OpenMesh
 All Classes Namespaces Files Functions Variables Typedefs Enumerations Enumerator Friends Macros Modules Pages
CollapseInfoT.hh
Go to the documentation of this file.
1 /*===========================================================================*\
2  * *
3  * OpenMesh *
4  * Copyright (C) 2001-2014 by Computer Graphics Group, RWTH Aachen *
5  * www.openmesh.org *
6  * *
7  *---------------------------------------------------------------------------*
8  * This file is part of OpenMesh. *
9  * *
10  * OpenMesh is free software: you can redistribute it and/or modify *
11  * it under the terms of the GNU Lesser General Public License as *
12  * published by the Free Software Foundation, either version 3 of *
13  * the License, or (at your option) any later version with the *
14  * following exceptions: *
15  * *
16  * If other files instantiate templates or use macros *
17  * or inline functions from this file, or you compile this file and *
18  * link it with other files to produce an executable, this file does *
19  * not by itself cause the resulting executable to be covered by the *
20  * GNU Lesser General Public License. This exception does not however *
21  * invalidate any other reasons why the executable file might be *
22  * covered by the GNU Lesser General Public License. *
23  * *
24  * OpenMesh is distributed in the hope that it will be useful, *
25  * but WITHOUT ANY WARRANTY; without even the implied warranty of *
26  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
27  * GNU Lesser General Public License for more details. *
28  * *
29  * You should have received a copy of the GNU LesserGeneral Public *
30  * License along with OpenMesh. If not, *
31  * see <http://www.gnu.org/licenses/>. *
32  * *
33  \*===========================================================================*/
34 
35 /*===========================================================================*\
36  * *
37  * $Revision: 990 $ *
38  * $Date: 2014-02-05 10:01:07 +0100 (Mi, 05 Feb 2014) $ *
39  * *
40  \*===========================================================================*/
41 
47 //=============================================================================
48 //
49 // STRUCT CollpaseInfoT
50 //
51 //=============================================================================
52 #ifndef OPENMESH_DECIMATER_COLLAPSEINFOT_HH
53 #define OPENMESH_DECIMATER_COLLAPSEINFOT_HH
54 
55 //== INCLUDES =================================================================
56 
57 //== NAMESPACE ================================================================
58 
59 namespace OpenMesh {
60 namespace Decimater {
61 
62 //== CLASS DEFINITION =========================================================
63 
72 template<class Mesh>
73 struct CollapseInfoT {
74  public:
84  CollapseInfoT(Mesh& _mesh, typename Mesh::HalfedgeHandle _heh);
85 
86  Mesh& mesh;
87 
88  typename Mesh::HalfedgeHandle v0v1;
89  typename Mesh::HalfedgeHandle v1v0;
90  typename Mesh::VertexHandle v0;
91  typename Mesh::VertexHandle v1;
92  typename Mesh::Point p0;
93  typename Mesh::Point p1;
94  typename Mesh::FaceHandle fl;
95  typename Mesh::FaceHandle fr;
96  typename Mesh::VertexHandle vl;
97  typename Mesh::VertexHandle vr;
98 
99 
102  typename Mesh::HalfedgeHandle vlv1, v0vl, vrv0, v1vr;
104 };
105 
106 //-----------------------------------------------------------------------------
107 
127 template<class Mesh>
129  typename Mesh::HalfedgeHandle _heh) :
130  mesh(_mesh), v0v1(_heh), v1v0(_mesh.opposite_halfedge_handle(v0v1)), v0(
131  _mesh.to_vertex_handle(v1v0)), v1(_mesh.to_vertex_handle(v0v1)), p0(
132  _mesh.point(v0)), p1(_mesh.point(v1)), fl(_mesh.face_handle(v0v1)), fr(
133  _mesh.face_handle(v1v0))
134 
135 {
136  // get vl
137  if (fl.is_valid()) {
138  vlv1 = mesh.next_halfedge_handle(v0v1);
139  v0vl = mesh.next_halfedge_handle(vlv1);
140  vl = mesh.to_vertex_handle(vlv1);
141  vlv1 = mesh.opposite_halfedge_handle(vlv1);
142  v0vl = mesh.opposite_halfedge_handle(v0vl);
143  }
144 
145  // get vr
146  if (fr.is_valid()) {
147  vrv0 = mesh.next_halfedge_handle(v1v0);
148  v1vr = mesh.next_halfedge_handle(vrv0);
149  vr = mesh.to_vertex_handle(vrv0);
150  vrv0 = mesh.opposite_halfedge_handle(vrv0);
151  v1vr = mesh.opposite_halfedge_handle(v1vr);
152  }
153 }
154 
155 //=============================================================================
156 }// END_NS_DECIMATER
157 } // END_NS_OPENMESH
158 //=============================================================================
159 #endif // OPENMESH_DECIMATER_COLLAPSEINFOT_HH defined
160 //=============================================================================
161 
Stores information about a halfedge collapse.
Definition: CollapseInfoT.hh:73
Mesh::HalfedgeHandle vlv1
Outer remaining halfedge of diamond spanned by v0, v1, vl, and vr.
Definition: CollapseInfoT.hh:102
Mesh::Point p0
Position of removed vertex.
Definition: CollapseInfoT.hh:92
Mesh::VertexHandle vr
Right vertex.
Definition: CollapseInfoT.hh:97
Mesh::VertexHandle vl
Left vertex.
Definition: CollapseInfoT.hh:96
Mesh::HalfedgeHandle vrv0
Outer remaining halfedge of diamond spanned by v0, v1, vl, and vr.
Definition: CollapseInfoT.hh:102
Contains all the mesh ingredients like the polygonal mesh, the triangle mesh, different mesh kernels ...
Definition: MeshItems.hh:56
Mesh::VertexHandle v0
Vertex to be removed.
Definition: CollapseInfoT.hh:90
Mesh::FaceHandle fr
Right face.
Definition: CollapseInfoT.hh:95
CollapseInfoT(Mesh &_mesh, typename Mesh::HalfedgeHandle _heh)
Initializing constructor.
Definition: CollapseInfoT.hh:128
Mesh::HalfedgeHandle v0v1
Halfedge to be collapsed.
Definition: CollapseInfoT.hh:88
Mesh::HalfedgeHandle v0vl
Outer remaining halfedge of diamond spanned by v0, v1, vl, and vr.
Definition: CollapseInfoT.hh:102
Mesh::HalfedgeHandle v1vr
Outer remaining halfedge of diamond spanned by v0, v1, vl, and vr.
Definition: CollapseInfoT.hh:102
Mesh::HalfedgeHandle v1v0
Reverse halfedge.
Definition: CollapseInfoT.hh:89
Mesh::Point p1
Positions of remaining vertex.
Definition: CollapseInfoT.hh:93
Mesh::VertexHandle v1
Remaining vertex.
Definition: CollapseInfoT.hh:91
Mesh::FaceHandle fl
Left face.
Definition: CollapseInfoT.hh:94

acg pic Project OpenMesh, ©  Computer Graphics Group, RWTH Aachen. Documentation generated using doxygen .