PbHexahedronCell.h

/*=======================================================================
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**=======================================================================*/
/*=======================================================================
** Author      : VSG (MMM YYYY)
**=======================================================================*/
 
#ifndef  _PB_HEXAHEDRONCELL_
#define  _PB_HEXAHEDRONCELL_
 
#include <MeshViz/3Ddata/PbCell.h>
 
#ifdef USE_IOSTREAM
#  include <iostream>
#endif
 
class PbMesh;
class PiMarchingCase;
 
class  PbHexahedronCell : public PbCell {
 
 public:
 
  PbHexahedronCell(const PbMesh *owner_mesh) ;
 
  PbHexahedronCell(const PbHexahedronCell &cell);
 
  ~PbHexahedronCell() ;
 
  PbHexahedronCell& operator=(const PbHexahedronCell &cell) ;
 
  virtual float getLongestEdgeLength() const;
 
  virtual float getVolume() const;
 
  virtual float getArea() const { return 0.0;}
 
  virtual void getNodesIndexOfEdge (int edge, PbArrayOfInt &nodes_index) const;
 
  virtual void getNodesIndexOfFacet (int facet, PbArrayOfInt &nodes_index) const;
 
  virtual void getNodesLocalIndexOfEdge (int edge, PbArrayOfInt &nodes_index) const;
 
  virtual void getNodesLocalIndexOfFacet (int facet, PbArrayOfInt &nodes_index) const;
 
  virtual int locatePoint(const SbVec3f &coord, float tolerance, SbVec3f &pcoord) const;
 
  virtual void getWeight(const SbVec3f &pcoord, float *weight) const;
 
  void getDerivs(const SbVec3f &pcoord, float *weight) const;
 
  /*----------------------------------------------------------------------------*/
 private:
  SbBool set(int index, int *node_ids, float *x, float *y, float *z);
 
  void print(FILE *fp) const;
  // Prints a formatted version of the hexahedron to the given file pointer
 
  virtual int getOrdering() const;
 
  virtual const int* getNodesLocalIndexOfEdge(int edge) const {
    return c_edgeNodes[edge];
  }
 
  // not private because used by PbVoxelCell
  static PiMarchingCase* c_MarchingLookup[256];
/*----------------------------------------------------------------------------*/
  PiMarchingCase* getMCcase(unsigned char mc_case) const {
    return c_MarchingLookup[mc_case];
  }
  //  static std::vector< int >* getMCStripSet(unsigned char mc_case);
  //  static std::vector< int >* getMCFaceSet(unsigned char mc_case);
#ifdef USE_IOSTREAM
  friend std::ostream& operator << (std::ostream& s, PbHexahedronCell &cell);
#endif
 
    static SbBool    init();
    static void          finish();
 
/*----------------------------------------------------------------------------*/
 private:
   virtual unsigned char getIsosurfCaseId(SbBoolVector &nodes_sign) const;
 
 private:
 
  void copy(const PbHexahedronCell &cell) ;
  void destroy();
 
  static PiMarchingCase* addMC(PiMarchingCase *mcase);
  static PiMarchingCase* addMCBoth(PiMarchingCase *mcase);
 
  static int             c_edgeNodes[12][2]; 
  static SbBool          c_isInit;
  static size_t          c_numInit;
 
  static int             c_count;
};
 
/*---------------------------------------------------------------------------*/
 
#endif /* _PB_HEXAHEDRONCELL_ */