csgeom/pmtools.h
Go to the documentation of this file.00001 /* 00002 Copyright (C) 2002 by Jorrit Tyberghein 00003 00004 This library is free software; you can redistribute it and/or 00005 modify it under the terms of the GNU Library General Public 00006 License as published by the Free Software Foundation; either 00007 version 2 of the License, or (at your option) any later version. 00008 00009 This library is distributed in the hope that it will be useful, 00010 but WITHOUT ANY WARRANTY; without even the implied warranty of 00011 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00012 Library General Public License for more details. 00013 00014 You should have received a copy of the GNU Library General Public 00015 License along with this library; if not, write to the Free 00016 Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 00017 */ 00018 00019 #ifndef __CS_PMTOOLS_H__ 00020 #define __CS_PMTOOLS_H__ 00021 00028 class csVector3; 00029 class csPlane3; 00030 struct iPolygonMesh; 00031 00032 #include "csutil/array.h" 00033 #include "csgeom/polymesh.h" 00034 00038 struct csPolygonMeshEdge 00039 { 00040 // Indices of the two vertices forming the edge. 00041 // vt1 < vt2. 00042 int vt1, vt2; 00043 // Indices of the two polygons sharing this edge. 00044 // If poly2 == -1 then this is an edge with only one polygon attached. 00045 int poly1, poly2; 00046 00047 // Active or not. If this flag is true the edge is active in the sense 00048 // that it actually connects two non-coplanar polygons (or is only 00049 // connected to one polygon). Edges that are not active are not relevant 00050 // for outline calculation. 00051 bool active; 00052 }; 00053 00057 class csPolygonMeshTools 00058 { 00059 public: 00065 static void CalculateNormals (iPolygonMesh* mesh, csVector3* normals); 00066 00072 static void CalculatePlanes (iPolygonMesh* mesh, csPlane3* planes); 00073 00081 static csPolygonMeshEdge* CalculateEdges (iPolygonMesh*, int& num_edges); 00082 00088 static int CheckActiveEdges (csPolygonMeshEdge* edges, int num_edges, 00089 csPlane3* planes); 00090 00112 static void CalculateOutline (csPolygonMeshEdge* edges, int num_edges, 00113 csPlane3* planes, int num_vertices, 00114 const csVector3& pos, 00115 int* outline_edges, int& num_outline_edges, 00116 bool* outline_verts, 00117 float& valid_radius); 00118 00123 static bool IsMeshClosed (iPolygonMesh* polyMesh); 00124 00131 static void CloseMesh (iPolygonMesh* polyMesh, 00132 csArray<csMeshedPolygon>& newPolys, int*& vertidx, int& vertidx_len); 00133 00138 static void Triangulate (iPolygonMesh* polymesh, 00139 csTriangle*& tris, int& tri_count); 00140 00146 static void Polygonize (iPolygonMesh* polymesh, 00147 csMeshedPolygon*& polygons, int& poly_count); 00148 }; 00149 00152 #endif // __CS_PMTOOLS_H__ 00153
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