OpenMesh
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00001 /*===========================================================================*\ 00002 * * 00003 * OpenMesh * 00004 * Copyright (C) 2001-2011 by Computer Graphics Group, RWTH Aachen * 00005 * www.openmesh.org * 00006 * * 00007 *---------------------------------------------------------------------------* 00008 * This file is part of OpenMesh. * 00009 * * 00010 * OpenMesh is free software: you can redistribute it and/or modify * 00011 * it under the terms of the GNU Lesser General Public License as * 00012 * published by the Free Software Foundation, either version 3 of * 00013 * the License, or (at your option) any later version with the * 00014 * following exceptions: * 00015 * * 00016 * If other files instantiate templates or use macros * 00017 * or inline functions from this file, or you compile this file and * 00018 * link it with other files to produce an executable, this file does * 00019 * not by itself cause the resulting executable to be covered by the * 00020 * GNU Lesser General Public License. This exception does not however * 00021 * invalidate any other reasons why the executable file might be * 00022 * covered by the GNU Lesser General Public License. * 00023 * * 00024 * OpenMesh is distributed in the hope that it will be useful, * 00025 * but WITHOUT ANY WARRANTY; without even the implied warranty of * 00026 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * 00027 * GNU Lesser General Public License for more details. * 00028 * * 00029 * You should have received a copy of the GNU LesserGeneral Public * 00030 * License along with OpenMesh. If not, * 00031 * see <http://www.gnu.org/licenses/>. * 00032 * * 00033 \*===========================================================================*/ 00034 00035 /*===========================================================================*\ 00036 * * 00037 * $Revision: 362 $ * 00038 * $Date: 2011-01-26 10:21:12 +0100 (Mi, 26 Jan 2011) $ * 00039 * * 00040 \*===========================================================================*/ 00041 00042 #ifndef OPENMESH_TRICONNECTIVITY_HH 00043 #define OPENMESH_TRICONNECTIVITY_HH 00044 00045 #include <OpenMesh/Core/Mesh/PolyConnectivity.hh> 00046 00047 namespace OpenMesh { 00048 00051 class TriConnectivity : public PolyConnectivity 00052 { 00053 public: 00054 00055 TriConnectivity() {} 00056 virtual ~TriConnectivity() {} 00057 00058 inline static bool is_triangles() 00059 { return true; } 00060 00064 inline void assign_connectivity(const TriConnectivity& _other) 00065 { PolyConnectivity::assign_connectivity(_other); } 00066 00067 inline void assign_connectivity(const PolyConnectivity& _other) 00068 { 00069 PolyConnectivity::assign_connectivity(_other); 00070 triangulate(); 00071 } 00072 00079 FaceHandle add_face(const std::vector<VertexHandle>& _vhandles) 00080 { return add_face(&_vhandles.front(), _vhandles.size()); } 00081 00082 FaceHandle add_face(const VertexHandle* _vhandles, uint _vhs_size); 00083 00084 FaceHandle add_face(VertexHandle _vh0, VertexHandle _vh1, VertexHandle _vh2) 00085 { 00086 VertexHandle vhs[3] = { _vh0, _vh1, _vh2 }; 00087 return PolyConnectivity::add_face(vhs, 3); 00088 } 00089 00091 00095 inline VertexHandle opposite_vh(HalfedgeHandle _heh) const 00096 { 00097 return is_boundary(_heh) ? InvalidVertexHandle : 00098 to_vertex_handle(next_halfedge_handle(_heh)); 00099 } 00100 00104 VertexHandle opposite_he_opposite_vh(HalfedgeHandle _heh) const 00105 { return opposite_vh(opposite_halfedge_handle(_heh)); } 00106 00110 00111 00116 bool is_collapse_ok(HalfedgeHandle _heh); 00117 00119 HalfedgeHandle vertex_split(VertexHandle v0, VertexHandle v1, 00120 VertexHandle vl, VertexHandle vr); 00121 00123 bool is_flip_ok(EdgeHandle _eh) const; 00124 00127 void flip(EdgeHandle _eh); 00128 00130 void split(EdgeHandle _eh, VertexHandle _vh); 00131 00133 inline void split(FaceHandle _fh, VertexHandle _vh) 00134 { PolyConnectivity::split(_fh, _vh); } 00135 00137 00138 private: 00140 HalfedgeHandle insert_loop(HalfedgeHandle _hh); 00142 HalfedgeHandle insert_edge(VertexHandle _vh, 00143 HalfedgeHandle _h0, HalfedgeHandle _h1); 00144 }; 00145 00146 } 00147 00148 #endif//OPENMESH_TRICONNECTIVITY_HH