OpenMesh
CollapseInfoT.hh
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41 
42 
48 //=============================================================================
49 //
50 // STRUCT CollpaseInfoT
51 //
52 //=============================================================================
53 #ifndef OPENMESH_DECIMATER_COLLAPSEINFOT_HH
54 #define OPENMESH_DECIMATER_COLLAPSEINFOT_HH
55 
56 //== INCLUDES =================================================================
57 
58 //== NAMESPACE ================================================================
59 
60 namespace OpenMesh {
61 namespace Decimater {
62 
63 //== CLASS DEFINITION =========================================================
64 
73 template<class Mesh>
74 struct CollapseInfoT {
75  public:
85  CollapseInfoT(Mesh& _mesh, typename Mesh::HalfedgeHandle _heh);
86 
87  Mesh& mesh;
88 
89  typename Mesh::HalfedgeHandle v0v1;
90  typename Mesh::HalfedgeHandle v1v0;
93  typename Mesh::Point p0;
94  typename Mesh::Point p1;
95  typename Mesh::FaceHandle fl;
96  typename Mesh::FaceHandle fr;
99 
100 
103  typename Mesh::HalfedgeHandle vlv1, v0vl, vrv0, v1vr;
105 };
106 
107 //-----------------------------------------------------------------------------
108 
128 template<class Mesh>
130  typename Mesh::HalfedgeHandle _heh) :
131  mesh(_mesh), v0v1(_heh), v1v0(_mesh.opposite_halfedge_handle(v0v1)), v0(
132  _mesh.to_vertex_handle(v1v0)), v1(_mesh.to_vertex_handle(v0v1)), p0(
133  _mesh.point(v0)), p1(_mesh.point(v1)), fl(_mesh.face_handle(v0v1)), fr(
134  _mesh.face_handle(v1v0))
135 
136 {
137  // get vl
138  if (fl.is_valid()) {
139  vlv1 = mesh.next_halfedge_handle(v0v1);
140  v0vl = mesh.next_halfedge_handle(vlv1);
141  vl = mesh.to_vertex_handle(vlv1);
142  vlv1 = mesh.opposite_halfedge_handle(vlv1);
143  v0vl = mesh.opposite_halfedge_handle(v0vl);
144  }
145 
146  // get vr
147  if (fr.is_valid()) {
148  vrv0 = mesh.next_halfedge_handle(v1v0);
149  v1vr = mesh.next_halfedge_handle(vrv0);
150  vr = mesh.to_vertex_handle(vrv0);
151  vrv0 = mesh.opposite_halfedge_handle(vrv0);
152  v1vr = mesh.opposite_halfedge_handle(v1vr);
153  }
154 }
155 
156 //=============================================================================
157 }// END_NS_DECIMATER
158 } // END_NS_OPENMESH
159 //=============================================================================
160 #endif // OPENMESH_DECIMATER_COLLAPSEINFOT_HH defined
161 //=============================================================================
162 
Mesh::HalfedgeHandle v1vr
Outer remaining halfedge of diamond spanned by v0, v1, vl, and vr.
Definition: CollapseInfoT.hh:103
Mesh::VertexHandle vr
Right vertex.
Definition: CollapseInfoT.hh:98
Mesh::HalfedgeHandle v0v1
Halfedge to be collapsed.
Definition: CollapseInfoT.hh:89
Mesh::Point p0
Position of removed vertex.
Definition: CollapseInfoT.hh:93
Mesh::HalfedgeHandle v1v0
Reverse halfedge.
Definition: CollapseInfoT.hh:90
Mesh::FaceHandle fr
Right face.
Definition: CollapseInfoT.hh:96
Mesh::VertexHandle vl
Left vertex.
Definition: CollapseInfoT.hh:97
Kernel::VertexHandle VertexHandle
Handle for referencing the corresponding item.
Definition: PolyMeshT.hh:136
Contains all the mesh ingredients like the polygonal mesh, the triangle mesh, different mesh kernels ...
Definition: MeshItems.hh:59
Kernel::Point Point
Coordinate type.
Definition: PolyMeshT.hh:112
Mesh::Point p1
Positions of remaining vertex.
Definition: CollapseInfoT.hh:94
Mesh::VertexHandle v1
Remaining vertex.
Definition: CollapseInfoT.hh:92
Mesh::HalfedgeHandle vlv1
Outer remaining halfedge of diamond spanned by v0, v1, vl, and vr.
Definition: CollapseInfoT.hh:103
Mesh::FaceHandle fl
Left face.
Definition: CollapseInfoT.hh:95
Stores information about a halfedge collapse.
Definition: CollapseInfoT.hh:74
CollapseInfoT(Mesh &_mesh, typename Mesh::HalfedgeHandle _heh)
Initializing constructor.
Definition: CollapseInfoT.hh:129
Mesh::HalfedgeHandle v0vl
Outer remaining halfedge of diamond spanned by v0, v1, vl, and vr.
Definition: CollapseInfoT.hh:103
Mesh::VertexHandle v0
Vertex to be removed.
Definition: CollapseInfoT.hh:91
Mesh::HalfedgeHandle vrv0
Outer remaining halfedge of diamond spanned by v0, v1, vl, and vr.
Definition: CollapseInfoT.hh:103

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