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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 00035 struct csPolygonMeshEdge 00036 { 00037 // Indices of the two vertices forming the edge. 00038 // vt1 < vt2. 00039 int vt1, vt2; 00040 // Indices of the two polygons sharing this edge. 00041 // If poly2 == -1 then this is an edge with only one polygon attached. 00042 int poly1, poly2; 00043 00044 // Active or not. If this flag is true the edge is active in the sense 00045 // that it actually connects two non-coplanar polygons (or is only 00046 // connected to one polygon). Edges that are not active are not relevant 00047 // for outline calculation. 00048 bool active; 00049 }; 00050 00054 class csPolygonMeshTools 00055 { 00056 public: 00062 static void CalculateNormals (iPolygonMesh* mesh, csVector3* normals); 00063 00069 static void CalculatePlanes (iPolygonMesh* mesh, csPlane3* planes); 00070 00078 static csPolygonMeshEdge* CalculateEdges (iPolygonMesh*, int& num_edges); 00079 00085 static int CheckActiveEdges (csPolygonMeshEdge* edges, int num_edges, 00086 csPlane3* planes); 00087 00109 static void CalculateOutline (csPolygonMeshEdge* edges, int num_edges, 00110 csPlane3* planes, int num_vertices, 00111 const csVector3& pos, 00112 int* outline_edges, int& num_outline_edges, 00113 bool* outline_verts, 00114 float& valid_radius); 00115 }; 00116 00119 #endif // __CS_PMTOOLS_H__ 00120