define of abstract class of mofier operator for decimation

vcg/complex/tetramesh/decimation/operationsdef.h

@@ -0,0 +1,55 @@
+#ifndef __VCG_TETRA_DECIMATION_OPERATION_DEFS
+# define __VCG_TETRA_DECIMATION_OPERATION_DEFS
+
+namespace vcg{
+  namespace tetra{
+  
+
+enum ModifiersType{MTEdgeCollapse,MTEdgeSplit};
+
+  /** \addtogroup tetramesh */
+/*@{*/
+/// This Class is used to generalize a modifier
+
+template <class TETRA_MESH_TYPE> 
+class LocalModification
+{
+
+ public:
+  /// The tetrahedral mesh type
+  typedef	typename TETRA_MESH_TYPE TetraMeshType;
+  /// The tetrahedron type
+  typedef	typename TetraMeshType::TetraType TetraType;
+	/// The vertex type
+	typedef	typename TetraType::VertexType VertexType;
+  /// The coordinate type
+	typedef	typename TetraType::VertexType::CoordType CoordType;
+  /// The scalar type
+  typedef	typename TetraMeshType::VertexType::ScalarType ScalarType;
+  ///the pos type
+  typedef typename Pos<TetraType> PosType;
+  typedef typename std::pair<vcg::tetra::ModifiersType,PosType> HeapRetElem;
+  //the return type of heap updating 
+  typedef typename std::vector<HeapRetElem> HeapRetType;
+  /// Default Constructor
+	LocalModification()
+		{
+		};
+  
+  ~LocalModification()
+		{
+		};
+  
+  
+  virtual ScalarType ComputePriority()=0;
+  virtual ScalarType ComputeError()=0;
+  virtual void Execute()=0;
+  virtual bool PreserveTopology()=0;
+  virtual HeapRetType UpdateHeap()=0;
+
+};//end class local modification
+
+  
+  }
+}
+#endif