OpenMesh
DecimaterT.hh
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48 
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 
113  size_t decimate( size_t _n_collapses = 0 );
114 
124  size_t decimate_to( size_t _n_vertices )
125  {
126  return ( (_n_vertices < this->mesh().n_vertices()) ?
127  decimate( this->mesh().n_vertices() - _n_vertices ) : 0 );
128  }
129 
142  size_t decimate_to_faces( size_t _n_vertices=0, size_t _n_faces=0 );
143 
144 public:
145 
146  typedef typename Mesh::VertexHandle VertexHandle;
147  typedef typename Mesh::HalfedgeHandle HalfedgeHandle;
148 
151  {
152  public:
153 
154  HeapInterface(Mesh& _mesh,
155  VPropHandleT<float> _prio,
156  VPropHandleT<int> _pos)
157  : mesh_(_mesh), prio_(_prio), pos_(_pos)
158  { }
159 
160  inline bool
161  less( VertexHandle _vh0, VertexHandle _vh1 )
162  { return mesh_.property(prio_, _vh0) < mesh_.property(prio_, _vh1); }
163 
164  inline bool
165  greater( VertexHandle _vh0, VertexHandle _vh1 )
166  { return mesh_.property(prio_, _vh0) > mesh_.property(prio_, _vh1); }
167 
168  inline int
169  get_heap_position(VertexHandle _vh)
170  { return mesh_.property(pos_, _vh); }
171 
172  inline void
173  set_heap_position(VertexHandle _vh, int _pos)
174  { mesh_.property(pos_, _vh) = _pos; }
175 
176 
177  private:
178  Mesh& mesh_;
179  VPropHandleT<float> prio_;
180  VPropHandleT<int> pos_;
181  };
182 
184 
185 
186 private: //---------------------------------------------------- private methods
187 
189  void heap_vertex(VertexHandle _vh);
190 
191 private: //------------------------------------------------------- private data
192 
193 
194  // reference to mesh
195  Mesh& mesh_;
196 
197  // heap
198  #if (defined(_MSC_VER) && (_MSC_VER >= 1800)) || __cplusplus > 199711L || defined( __GXX_EXPERIMENTAL_CXX0X__ )
199  std::unique_ptr<DeciHeap> heap_;
200  #else
201  std::auto_ptr<DeciHeap> heap_;
202  #endif
203 
204  // vertex properties
205  VPropHandleT<HalfedgeHandle> collapse_target_;
206  VPropHandleT<float> priority_;
207  VPropHandleT<int> heap_position_;
208 
209 };
210 
211 //=============================================================================
212 } // END_NS_DECIMATER
213 } // END_NS_OPENMESH
214 //=============================================================================
215 #if defined(OM_INCLUDE_TEMPLATES) && !defined(OPENMESH_DECIMATER_DECIMATERT_CC)
216 #define OPENMESH_DECIMATER_TEMPLATES
217 #include "DecimaterT.cc"
218 #endif
219 //=============================================================================
220 #endif // OPENMESH_DECIMATER_DECIMATERT_HH defined
221 //=============================================================================
222 
Decimater framework.
Definition: DecimaterT.hh:83
size_t decimate_to_faces(size_t _n_vertices=0, size_t _n_faces=0)
Attempts to decimate the mesh until a desired vertex or face complexity is achieved.
Definition: DecimaterT.cc:260
A generic heap class.
~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
DecimaterT(Mesh &_mesh)
Constructor.
Definition: DecimaterT.cc:78
Mesh & mesh()
access mesh. used in modules.
Definition: BaseDecimaterT.hh:143
Stores information about a halfedge collapse.
Definition: CollapseInfoT.hh:80
size_t decimate(size_t _n_collapses=0)
Perform a number of collapses on the mesh.
Definition: DecimaterT.cc:156
An efficient, highly customizable heap.
Definition: HeapT.hh:143
size_t decimate_to(size_t _n_vertices)
Decimate the mesh to a desired target vertex complexity.
Definition: DecimaterT.hh:124
Heap interface.
Definition: DecimaterT.hh:150
Definition: BaseDecimaterT.hh:90
Base class for all decimation modules.
Definition: ModBaseT.hh:197

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