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DecimaterT.hh
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52 //=============================================================================
53 //
54 // CLASS DecimaterT
55 //
56 //=============================================================================
57 
58 #ifndef OPENMESH_DECIMATER_DECIMATERT_HH
59 #define OPENMESH_DECIMATER_DECIMATERT_HH
60 
61 
62 //== INCLUDES =================================================================
63 
64 #include <memory>
65 
66 #include <OpenMesh/Core/Utils/Property.hh>
69 
70 //== NAMESPACE ================================================================
71 
72 namespace OpenMesh {
73 namespace Decimater {
74 
75 
76 //== CLASS DEFINITION =========================================================
77 
78 
82 template < typename MeshT >
83 class DecimaterT : virtual public BaseDecimaterT<MeshT> //virtual especially for the mixed decimater
84 {
85 public: //-------------------------------------------------------- public types
86 
87  typedef DecimaterT< MeshT > Self;
88  typedef MeshT Mesh;
90  typedef ModBaseT<MeshT> Module;
91  typedef std::vector< Module* > ModuleList;
92  typedef typename ModuleList::iterator ModuleListIterator;
93 
94 public: //------------------------------------------------------ public methods
95 
97  DecimaterT( Mesh& _mesh );
98 
100  ~DecimaterT();
101 
102 public:
103 
107  size_t decimate( size_t _n_collapses = 0 );
108 
110  size_t decimate_to( size_t _n_vertices )
111  {
112  return ( (_n_vertices < this->mesh().n_vertices()) ?
113  decimate( this->mesh().n_vertices() - _n_vertices ) : 0 );
114  }
115 
120  size_t decimate_to_faces( size_t _n_vertices=0, size_t _n_faces=0 );
121 
122 public:
123 
124  typedef typename Mesh::VertexHandle VertexHandle;
125  typedef typename Mesh::HalfedgeHandle HalfedgeHandle;
126 
129  {
130  public:
131 
132  HeapInterface(Mesh& _mesh,
133  VPropHandleT<float> _prio,
134  VPropHandleT<int> _pos)
135  : mesh_(_mesh), prio_(_prio), pos_(_pos)
136  { }
137 
138  inline bool
139  less( VertexHandle _vh0, VertexHandle _vh1 )
140  { return mesh_.property(prio_, _vh0) < mesh_.property(prio_, _vh1); }
141 
142  inline bool
143  greater( VertexHandle _vh0, VertexHandle _vh1 )
144  { return mesh_.property(prio_, _vh0) > mesh_.property(prio_, _vh1); }
145 
146  inline int
147  get_heap_position(VertexHandle _vh)
148  { return mesh_.property(pos_, _vh); }
149 
150  inline void
151  set_heap_position(VertexHandle _vh, int _pos)
152  { mesh_.property(pos_, _vh) = _pos; }
153 
154 
155  private:
156  Mesh& mesh_;
157  VPropHandleT<float> prio_;
158  VPropHandleT<int> pos_;
159  };
160 
162 
163 
164 private: //---------------------------------------------------- private methods
165 
167  void heap_vertex(VertexHandle _vh);
168 
169 private: //------------------------------------------------------- private data
170 
171 
172  // reference to mesh
173  Mesh& mesh_;
174 
175  // heap
176  #if __cplusplus > 199711L || defined( __GXX_EXPERIMENTAL_CXX0X__ )
177  std::unique_ptr<DeciHeap> heap_;
178  #else
179  std::auto_ptr<DeciHeap> heap_;
180  #endif
181 
182  // vertex properties
183  VPropHandleT<HalfedgeHandle> collapse_target_;
184  VPropHandleT<float> priority_;
185  VPropHandleT<int> heap_position_;
186 
187 };
188 
189 //=============================================================================
190 } // END_NS_DECIMATER
191 } // END_NS_OPENMESH
192 //=============================================================================
193 #if defined(OM_INCLUDE_TEMPLATES) && !defined(OPENMESH_DECIMATER_DECIMATERT_CC)
194 #define OPENMESH_DECIMATER_TEMPLATES
195 #include "DecimaterT.cc"
196 #endif
197 //=============================================================================
198 #endif // OPENMESH_DECIMATER_DECIMATERT_HH defined
199 //=============================================================================
200 
Mesh & mesh()
access mesh. used in modules.
Definition: BaseDecimaterT.hh:143
A generic heap class.
Stores information about a halfedge collapse.
Definition: CollapseInfoT.hh:80
Definition: BaseDecimaterT.hh:90
size_t decimate_to(size_t _n_vertices)
Decimate to target complexity, returns number of collapses.
Definition: DecimaterT.hh:110
size_t decimate(size_t _n_collapses=0)
Decimate (perform _n_collapses collapses).
Definition: DecimaterT.cc:156
size_t decimate_to_faces(size_t _n_vertices=0, size_t _n_faces=0)
Decimate to target complexity (vertices and faces).
Definition: DecimaterT.cc:260
Heap interface.
Definition: DecimaterT.hh:128
DecimaterT(Mesh &_mesh)
Constructor.
Definition: DecimaterT.cc:78
Handle for a vertex entity.
Definition: Handles.hh:123
~DecimaterT()
Destructor.
Definition: DecimaterT.cc:98
Contains all the mesh ingredients like the polygonal mesh, the triangle mesh, different mesh kernels ...
Definition: MeshItems.hh:64
An efficient, highly customizable heap.
Definition: HeapT.hh:143
Decimater framework.
Definition: DecimaterT.hh:83
Handle for a halfedge entity.
Definition: Handles.hh:130
Base class for all decimation modules.
Definition: ModBaseT.hh:197

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