OpenMesh
DecimaterT.hh
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42 
43 
47 //=============================================================================
48 //
49 // CLASS DecimaterT
50 //
51 //=============================================================================
52 
53 #ifndef OPENMESH_DECIMATER_DECIMATERT_HH
54 #define OPENMESH_DECIMATER_DECIMATERT_HH
55 
56 
57 //== INCLUDES =================================================================
58 
59 #include <memory>
60 
61 #include <OpenMesh/Core/Utils/Property.hh>
64 
65 //== NAMESPACE ================================================================
66 
67 namespace OpenMesh {
68 namespace Decimater {
69 
70 
71 //== CLASS DEFINITION =========================================================
72 
73 
77 template < typename MeshT >
78 class DecimaterT : virtual public BaseDecimaterT<MeshT> //virtual especially for the mixed decimater
79 {
80 public: //-------------------------------------------------------- public types
81 
82  typedef DecimaterT< MeshT > Self;
83  typedef MeshT Mesh;
85  typedef ModBaseT<MeshT> Module;
86  typedef std::vector< Module* > ModuleList;
87  typedef typename ModuleList::iterator ModuleListIterator;
88 
89 public: //------------------------------------------------------ public methods
90 
92  explicit DecimaterT( Mesh& _mesh );
93 
95  ~DecimaterT();
96 
97 public:
98 
108  size_t decimate( size_t _n_collapses = 0 );
109 
119  size_t decimate_to( size_t _n_vertices )
120  {
121  return ( (_n_vertices < this->mesh().n_vertices()) ?
122  decimate( this->mesh().n_vertices() - _n_vertices ) : 0 );
123  }
124 
137  size_t decimate_to_faces( size_t _n_vertices=0, size_t _n_faces=0 );
138 
139 public:
140 
141  typedef typename Mesh::VertexHandle VertexHandle;
142  typedef typename Mesh::HalfedgeHandle HalfedgeHandle;
143 
146  {
147  public:
148 
149  HeapInterface(Mesh& _mesh,
150  VPropHandleT<float> _prio,
151  VPropHandleT<int> _pos)
152  : mesh_(_mesh), prio_(_prio), pos_(_pos)
153  { }
154 
155  inline bool
156  less( VertexHandle _vh0, VertexHandle _vh1 )
157  { return mesh_.property(prio_, _vh0) < mesh_.property(prio_, _vh1); }
158 
159  inline bool
160  greater( VertexHandle _vh0, VertexHandle _vh1 )
161  { return mesh_.property(prio_, _vh0) > mesh_.property(prio_, _vh1); }
162 
163  inline int
164  get_heap_position(VertexHandle _vh)
165  { return mesh_.property(pos_, _vh); }
166 
167  inline void
168  set_heap_position(VertexHandle _vh, int _pos)
169  { mesh_.property(pos_, _vh) = _pos; }
170 
171 
172  private:
173  Mesh& mesh_;
174  VPropHandleT<float> prio_;
175  VPropHandleT<int> pos_;
176  };
177 
179 
180 
181 private: //---------------------------------------------------- private methods
182 
184  void heap_vertex(VertexHandle _vh);
185 
186 private: //------------------------------------------------------- private data
187 
188 
189  // reference to mesh
190  Mesh& mesh_;
191 
192  // heap
193  #if (defined(_MSC_VER) && (_MSC_VER >= 1800)) || __cplusplus > 199711L || defined( __GXX_EXPERIMENTAL_CXX0X__ )
194  std::unique_ptr<DeciHeap> heap_;
195  #else
196  std::auto_ptr<DeciHeap> heap_;
197  #endif
198 
199  // vertex properties
200  VPropHandleT<HalfedgeHandle> collapse_target_;
201  VPropHandleT<float> priority_;
202  VPropHandleT<int> heap_position_;
203 
204 };
205 
206 //=============================================================================
207 } // END_NS_DECIMATER
208 } // END_NS_OPENMESH
209 //=============================================================================
210 #if defined(OM_INCLUDE_TEMPLATES) && !defined(OPENMESH_DECIMATER_DECIMATERT_CC)
211 #define OPENMESH_DECIMATER_TEMPLATES
212 #include "DecimaterT_impl.hh"
213 #endif
214 //=============================================================================
215 #endif // OPENMESH_DECIMATER_DECIMATERT_HH defined
216 //=============================================================================
217 
An efficient, highly customizable heap.
Definition: HeapT.hh:138
Mesh & mesh()
access mesh. used in modules.
Definition: BaseDecimaterT.hh:138
~DecimaterT()
Destructor.
Definition: DecimaterT_impl.hh:92
size_t decimate(size_t _n_collapses=0)
Perform a number of collapses on the mesh.
Definition: DecimaterT_impl.hh:150
Heap interface.
Definition: DecimaterT.hh:145
A generic heap class.
Base class for all decimation modules.
Definition: ModBaseT.hh:192
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_impl.hh:254
Definition: BaseDecimaterT.hh:85
size_t decimate_to(size_t _n_vertices)
Decimate the mesh to a desired target vertex complexity.
Definition: DecimaterT.hh:119
Decimater framework.
Definition: DecimaterT.hh:78
Contains all the mesh ingredients like the polygonal mesh, the triangle mesh, different mesh kernels ...
Definition: MeshItems.hh:59
DecimaterT(Mesh &_mesh)
Constructor.
Definition: DecimaterT_impl.hh:72
Stores information about a halfedge collapse.
Definition: CollapseInfoT.hh:74

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