
6208  points[1].y=(double) (points[2].y-gamma*cos(fmod((double) (alpha+(double)
6209  (i+1)*theta/arc_segments),DegreesToRadians(360.0))));
6210  p->point.x=(p == primitive_info) ? start.x : (p-1)->point.x;
6211  p->point.y=(p == primitive_info) ? start.y : (p-1)->point.y;
6212  (p+1)->point.x=(double) (cosine*radii.x*points[0].x-sine*radii.y*
6213  points[0].y);
6214  (p+1)->point.y=(double) (sine*radii.x*points[0].x+cosine*radii.y*
6215  points[0].y);
6216  (p+2)->point.x=(double) (cosine*radii.x*points[1].x-sine*radii.y*
6217  points[1].y);
6218  (p+2)->point.y=(double) (sine*radii.x*points[1].x+cosine*radii.y*
6219  points[1].y);
6220  (p+3)->point.x=(double) (cosine*radii.x*points[2].x-sine*radii.y*
6221  points[2].y);
6222  (p+3)->point.y=(double) (sine*radii.x*points[2].x+cosine*radii.y*
6223  points[2].y);
6224  if (i == (ssize_t) (arc_segments-1))
6225  (p+3)->point=end;
6226  status&=TraceBezier(mvg_info,4);
6227  if (status == 0)
6228  break;
6229  p=(*mvg_info->primitive_info)+mvg_info->offset;
6230  mvg_info->offset+=p->coordinates;
6231  p+=p->coordinates;
6232  }
6233  if (status == 0)
6234  return(MagickFalse);
6235  mvg_info->offset=offset;
6236  primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6237  primitive_info->coordinates=(size_t) (p-primitive_info);
6238  primitive_info->closed_subpath=MagickFalse;
6239  for (i=0; i < (ssize_t) primitive_info->coordinates; i++)
6240  {
6241  p->primitive=primitive_info->primitive;
6242  p--;
6243  }
6244  return(MagickTrue);
6245 }
6246 
6247 static MagickBooleanType TraceBezier(MVGInfo *mvg_info,
6248  const size_t number_coordinates)
6249 {
6250  double
6251  alpha,
6252  *coefficients,
6253  weight;
6254 
6255  PointInfo
6256  end,
6257  point,
6258  *points;
6259 
6261  *primitive_info;
6262 
6264  *p;
6265 
6266  ssize_t
6267  i,
6268  j;
6269 
6270  size_t
6271  control_points,
6272  quantum;
6273 
6274  /*
6275  Allocate coefficients.
6276  */
6277  primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6278  quantum=number_coordinates;
6279  for (i=0; i < (ssize_t) number_coordinates; i++)
6280  {
6281  for (j=i+1; j < (ssize_t) number_coordinates; j++)
6282  {
6283  alpha=fabs(primitive_info[j].point.x-primitive_info[i].point.x);
6284  if (alpha > (double) MAGICK_SSIZE_MAX)
6285  {
6286  (void) ThrowMagickException(mvg_info->exception,GetMagickModule(),
6287  ResourceLimitError,"MemoryAllocationFailed","`%s'","");
6288  return(MagickFalse);
6289  }
6290  if (alpha > (double) quantum)
6291  quantum=(size_t) alpha;
6292  alpha=fabs(primitive_info[j].point.y-primitive_info[i].point.y);
6293  if (alpha > (double) MAGICK_SSIZE_MAX)
6294  {
6295  (void) ThrowMagickException(mvg_info->exception,GetMagickModule(),
6296  ResourceLimitError,"MemoryAllocationFailed","`%s'","");
6297  return(MagickFalse);
6298  }
6299  if (alpha > (double) quantum)
6300  quantum=(size_t) alpha;
6301  }
6302  }
6303  coefficients=(double *) AcquireQuantumMemory(number_coordinates,
6304  sizeof(*coefficients));
6305  quantum=MagickMin(quantum/number_coordinates,BezierQuantum);
6306  points=(PointInfo *) AcquireQuantumMemory(quantum,number_coordinates*
6307  sizeof(*points));
6308  if ((coefficients == (double *) NULL) || (points == (PointInfo *) NULL))
6309  {
6310  if (points != (PointInfo *) NULL)
6311  points=(PointInfo *) RelinquishMagickMemory(points);
6312  if (coefficients != (double *) NULL)
6313  coefficients=(double *) RelinquishMagickMemory(coefficients);
6314  (void) ThrowMagickException(mvg_info->exception,GetMagickModule(),
6315  ResourceLimitError,"MemoryAllocationFailed","`%s'","");
6316  return(MagickFalse);
6317  }
6318  control_points=quantum*number_coordinates;
6319  if (CheckPrimitiveExtent(mvg_info,(double) control_points+1) == MagickFalse)
6320  {
6321  points=(PointInfo *) RelinquishMagickMemory(points);
6322  coefficients=(double *) RelinquishMagickMemory(coefficients);
6323  return(MagickFalse);
6324  }
6325  primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6326  /*
6327  Compute bezier points.
6328  */
6329  end=primitive_info[number_coordinates-1].point;
6330  for (i=0; i < (ssize_t) number_coordinates; i++)
6331  coefficients[i]=Permutate((ssize_t) number_coordinates-1,i);
6332  weight=0.0;
6333  for (i=0; i < (ssize_t) control_points; i++)
6334  {
6335  p=primitive_info;
6336  point.x=0.0;
6337  point.y=0.0;
6338  alpha=pow((double) (1.0-weight),(double) number_coordinates-1.0);
6339  for (j=0; j < (ssize_t) number_coordinates; j++)
6340  {
6341  point.x+=alpha*coefficients[j]*p->point.x;
6342  point.y+=alpha*coefficients[j]*p->point.y;
6343  alpha*=weight/(1.0-weight);
6344  p++;
6345  }
6346  points[i]=point;
6347  weight+=1.0/control_points;
6348  }
6349  /*
6350  Bezier curves are just short segmented polys.
6351  */
6352  p=primitive_info;
6353  for (i=0; i < (ssize_t) control_points; i++)
6354  {
6355  if (TracePoint(p,points[i]) == MagickFalse)
6356  {
6357  points=(PointInfo *) RelinquishMagickMemory(points);
6358  coefficients=(double *) RelinquishMagickMemory(coefficients);
6359  return(MagickFalse);
6360  }
6361  p+=p->coordinates;
6362  }
6363  if (TracePoint(p,end) == MagickFalse)
6364  {
6365  points=(PointInfo *) RelinquishMagickMemory(points);
6366  coefficients=(double *) RelinquishMagickMemory(coefficients);
6367  return(MagickFalse);
6368  }
6369  p+=p->coordinates;
6370  primitive_info->coordinates=(size_t) (p-primitive_info);
6371  primitive_info->closed_subpath=MagickFalse;
6372  for (i=0; i < (ssize_t) primitive_info->coordinates; i++)
6373  {
6374  p->primitive=primitive_info->primitive;
6375  p--;
6376  }
6377  points=(PointInfo *) RelinquishMagickMemory(points);
6378  coefficients=(double *) RelinquishMagickMemory(coefficients);
6379  return(MagickTrue);
6380 }
6381 
6382 static MagickBooleanType TraceCircle(MVGInfo *mvg_info,const PointInfo start,
6383  const PointInfo end)
6384 {
6385  double
6386  alpha,
6387  beta,
6388  radius;
6389 
6390  PointInfo
6391  offset,
6392  degrees;
6393 
6394  alpha=end.x-start.x;
6395  beta=end.y-start.y;
6396  radius=hypot((double) alpha,(double) beta);
6397  offset.x=(double) radius;
6398  offset.y=(double) radius;
6399  degrees.x=0.0;
6400  degrees.y=360.0;
6401  return(TraceEllipse(mvg_info,start,offset,degrees));
6402 }
6403 
6404 static MagickBooleanType TraceEllipse(MVGInfo *mvg_info,const PointInfo center,
6405  const PointInfo radii,const PointInfo arc)
6406 {
6407  double
6408  coordinates,
6409  delta,
6410  step,
6411  x,
6412  y;
6413 
6414  PointInfo
6415  angle,
6416  point;
6417 
6419  *primitive_info;
6420 
6422  *p;
6423 
6424  ssize_t
6425  i;
6426 
6427  /*
6428  Ellipses are just short segmented polys.
6429  */
6430  primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6431  primitive_info->coordinates=0;
6432  if ((fabs(radii.x) < MagickEpsilon) || (fabs(radii.y) < MagickEpsilon))
6433  return(MagickTrue);
6434  delta=2.0*PerceptibleReciprocal(MagickMax(radii.x,radii.y));
6435  step=MagickPI/8.0;
6436  if ((delta >= 0.0) && (delta < (MagickPI/8.0)))
6437  step=MagickPI/4.0/(MagickPI*PerceptibleReciprocal(delta)/2.0);
6438  angle.x=DegreesToRadians(arc.x);
6439  y=arc.y;
6440  while (y < arc.x)
6441  y+=360.0;
6442  angle.y=DegreesToRadians(y);
6443  coordinates=ceil((angle.y-angle.x)/step+1.0);
6444  if (CheckPrimitiveExtent(mvg_info,coordinates+1) == MagickFalse)
6445  return(MagickFalse);
6446  i=0;
6447  primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6448  for (p=primitive_info; angle.x < angle.y; angle.x+=step)
6449  {
6450  point.x=cos(fmod(angle.x,DegreesToRadians(360.0)))*radii.x+center.x;
6451  point.y=sin(fmod(angle.x,DegreesToRadians(360.0)))*radii.y+center.y;
6452  if (i++ >= (ssize_t) coordinates)
6453  break;
6454  if (TracePoint(p,point) == MagickFalse)
6455  return(MagickFalse);
6456  p+=p->coordinates;
6457  }
6458  point.x=cos(fmod(angle.y,DegreesToRadians(360.0)))*radii.x+center.x;
6459  point.y=sin(fmod(angle.y,DegreesToRadians(360.0)))*radii.y+center.y;
6460  if (TracePoint(p,point) == MagickFalse)
6461  return(MagickFalse);
6462  p+=p->coordinates;
6463  primitive_info->coordinates=(size_t) (p-primitive_info);
6464  primitive_info->closed_subpath=MagickFalse;
6465  x=fabs(primitive_info[0].point.x-
6466  primitive_info[primitive_info->coordinates-1].point.x);
6467  y=fabs(primitive_info[0].point.y-
6468  primitive_info[primitive_info->coordinates-1].point.y);
6469  if ((x < MagickEpsilon) && (y < MagickEpsilon))
6470  primitive_info->closed_subpath=MagickTrue;
6471  for (i=0; i < (ssize_t) primitive_info->coordinates; i++)
6472  {
6473  p->primitive=primitive_info->primitive;
6474  p--;
6475  }
6476  return(MagickTrue);
6477 }
6478 
6479 static MagickBooleanType TraceLine(PrimitiveInfo *primitive_info,
6480  const PointInfo start,const PointInfo end)
6481 {
6482  if (TracePoint(primitive_info,start) == MagickFalse)
6483  return(MagickFalse);
6484  if (TracePoint(primitive_info+1,end) == MagickFalse)
6485  return(MagickFalse);
6486  (primitive_info+1)->primitive=primitive_info->primitive;
6487  primitive_info->coordinates=2;
6488  primitive_info->closed_subpath=MagickFalse;
6489  return(MagickTrue);
6490 }
6491 
6492 static ssize_t TracePath(Image *image,MVGInfo *mvg_info,const char *path)
6493 {
6494  char
6495  *next_token,
6496  token[MaxTextExtent] = "";
6497 
6498  const char
6499  *p;
6500 
6501  double
6502  x,
6503  y;
6504 
6505  int
6506  attribute,
6507  last_attribute;
6508 
6509  MagickStatusType
6510  status;
6511 
6512  PointInfo
6513  end = {0.0, 0.0},
6514  points[4] = { {0.0, 0.0}, {0.0, 0.0}, {0.0, 0.0}, {0.0, 0.0} },
6515  point = {0.0, 0.0},
6516  start = {0.0, 0.0};
6517 
6519  *primitive_info;
6520 
6521  PrimitiveType
6522  primitive_type;
6523 
6525  *q;
6526 
6527  ssize_t
6528  i;
6529 
6530  size_t
6531  number_coordinates,
6532  z_count;
6533 
6534  ssize_t
6535  subpath_offset;
6536 
6537  subpath_offset=mvg_info->offset;
6538  primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6539  status=MagickTrue;
6540  attribute=0;
6541  number_coordinates=0;
6542  z_count=0;
6543  *token='\0';
6544  primitive_type=primitive_info->primitive;
6545  q=primitive_info;
6546  for (p=path; *p != '\0'; )
6547  {
6548  if (status == MagickFalse)
6549  break;
6550  while (isspace((int) ((unsigned char) *p)) != 0)
6551  p++;
6552  if (*p == '\0')
6553  break;
6554  last_attribute=attribute;
6555  attribute=(int) (*p++);
6556  switch (attribute)
6557  {
6558  case 'a':
6559  case 'A':
6560  {
6561  double
6562  angle = 0.0;
6563 
6564  MagickBooleanType
6565  large_arc = MagickFalse,
6566  sweep = MagickFalse;
6567 
6568  PointInfo
6569  arc = {0.0, 0.0};
6570 
6571  /*
6572  Elliptical arc.
6573  */
6574  do
6575  {
6576  (void) GetNextToken(p,&p,MaxTextExtent,token);
6577  if (*token == ',')
6578  (void) GetNextToken(p,&p,MaxTextExtent,token);
6579  arc.x=GetDrawValue(token,&next_token);
6580  if (token == next_token)
6581  ThrowPointExpectedException(image,token);
6582  (void) GetNextToken(p,&p,MaxTextExtent,token);
6583  if (*token == ',')
6584  (void) GetNextToken(p,&p,MaxTextExtent,token);
6585  arc.y=GetDrawValue(token,&next_token);
6586  if (token == next_token)
6587  ThrowPointExpectedException(image,token);
6588  (void) GetNextToken(p,&p,MaxTextExtent,token);
6589  if (*token == ',')
6590  (void) GetNextToken(p,&p,MaxTextExtent,token);
6591  angle=GetDrawValue(token,&next_token);
6592  if (token == next_token)
6593  ThrowPointExpectedException(image,token);
6594  (void) GetNextToken(p,&p,MaxTextExtent,token);
6595  if (*token == ',')
6596  (void) GetNextToken(p,&p,MaxTextExtent,token);
6597  large_arc=StringToLong(token) != 0 ? MagickTrue : MagickFalse;
6598  (void) GetNextToken(p,&p,MaxTextExtent,token);
6599  if (*token == ',')
6600  (void) GetNextToken(p,&p,MaxTextExtent,token);
6601  sweep=StringToLong(token) != 0 ? MagickTrue : MagickFalse;
6602  if (*token == ',')
6603  (void) GetNextToken(p,&p,MaxTextExtent,token);
6604  (void) GetNextToken(p,&p,MaxTextExtent,token);
6605  if (*token == ',')
6606  (void) GetNextToken(p,&p,MaxTextExtent,token);
6607  x=GetDrawValue(token,&next_token);
6608  if (token == next_token)
6609  ThrowPointExpectedException(image,token);
6610  (void) GetNextToken(p,&p,MaxTextExtent,token);
6611  if (*token == ',')
6612  (void) GetNextToken(p,&p,MaxTextExtent,token);
6613  y=GetDrawValue(token,&next_token);
6614  if (token == next_token)
6615  ThrowPointExpectedException(image,token);
6616  end.x=(double) (attribute == (int) 'A' ? x : point.x+x);
6617  end.y=(double) (attribute == (int) 'A' ? y : point.y+y);
6618  status&=TraceArcPath(mvg_info,point,end,arc,angle,large_arc,sweep);
6619  q=(*mvg_info->primitive_info)+mvg_info->offset;
6620  mvg_info->offset+=q->coordinates;
6621  q+=q->coordinates;
6622  point=end;
6623  while (isspace((int) ((unsigned char) *p)) != 0)
6624  p++;
6625  if (*p == ',')
6626  p++;
6627  } while (IsPoint(p) != MagickFalse);
6628  break;
6629  }
6630  case 'c':
6631  case 'C':
6632  {
6633  /*
6634  Cubic Bézier curve.
6635  */
6636  do
6637  {
6638  points[0]=point;
6639  for (i=1; i < 4; i++)
6640  {
6641  (void) GetNextToken(p,&p,MaxTextExtent,token);
6642  if (*token == ',')
6643  (void) GetNextToken(p,&p,MaxTextExtent,token);
6644  x=GetDrawValue(token,&next_token);
6645  if (token == next_token)
6646  ThrowPointExpectedException(image,token);
6647  (void) GetNextToken(p,&p,MaxTextExtent,token);
6648  if (*token == ',')
6649  (void) GetNextToken(p,&p,MaxTextExtent,token);
6650  y=GetDrawValue(token,&next_token);
6651  if (token == next_token)
6652  ThrowPointExpectedException(image,token);
6653  end.x=(double) (attribute == (int) 'C' ? x : point.x+x);
6654  end.y=(double) (attribute == (int) 'C' ? y : point.y+y);
6655  points[i]=end;
6656  }
6657  for (i=0; i < 4; i++)
6658  (q+i)->point=points[i];
6659  if (TraceBezier(mvg_info,4) == MagickFalse)
6660  return(-1);
6661  q=(*mvg_info->primitive_info)+mvg_info->offset;
6662  mvg_info->offset+=q->coordinates;
6663  q+=q->coordinates;
6664  point=end;
6665  while (isspace((int) ((unsigned char) *p)) != 0)
6666  p++;
6667  if (*p == ',')
6668  p++;
6669  } while (IsPoint(p) != MagickFalse);
6670  break;
6671  }
6672  case 'H':
6673  case 'h':
6674  {
6675  do
6676  {
6677  (void) GetNextToken(p,&p,MaxTextExtent,token);
6678  if (*token == ',')
6679  (void) GetNextToken(p,&p,MaxTextExtent,token);
6680  x=GetDrawValue(token,&next_token);
6681  if (token == next_token)
6682  ThrowPointExpectedException(image,token);
6683  point.x=(double) (attribute == (int) 'H' ? x: point.x+x);
6684  if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
6685  return(-1);
6686  q=(*mvg_info->primitive_info)+mvg_info->offset;
6687  if (TracePoint(q,point) == MagickFalse)
6688  return(-1);
6689  mvg_info->offset+=q->coordinates;
6690  q+=q->coordinates;
6691  while (isspace((int) ((unsigned char) *p)) != 0)
6692  p++;
6693  if (*p == ',')
6694  p++;
6695  } while (IsPoint(p) != MagickFalse);
6696  break;
6697  }
6698  case 'l':
6699  case 'L':
6700  {
6701  /*
6702  Line to.
6703  */
6704  do
6705  {
6706  (void) GetNextToken(p,&p,MaxTextExtent,token);
6707  if (*token == ',')
6708  (void) GetNextToken(p,&p,MaxTextExtent,token);
6709  x=GetDrawValue(token,&next_token);
6710  if (token == next_token)
6711  ThrowPointExpectedException(image,token);
6712  (void) GetNextToken(p,&p,MaxTextExtent,token);
6713  if (*token == ',')
6714  (void) GetNextToken(p,&p,MaxTextExtent,token);
6715  y=GetDrawValue(token,&next_token);
6716  if (token == next_token)
6717  ThrowPointExpectedException(image,token);
6718  point.x=(double) (attribute == (int) 'L' ? x : point.x+x);
6719  point.y=(double) (attribute == (int) 'L' ? y : point.y+y);
6720  if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
6721  return(-1);
6722  q=(*mvg_info->primitive_info)+mvg_info->offset;
6723  if (TracePoint(q,point) == MagickFalse)
6724  return(-1);
6725  mvg_info->offset+=q->coordinates;
6726  q+=q->coordinates;
6727  while (isspace((int) ((unsigned char) *p)) != 0)
6728  p++;
6729  if (*p == ',')
6730  p++;
6731  } while (IsPoint(p) != MagickFalse);
6732  break;
6733  }
6734  case 'M':
6735  case 'm':
6736  {
6737  /*
6738  Move to.
6739  */
6740  if (mvg_info->offset != subpath_offset)
6741  {
6742  primitive_info=(*mvg_info->primitive_info)+subpath_offset;
6743  primitive_info->coordinates=(size_t) (q-primitive_info);
6744  number_coordinates+=primitive_info->coordinates;
6745  primitive_info=q;
6746  subpath_offset=mvg_info->offset;
6747  }
6748  i=0;
6749  do
6750  {
6751  (void) GetNextToken(p,&p,MaxTextExtent,token);
6752  if (*token == ',')
6753  (void) GetNextToken(p,&p,MaxTextExtent,token);
6754  x=GetDrawValue(token,&next_token);
6755  if (token == next_token)
6756  ThrowPointExpectedException(image,token);
6757  (void) GetNextToken(p,&p,MaxTextExtent,token);
6758  if (*token == ',')
6759  (void) GetNextToken(p,&p,MaxTextExtent,token);
6760  y=GetDrawValue(token,&next_token);
6761  if (token == next_token)
6762  ThrowPointExpectedException(image,token);
6763  point.x=(double) (attribute == (int) 'M' ? x : point.x+x);
6764  point.y=(double) (attribute == (int) 'M' ? y : point.y+y);
6765  if (i == 0)
6766  start=point;
6767  i++;
6768  if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
6769  return(-1);
6770  q=(*mvg_info->primitive_info)+mvg_info->offset;
6771  if (TracePoint(q,point) == MagickFalse)
6772  return(-1);
6773  mvg_info->offset+=q->coordinates;
6774  q+=q->coordinates;
6775  while (isspace((int) ((unsigned char) *p)) != 0)
6776  p++;
6777  if (*p == ',')
6778  p++;
6779  } while (IsPoint(p) != MagickFalse);
6780  break;
6781  }
6782  case 'q':
6783  case 'Q':
6784  {
6785  /*
6786  Quadratic Bézier curve.
6787  */
6788  do
6789  {
6790  points[0]=point;
6791  for (i=1; i < 3; i++)
6792  {
6793  (void) GetNextToken(p,&p,MaxTextExtent,token);
6794  if (*token == ',')
6795  (void) GetNextToken(p,&p,MaxTextExtent,token);
6796  x=GetDrawValue(token,&next_token);
6797  if (token == next_token)
6798  ThrowPointExpectedException(image,token);
6799  (void) GetNextToken(p,&p,MaxTextExtent,token);
6800  if (*token == ',')
6801  (void) GetNextToken(p,&p,MaxTextExtent,token);
6802  y=GetDrawValue(token,&next_token);
6803  if (token == next_token)
6804  ThrowPointExpectedException(image,token);
6805  if (*p == ',')
6806  p++;
6807  end.x=(double) (attribute == (int) 'Q' ? x : point.x+x);
6808  end.y=(double) (attribute == (int) 'Q' ? y : point.y+y);
6809  points[i]=end;
6810  }
6811  for (i=0; i < 3; i++)
6812  (q+i)->point=points[i];
6813  if (TraceBezier(mvg_info,3) == MagickFalse)
6814  return(-1);
6815  q=(*mvg_info->primitive_info)+mvg_info->offset;
6816  mvg_info->offset+=q->coordinates;
6817  q+=q->coordinates;
6818  point=end;
6819  while (isspace((int) ((unsigned char) *p)) != 0)
6820  p++;
6821  if (*p == ',')
6822  p++;
6823  } while (IsPoint(p) != MagickFalse);
6824  break;
6825  }
6826  case 's':
6827  case 'S':
6828  {
6829  /*
6830  Cubic Bézier curve.
6831  */
6832  do
6833  {
6834  points[0]=points[3];
6835  points[1].x=2.0*points[3].x-points[2].x;
6836  points[1].y=2.0*points[3].y-points[2].y;
6837  for (i=2; i < 4; i++)
6838  {
6839  (void) GetNextToken(p,&p,MaxTextExtent,token);
6840  if (*token == ',')
6841  (void) GetNextToken(p,&p,MaxTextExtent,token);
6842  x=GetDrawValue(token,&next_token);
6843  if (token == next_token)
6844  ThrowPointExpectedException(image,token);
6845  (void) GetNextToken(p,&p,MaxTextExtent,token);
6846  if (*token == ',')
6847  (void) GetNextToken(p,&p,MaxTextExtent,token);
6848  y=GetDrawValue(token,&next_token);
6849  if (token == next_token)
6850  ThrowPointExpectedException(image,token);
6851  if (*p == ',')
6852  p++;
6853  end.x=(double) (attribute == (int) 'S' ? x : point.x+x);
6854  end.y=(double) (attribute == (int) 'S' ? y : point.y+y);
6855  points[i]=end;
6856  }
6857  if (strchr("CcSs",last_attribute) == (char *) NULL)
6858  {
6859  points[0]=point;
6860  points[1]=point;
6861  }
6862  for (i=0; i < 4; i++)
6863  (q+i)->point=points[i];
6864  if (TraceBezier(mvg_info,4) == MagickFalse)
6865  return(-1);
6866  q=(*mvg_info->primitive_info)+mvg_info->offset;
6867  mvg_info->offset+=q->coordinates;
6868  q+=q->coordinates;
6869  point=end;
6870  last_attribute=attribute;
6871  while (isspace((int) ((unsigned char) *p)) != 0)
6872  p++;
6873  if (*p == ',')
6874  p++;
6875  } while (IsPoint(p) != MagickFalse);
6876  break;
6877  }
6878  case 't':
6879  case 'T':
6880  {
6881  /*
6882  Quadratic Bézier curve.
6883  */
6884  do
6885  {
6886  points[0]=points[2];
6887  points[1].x=2.0*points[2].x-points[1].x;
6888  points[1].y=2.0*points[2].y-points[1].y;
6889  for (i=2; i < 3; i++)
6890  {
6891  (void) GetNextToken(p,&p,MaxTextExtent,token);
6892  if (*token == ',')
6893  (void) GetNextToken(p,&p,MaxTextExtent,token);
6894  x=GetDrawValue(token,&next_token);
6895  if (token == next_token)
6896  ThrowPointExpectedException(image,token);
6897  (void) GetNextToken(p,&p,MaxTextExtent,token);
6898  if (*token == ',')
6899  (void) GetNextToken(p,&p,MaxTextExtent,token);
6900  y=GetDrawValue(token,&next_token);
6901  if (token == next_token)
6902  ThrowPointExpectedException(image,token);
6903  end.x=(double) (attribute == (int) 'T' ? x : point.x+x);
6904  end.y=(double) (attribute == (int) 'T' ? y : point.y+y);
6905  points[i]=end;
6906  }
6907  if (status == MagickFalse)
6908  break;
6909  if (strchr("QqTt",last_attribute) == (char *) NULL)
6910  {
6911  points[0]=point;
6912  points[1]=point;
6913  }
6914  for (i=0; i < 3; i++)
6915  (q+i)->point=points[i];
6916  if (TraceBezier(mvg_info,3) == MagickFalse)
6917  return(-1);
6918  q=(*mvg_info->primitive_info)+mvg_info->offset;
6919  mvg_info->offset+=q->coordinates;
6920  q+=q->coordinates;
6921  point=end;
6922  last_attribute=attribute;
6923  while (isspace((int) ((unsigned char) *p)) != 0)
6924  p++;
6925  if (*p == ',')
6926  p++;
6927  } while (IsPoint(p) != MagickFalse);
6928  break;
6929  }
6930  case 'v':
6931  case 'V':
6932  {
6933  /*
6934  Line to.
6935  */
6936  do
6937  {
6938  (void) GetNextToken(p,&p,MaxTextExtent,token);
6939  if (*token == ',')
6940  (void) GetNextToken(p,&p,MaxTextExtent,token);
6941  y=GetDrawValue(token,&next_token);
6942  if (token == next_token)
6943  ThrowPointExpectedException(image,token);
6944  point.y=(double) (attribute == (int) 'V' ? y : point.y+y);
6945  if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
6946  return(-1);
6947  q=(*mvg_info->primitive_info)+mvg_info->offset;
6948  if (TracePoint(q,point) == MagickFalse)
6949  return(-1);
6950  mvg_info->offset+=q->coordinates;
6951  q+=q->coordinates;
6952  while (isspace((int) ((unsigned char) *p)) != 0)
6953  p++;
6954  if (*p == ',')
6955  p++;
6956  } while (IsPoint(p) != MagickFalse);
6957  break;
6958  }
6959  case 'z':
6960  case 'Z':
6961  {
6962  /*
6963  Close path.
6964  */
6965  point=start;
6966  if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
6967  return(-1);
6968  q=(*mvg_info->primitive_info)+mvg_info->offset;
6969  if (TracePoint(q,point) == MagickFalse)
6970  return(-1);
6971  mvg_info->offset+=q->coordinates;
6972  q+=q->coordinates;
6973  primitive_info=(*mvg_info->primitive_info)+subpath_offset;
6974  primitive_info->coordinates=(size_t) (q-primitive_info);
6975  primitive_info->closed_subpath=MagickTrue;
6976  number_coordinates+=primitive_info->coordinates;
6977  primitive_info=q;
6978  subpath_offset=mvg_info->offset;
6979  z_count++;
6980  break;
6981  }
6982  default:
6983  {
6984  ThrowPointExpectedException(image,token);
6985  break;
6986  }
6987  }
6988  }
6989  if (status == MagickFalse)
6990  return(-1);
6991  primitive_info=(*mvg_info->primitive_info)+subpath_offset;
6992  primitive_info->coordinates=(size_t) (q-primitive_info);
6993  number_coordinates+=primitive_info->coordinates;
6994  for (i=0; i < (ssize_t) number_coordinates; i++)
6995  {
6996  q--;
6997  q->primitive=primitive_type;
6998  if (z_count > 1)
6999  q->method=FillToBorderMethod;
7000  }
7001  q=primitive_info;
7002  return((ssize_t) number_coordinates);
7003 }
7004 
7005 static MagickBooleanType TraceRectangle(PrimitiveInfo *primitive_info,
7006  const PointInfo start,const PointInfo end)
7007 {
7008  PointInfo
7009  point;
7010 
7012  *p;
7013 
7014  ssize_t
7015  i;
7016 
7017  p=primitive_info;
7018  if (TracePoint(p,start) == MagickFalse)
7019  return(MagickFalse);
7020  p+=p->coordinates;
7021  point.x=start.x;
7022  point.y=end.y;
7023  if (TracePoint(p,point) == MagickFalse)
7024  return(MagickFalse);
7025  p+=p->coordinates;
7026  if (TracePoint(p,end) == MagickFalse)
7027  return(MagickFalse);
7028  p+=p->coordinates;
7029  point.x=end.x;
7030  point.y=start.y;
7031  if (TracePoint(p,point) == MagickFalse)
7032  return(MagickFalse);
7033  p+=p->coordinates;
7034  if (TracePoint(p,start) == MagickFalse)
7035  return(MagickFalse);
7036  p+=p->coordinates;
7037  primitive_info->coordinates=(size_t) (p-primitive_info);
7038  primitive_info->closed_subpath=MagickTrue;
7039  for (i=0; i < (ssize_t) primitive_info->coordinates; i++)
7040  {
7041  p->primitive=primitive_info->primitive;
7042  p--;
7043  }
7044  return(MagickTrue);
7045 }
7046 
7047 static MagickBooleanType TraceRoundRectangle(MVGInfo *mvg_info,
7048  const PointInfo start,const PointInfo end,PointInfo arc)
7049 {
7050  PointInfo
7051  degrees,
7052  point,
7053  segment;
7054 
7056  *primitive_info;
7057 
7059  *p;
7060 
7061  ssize_t
7062  i;
7063 
7064  ssize_t
7065  offset;
7066 
7067  offset=mvg_info->offset;
7068  segment.x=fabs(end.x-start.x);
7069  segment.y=fabs(end.y-start.y);
7070  if ((segment.x < MagickEpsilon) || (segment.y < MagickEpsilon))
7071  {
7072  (*mvg_info->primitive_info+mvg_info->offset)->coordinates=0;
7073  return(MagickTrue);
7074  }
7075  if (arc.x > (0.5*segment.x))
7076  arc.x=0.5*segment.x;
7077  if (arc.y > (0.5*segment.y))
7078  arc.y=0.5*segment.y;
7079  point.x=start.x+segment.x-arc.x;
7080  point.y=start.y+arc.y;
7081  degrees.x=270.0;
7082  degrees.y=360.0;
7083  if (TraceEllipse(mvg_info,point,arc,degrees) == MagickFalse)
7084  return(MagickFalse);
7085  p=(*mvg_info->primitive_info)+mvg_info->offset;
7086  mvg_info->offset+=p->coordinates;
7087  point.x=start.x+segment.x-arc.x;
7088  point.y=start.y+segment.y-arc.y;
7089  degrees.x=0.0;
7090  degrees.y=90.0;
7091  if (TraceEllipse(mvg_info,point,arc,degrees) == MagickFalse)
7092  return(MagickFalse);
7093  p=(*mvg_info->primitive_info)+mvg_info->offset;
7094  mvg_info->offset+=p->coordinates;
7095  point.x=start.x+arc.x;
7096  point.y=start.y+segment.y-arc.y;
7097  degrees.x=90.0;
7098  degrees.y=180.0;
7099  if (TraceEllipse(mvg_info,point,arc,degrees) == MagickFalse)
7100  return(MagickFalse);
7101  p=(*mvg_info->primitive_info)+mvg_info->offset;
7102  mvg_info->offset+=p->coordinates;
7103  point.x=start.x+arc.x;
7104  point.y=start.y+arc.y;
7105  degrees.x=180.0;
7106  degrees.y=270.0;
7107  if (TraceEllipse(mvg_info,point,arc,degrees) == MagickFalse)
7108  return(MagickFalse);
7109  p=(*mvg_info->primitive_info)+mvg_info->offset;
7110  mvg_info->offset+=p->coordinates;
7111  if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
7112  return(MagickFalse);
7113  p=(*mvg_info->primitive_info)+mvg_info->offset;
7114  if (TracePoint(p,(*mvg_info->primitive_info+offset)->point) == MagickFalse)
7115  return(MagickFalse);
7116  p+=p->coordinates;
7117  mvg_info->offset=offset;
7118  primitive_info=(*mvg_info->primitive_info)+offset;
7119  primitive_info->coordinates=(size_t) (p-primitive_info);
7120  primitive_info->closed_subpath=MagickTrue;
7121  for (i=0; i < (ssize_t) primitive_info->coordinates; i++)
7122  {
7123  p->primitive=primitive_info->primitive;
7124  p--;
7125  }
7126  return(MagickTrue);
7127 }
7128 
7129 static MagickBooleanType TraceSquareLinecap(PrimitiveInfo *primitive_info,
7130  const size_t number_vertices,const double offset)
7131 {
7132  double
7133  distance;
7134 
7135  double
7136  dx,
7137  dy;
7138 
7139  ssize_t
7140  i;
7141 
7142  ssize_t
7143  j;
7144 
7145  dx=0.0;
7146  dy=0.0;
7147  for (i=1; i < (ssize_t) number_vertices; i++)
7148  {
7149  dx=primitive_info[0].point.x-primitive_info[i].point.x;
7150  dy=primitive_info[0].point.y-primitive_info[i].point.y;
7151  if ((fabs((double) dx) >= MagickEpsilon) ||
7152  (fabs((double) dy) >= MagickEpsilon))
7153  break;
7154  }
7155  if (i == (ssize_t) number_vertices)
7156  i=(ssize_t) number_vertices-1L;
7157  distance=hypot((double) dx,(double) dy);
7158  primitive_info[0].point.x=(double) (primitive_info[i].point.x+
7159  dx*(distance+offset)/distance);
7160  primitive_info[0].point.y=(double) (primitive_info[i].point.y+
7161  dy*(distance+offset)/distance);
7162  for (j=(ssize_t) number_vertices-2; j >= 0; j--)
7163  {
7164  dx=primitive_info[number_vertices-1].point.x-primitive_info[j].point.x;
7165  dy=primitive_info[number_vertices-1].point.y-primitive_info[j].point.y;
7166  if ((fabs((double) dx) >= MagickEpsilon) ||
7167  (fabs((double) dy) >= MagickEpsilon))
7168  break;
7169  }
7170  distance=hypot((double) dx,(double) dy);
7171  primitive_info[number_vertices-1].point.x=(double) (primitive_info[j].point.x+
7172  dx*(distance+offset)/distance);
7173  primitive_info[number_vertices-1].point.y=(double) (primitive_info[j].point.y+
7174  dy*(distance+offset)/distance);
7175  return(MagickTrue);
7176 }
7177 
7178 static PrimitiveInfo *TraceStrokePolygon(const DrawInfo *draw_info,
7179  const PrimitiveInfo *primitive_info,ExceptionInfo *exception)
7180 {
7181 #define MaxStrokePad (6*BezierQuantum+360)
7182 #define CheckPathExtent(pad_p,pad_q) \
7183 { \
7184  if ((pad_p) > MaxBezierCoordinates) \
7185  stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p); \
7186  else \
7187  if ((ssize_t) (p+(pad_p)) >= (ssize_t) extent_p) \
7188  { \
7189  if (~extent_p < (pad_p)) \
7190  stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p); \
7191  else \
7192  { \
7193  extent_p+=(pad_p); \
7194  stroke_p=(PointInfo *) ResizeQuantumMemory(stroke_p,extent_p+ \
7195  MaxStrokePad,sizeof(*stroke_p)); \
7196  } \
7197  } \
7198  if ((pad_q) > MaxBezierCoordinates) \
7199  stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q); \
7200  else \
7201  if ((ssize_t) (q+(pad_q)) >= (ssize_t) extent_q) \
7202  { \
7203  if (~extent_q < (pad_q)) \
7204  stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q); \
7205  else \
7206  { \
7207  extent_q+=(pad_q); \
7208  stroke_q=(PointInfo *) ResizeQuantumMemory(stroke_q,extent_q+ \
7209  MaxStrokePad,sizeof(*stroke_q)); \
7210  } \
7211  } \
7212  if ((stroke_p == (PointInfo *) NULL) || (stroke_q == (PointInfo *) NULL)) \
7213  { \
7214  if (stroke_p != (PointInfo *) NULL) \
7215  stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p); \
7216  if (stroke_q != (PointInfo *) NULL) \
7217  stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q); \
7218  polygon_primitive=(PrimitiveInfo *) \
7219  RelinquishMagickMemory(polygon_primitive); \
7220  (void) ThrowMagickException(exception,GetMagickModule(), \
7221  ResourceLimitError,"MemoryAllocationFailed","`%s'",""); \
7222  return((PrimitiveInfo *) NULL); \
7223  } \
7224 }
7225 
7226  typedef struct _StrokeSegment
7227  {
7228  double
7229  p,
7230  q;
7231  } StrokeSegment;
7232 
7233  double
7234  delta_theta,
7235  dot_product,
7236  mid,
7237  miterlimit;
7238 
7239  MagickBooleanType
7240  closed_path;
7241 
7242  PointInfo
7243  box_p[5],
7244  box_q[5],
7245  center,
7246  offset,
7247  *stroke_p,
7248  *stroke_q;
7249 
7251  *polygon_primitive,
7252  *stroke_polygon;
7253 
7254  ssize_t
7255  i;
7256 
7257  size_t
7258  arc_segments,
7259  extent_p,
7260  extent_q,
7261  number_vertices;
7262 
7263  ssize_t
7264  j,
7265  n,
7266  p,
7267  q;
7268 
7269  StrokeSegment
7270  dx = {0.0, 0.0},
7271  dy = {0.0, 0.0},
7272  inverse_slope = {0.0, 0.0},
7273  slope = {0.0, 0.0},
7274  theta = {0.0, 0.0};
7275 
7276  /*
7277  Allocate paths.
7278  */
7279  number_vertices=primitive_info->coordinates;
7280  polygon_primitive=(PrimitiveInfo *) AcquireQuantumMemory((size_t)
7281  number_vertices+2UL,sizeof(*polygon_primitive));
7282  if (polygon_primitive == (PrimitiveInfo *) NULL)
7283  {
7284  (void) ThrowMagickException(exception,GetMagickModule(),
7285  ResourceLimitError,"MemoryAllocationFailed","`%s'","");
7286  return((PrimitiveInfo *) NULL);
7287  }
7288  (void) memcpy(polygon_primitive,primitive_info,(size_t) number_vertices*
7289  sizeof(*polygon_primitive));
7290  offset.x=primitive_info[number_vertices-1].point.x-primitive_info[0].point.x;
7291  offset.y=primitive_info[number_vertices-1].point.y-primitive_info[0].point.y;
7292  closed_path=(fabs(offset.x) < MagickEpsilon) &&
7293  (fabs(offset.y) < MagickEpsilon) ? MagickTrue : MagickFalse;
7294  if (((draw_info->linejoin == RoundJoin) ||
7295  (draw_info->linejoin == MiterJoin)) && (closed_path != MagickFalse))
7296  {
7297  polygon_primitive[number_vertices]=primitive_info[1];
7298  number_vertices++;
7299  }
7300  polygon_primitive[number_vertices].primitive=UndefinedPrimitive;
7301  /*
7302  Compute the slope for the first line segment, p.
7303  */
7304  dx.p=0.0;
7305  dy.p=0.0;
7306  for (n=1; n < (ssize_t) number_vertices; n++)
7307  {
7308  dx.p=polygon_primitive[n].point.x-polygon_primitive[0].point.x;
7309  dy.p=polygon_primitive[n].point.y-polygon_primitive[0].point.y;
7310  if ((fabs(dx.p) >= MagickEpsilon) || (fabs(dy.p) >= MagickEpsilon))
7311  break;
7312  }
7313  if (n == (ssize_t) number_vertices)
7314  {
7315  if ((draw_info->linecap != RoundCap) || (closed_path != MagickFalse))
7316  {
7317  /*
7318  Zero length subpath.
7319  */
7320  stroke_polygon=(PrimitiveInfo *) AcquireCriticalMemory(
7321  sizeof(*stroke_polygon));
7322  stroke_polygon[0]=polygon_primitive[0];
7323  stroke_polygon[0].coordinates=0;
7324  polygon_primitive=(PrimitiveInfo *) RelinquishMagickMemory(
7325  polygon_primitive);
7326  return(stroke_polygon);
7327  }
7328  n=(ssize_t) number_vertices-1L;
7329  }
7330  extent_p=2*number_vertices;
7331  extent_q=2*number_vertices;
7332  stroke_p=(PointInfo *) AcquireQuantumMemory((size_t) extent_p+MaxStrokePad,
7333  sizeof(*stroke_p));
7334  stroke_q=(PointInfo *) AcquireQuantumMemory((size_t) extent_q+MaxStrokePad,
7335  sizeof(*stroke_q));
7336  if ((stroke_p == (PointInfo *) NULL) || (stroke_q == (PointInfo *) NULL))
7337  {
7338  if (stroke_p != (PointInfo *) NULL)
7339  stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p);
7340  if (stroke_q != (PointInfo *) NULL)
7341  stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q);
7342  polygon_primitive=(PrimitiveInfo *)
7343  RelinquishMagickMemory(polygon_primitive);
7344  (void) ThrowMagickException(exception,GetMagickModule(),
7345  ResourceLimitError,"MemoryAllocationFailed","`%s'","");
7346  return((PrimitiveInfo *) NULL);
7347  }
7348  slope.p=0.0;
7349  inverse_slope.p=0.0;
7350  if (fabs(dx.p) < MagickEpsilon)
7351  {
7352  if (dx.p >= 0.0)
7353  slope.p=dy.p < 0.0 ? -1.0/MagickEpsilon : 1.0/MagickEpsilon;
7354  else
7355  slope.p=dy.p < 0.0 ? 1.0/MagickEpsilon : -1.0/MagickEpsilon;
7356  }
7357  else
7358  if (fabs(dy.p) < MagickEpsilon)
7359  {
7360  if (dy.p >= 0.0)
7361  inverse_slope.p=dx.p < 0.0 ? -1.0/MagickEpsilon : 1.0/MagickEpsilon;
7362  else
7363  inverse_slope.p=dx.p < 0.0 ? 1.0/MagickEpsilon : -1.0/MagickEpsilon;
7364  }
7365  else
7366  {
7367  slope.p=dy.p/dx.p;
7368  inverse_slope.p=(-1.0*PerceptibleReciprocal(slope.p));
7369  }
7370  mid=ExpandAffine(&draw_info->affine)*draw_info->stroke_width/2.0;
7371  miterlimit=(double) (draw_info->miterlimit*draw_info->miterlimit*mid*mid);
7372  if ((draw_info->linecap == SquareCap) && (closed_path == MagickFalse))
7373  (void) TraceSquareLinecap(polygon_primitive,number_vertices,mid);
7374  offset.x=sqrt((double) (mid*mid/(inverse_slope.p*inverse_slope.p+1.0)));
7375  offset.y=(double) (offset.x*inverse_slope.p);
7376  if ((dy.p*offset.x-dx.p*offset.y) > 0.0)
7377  {
7378  box_p[0].x=polygon_primitive[0].point.x-offset.x;
7379  box_p[0].y=polygon_primitive[0].point.y-offset.x*inverse_slope.p;
7380  box_p[1].x=polygon_primitive[n].point.x-offset.x;
7381  box_p[1].y=polygon_primitive[n].point.y-offset.x*inverse_slope.p;
7382  box_q[0].x=polygon_primitive[0].point.x+offset.x;
7383  box_q[0].y=polygon_primitive[0].point.y+offset.x*inverse_slope.p;
7384  box_q[1].x=polygon_primitive[n].point.x+offset.x;
7385  box_q[1].y=polygon_primitive[n].point.y+offset.x*inverse_slope.p;
7386  }
7387  else
7388  {
7389  box_p[0].x=polygon_primitive[0].point.x+offset.x;
7390  box_p[0].y=polygon_primitive[0].point.y+offset.y;
7391  box_p[1].x=polygon_primitive[n].point.x+offset.x;
7392  box_p[1].y=polygon_primitive[n].point.y+offset.y;
7393  box_q[0].x=polygon_primitive[0].point.x-offset.x;
7394  box_q[0].y=polygon_primitive[0].point.y-offset.y;
7395  box_q[1].x=polygon_primitive[n].point.x-offset.x;
7396  box_q[1].y=polygon_primitive[n].point.y-offset.y;
7397  }
7398  /*
7399  Create strokes for the line join attribute: bevel, miter, round.
7400  */
7401  p=0;
7402  q=0;
7403  stroke_q[p++]=box_q[0];
7404  stroke_p[q++]=box_p[0];
7405  for (i=(ssize_t) n+1; i < (ssize_t) number_vertices; i++)
7406  {
7407  /*
7408  Compute the slope for this line segment, q.
7409  */
7410  dx.q=polygon_primitive[i].point.x-polygon_primitive[n].point.x;
7411  dy.q=polygon_primitive[i].point.y-polygon_primitive[n].point.y;
7412  dot_product=dx.q*dx.q+dy.q*dy.q;
7413  if (dot_product < 0.25)
7414  continue;
7415  slope.q=0.0;
7416  inverse_slope.q=0.0;
7417  if (fabs(dx.q) < MagickEpsilon)
7418  {
7419  if (dx.q >= 0.0)
7420  slope.q=dy.q < 0.0 ? -1.0/MagickEpsilon : 1.0/MagickEpsilon;
7421  else
7422  slope.q=dy.q < 0.0 ? 1.0/MagickEpsilon : -1.0/MagickEpsilon;
7423  }
7424  else
7425  if (fabs(dy.q) < MagickEpsilon)
7426  {
7427  if (dy.q >= 0.0)
7428  inverse_slope.q=dx.q < 0.0 ? -1.0/MagickEpsilon : 1.0/MagickEpsilon;
7429  else
7430  inverse_slope.q=dx.q < 0.0 ? 1.0/MagickEpsilon : -1.0/MagickEpsilon;
7431  }
7432  else
7433  {
7434  slope.q=dy.q/dx.q;
7435  inverse_slope.q=(-1.0*PerceptibleReciprocal(slope.q));
7436  }
7437  offset.x=sqrt((double) (mid*mid/(inverse_slope.q*inverse_slope.q+1.0)));
7438  offset.y=(double) (offset.x*inverse_slope.q);
7439  dot_product=dy.q*offset.x-dx.q*offset.y;
7440  if (dot_product > 0.0)
7441  {
7442  box_p[2].x=polygon_primitive[n].point.x-offset.x;
7443  box_p[2].y=polygon_primitive[n].point.y-offset.y;
7444  box_p[3].x=polygon_primitive[i].point.x-offset.x;
7445  box_p[3].y=polygon_primitive[i].point.y-offset.y;
7446  box_q[2].x=polygon_primitive[n].point.x+offset.x;
7447  box_q[2].y=polygon_primitive[n].point.y+offset.y;
7448  box_q[3].x=polygon_primitive[i].point.x+offset.x;
7449  box_q[3].y=polygon_primitive[i].point.y+offset.y;
7450  }
7451  else
7452  {
7453  box_p[2].x=polygon_primitive[n].point.x+offset.x;
7454  box_p[2].y=polygon_primitive[n].point.y+offset.y;
7455  box_p[3].x=polygon_primitive[i].point.x+offset.x;
7456  box_p[3].y=polygon_primitive[i].point.y+offset.y;
7457  box_q[2].x=polygon_primitive[n].point.x-offset.x;
7458  box_q[2].y=polygon_primitive[n].point.y-offset.y;
7459  box_q[3].x=polygon_primitive[i].point.x-offset.x;
7460  box_q[3].y=polygon_primitive[i].point.y-offset.y;
7461  }
7462  if (fabs((double) (slope.p-slope.q)) < MagickEpsilon)
7463  {
7464  box_p[4]=box_p[1];
7465  box_q[4]=box_q[1];
7466  }
7467  else
7468  {
7469  box_p[4].x=(double) ((slope.p*box_p[0].x-box_p[0].y-slope.q*box_p[3].x+
7470  box_p[3].y)/(slope.p-slope.q));
7471  box_p[4].y=(double) (slope.p*(box_p[4].x-box_p[0].x)+box_p[0].y);
7472  box_q[4].x=(double) ((slope.p*box_q[0].x-box_q[0].y-slope.q*box_q[3].x+
7473  box_q[3].y)/(slope.p-slope.q));
7474  box_q[4].y=(double) (slope.p*(box_q[4].x-box_q[0].x)+box_q[0].y);
7475  }
7476  CheckPathExtent(MaxStrokePad,MaxStrokePad);
7477  dot_product=dx.q*dy.p-dx.p*dy.q;
7478  if (dot_product <= 0.0)
7479  switch (draw_info->linejoin)
7480  {
7481  case BevelJoin:
7482  {
7483  stroke_q[q++]=box_q[1];
7484  stroke_q[q++]=box_q[2];
7485  dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7486  (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7487  if (dot_product <= miterlimit)
7488  stroke_p[p++]=box_p[4];
7489  else
7490  {
7491  stroke_p[p++]=box_p[1];
7492  stroke_p[p++]=box_p[2];
7493  }
7494  break;
7495  }
7496  case MiterJoin:
7497  {
7498  dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7499  (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7500  if (dot_product <= miterlimit)
7501  {
7502  stroke_q[q++]=box_q[4];
7503  stroke_p[p++]=box_p[4];
7504  }
7505  else
7506  {
7507  stroke_q[q++]=box_q[1];
7508  stroke_q[q++]=box_q[2];
7509  stroke_p[p++]=box_p[1];
7510  stroke_p[p++]=box_p[2];
7511  }
7512  break;
7513  }
7514  case RoundJoin:
7515  {
7516  dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7517  (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7518  if (dot_product <= miterlimit)
7519  stroke_p[p++]=box_p[4];
7520  else
7521  {
7522  stroke_p[p++]=box_p[1];
7523  stroke_p[p++]=box_p[2];
7524  }
7525  center=polygon_primitive[n].point;
7526  theta.p=atan2(box_q[1].y-center.y,box_q[1].x-center.x);
7527  theta.q=atan2(box_q[2].y-center.y,box_q[2].x-center.x);
7528  if (theta.q < theta.p)
7529  theta.q+=2.0*MagickPI;
7530  arc_segments=(size_t) CastDoubleToLong(ceil((double) ((theta.q-
7531  theta.p)/(2.0*sqrt(PerceptibleReciprocal(mid))))));
7532  CheckPathExtent(MaxStrokePad,arc_segments+MaxStrokePad);
7533  stroke_q[q].x=box_q[1].x;
7534  stroke_q[q].y=box_q[1].y;
7535  q++;
7536  for (j=1; j < (ssize_t) arc_segments; j++)
7537  {
7538  delta_theta=(double) (j*(theta.q-theta.p)/arc_segments);
7539  stroke_q[q].x=(double) (center.x+mid*cos(fmod((double)
7540  (theta.p+delta_theta),DegreesToRadians(360.0))));
7541  stroke_q[q].y=(double) (center.y+mid*sin(fmod((double)
7542  (theta.p+delta_theta),DegreesToRadians(360.0))));
7543  q++;
7544  }
7545  stroke_q[q++]=box_q[2];
7546  break;
7547  }
7548  default:
7549  break;
7550  }
7551  else
7552  switch (draw_info->linejoin)
7553  {
7554  case BevelJoin:
7555  {
7556  stroke_p[p++]=box_p[1];
7557  stroke_p[p++]=box_p[2];
7558  dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7559  (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7560  if (dot_product <= miterlimit)
7561  stroke_q[q++]=box_q[4];
7562  else
7563  {
7564  stroke_q[q++]=box_q[1];
7565  stroke_q[q++]=box_q[2];
7566  }
7567  break;
7568  }
7569  case MiterJoin:
7570  {
7571  dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7572  (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7573  if (dot_product <= miterlimit)
7574  {
7575  stroke_q[q++]=box_q[4];
7576  stroke_p[p++]=box_p[4];
7577  }
7578  else
7579  {
7580  stroke_q[q++]=box_q[1];
7581  stroke_q[q++]=box_q[2];
7582  stroke_p[p++]=box_p[1];
7583  stroke_p[p++]=box_p[2];
7584  }
7585  break;
7586  }
7587  case RoundJoin:
7588  {
7589  dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7590  (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7591  if (dot_product <= miterlimit)
7592  stroke_q[q++]=box_q[4];
7593  else
7594  {
7595  stroke_q[q++]=box_q[1];
7596  stroke_q[q++]=box_q[2];
7597  }
7598  center=polygon_primitive[n].point;
7599  theta.p=atan2(box_p[1].y-center.y,box_p[1].x-center.x);
7600  theta.q=atan2(box_p[2].y-center.y,box_p[2].x-center.x);
7601  if (theta.p < theta.q)
7602  theta.p+=2.0*MagickPI;
7603  arc_segments=(size_t) CastDoubleToLong(ceil((double) ((theta.p-
7604  theta.q)/(2.0*sqrt((double) (PerceptibleReciprocal(mid)))))));
7605  CheckPathExtent(arc_segments+MaxStrokePad,MaxStrokePad);
7606  stroke_p[p++]=box_p[1];
7607  for (j=1; j < (ssize_t) arc_segments; j++)
7608  {
7609  delta_theta=(double) (j*(theta.q-theta.p)/arc_segments);
7610  stroke_p[p].x=(double) (center.x+mid*cos(fmod((double)
7611  (theta.p+delta_theta),DegreesToRadians(360.0))));
7612  stroke_p[p].y=(double) (center.y+mid*sin(fmod((double)
7613  (theta.p+delta_theta),DegreesToRadians(360.0))));
7614  p++;
7615  }
7616  stroke_p[p++]=box_p[2];
7617  break;
7618  }
7619  default:
7620  break;
7621  }
7622  slope.p=slope.q;
7623  inverse_slope.p=inverse_slope.q;
7624  box_p[0]=box_p[2];
7625  box_p[1]=box_p[3];
7626  box_q[0]=box_q[2];
7627  box_q[1]=box_q[3];
7628  dx.p=dx.q;
7629  dy.p=dy.q;
7630  n=i;
7631  }
7632  stroke_p[p++]=box_p[1];
7633  stroke_q[q++]=box_q[1];
7634  /*
7635  Trace stroked polygon.
7636  */
7637  stroke_polygon=(PrimitiveInfo *) AcquireQuantumMemory((size_t)
7638  (p+q+2UL*closed_path+2UL),sizeof(*stroke_polygon));
7639  if (stroke_polygon == (PrimitiveInfo *) NULL)
7640  {
7641  (void) ThrowMagickException(exception,GetMagickModule(),
7642  ResourceLimitError,"MemoryAllocationFailed","`%s'","");
7643  stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p);
7644  stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q);
7645  polygon_primitive=(PrimitiveInfo *) RelinquishMagickMemory(
7646  polygon_primitive);
7647  return(stroke_polygon);
7648  }
7649  for (i=0; i < (ssize_t) p; i++)
7650  {
7651  stroke_polygon[i]=polygon_primitive[0];
7652  stroke_polygon[i].point=stroke_p[i];
7653  }
7654  if (closed_path != MagickFalse)
7655  {
7656  stroke_polygon[i]=polygon_primitive[0];
7657  stroke_polygon[i].point=stroke_polygon[0].point;
7658  i++;
7659  }
7660  for ( ; i < (ssize_t) (p+q+closed_path); i++)
7661  {
7662  stroke_polygon[i]=polygon_primitive[0];
7663  stroke_polygon[i].point=stroke_q[p+q+closed_path-(i+1)];
7664  }
7665  if (closed_path != MagickFalse)
7666  {
7667  stroke_polygon[i]=polygon_primitive[0];
7668  stroke_polygon[i].point=stroke_polygon[p+closed_path].point;
7669  i++;
7670  }
7671  stroke_polygon[i]=polygon_primitive[0];
7672  stroke_polygon[i].point=stroke_polygon[0].point;
7673  i++;
7674  stroke_polygon[i].primitive=UndefinedPrimitive;
7675  stroke_polygon[0].coordinates=(size_t) (p+q+2*closed_path+1);
7676  stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p);
7677  stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q);
7678  polygon_primitive=(PrimitiveInfo *) RelinquishMagickMemory(polygon_primitive);
7679  return(stroke_polygon);
7680 }
Definition: image.h:134
Definition: draw.c:146