MeshViz/3Ddata/PbCell.h

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/*=======================================================================
** Author      : VSG (MMM YYYY)
**=======================================================================*/

#ifndef  _PB_CELL_
#define  _PB_CELL_

#include <Inventor/SbBox.h>
#include <Inventor/SbLinear.h>
#include <MeshViz/graph/PbBase.h>
#include <MeshViz/misc/PbArrayOfInt.h>
#include <Inventor/STL/vector>

#ifdef __hpux
// hpux stl implementation does not support vector<bool> optimization
// or does not provide any allocator for this type.
// To avoid unresolved symbol, this optimized datatype can NOT be used. 
typedef std::vector<char> SbBoolVector;
#else
typedef std::vector<bool> SbBoolVector;
#endif

class PbArrayOfFloat;
class PoMesh3D;
class PiMarchingCase;

class  PbCell : public PbBase {


 public:

  PbCell() ;

  PbCell(const PbCell &cell);

  ~PbCell() ;

  PbCell& operator=(const PbCell &cell) ;

  virtual float getLongestEdgeLength() const = 0;

  virtual SbBox3f getBoundingBox() const;

  virtual void getBounds(float &xmin,float &ymin, float &zmin, 
                         float &xmax,float &ymax, float &zmax) const;

  virtual SbVec3f getCenter() const;

  virtual float getVolume() const = 0;

  virtual float getArea() const = 0;

  int getNumFacets() const { return m_numFaces;}; 

  int getNumEdges() const { return m_numEdges;};  

  int getNumNodes() const { return m_numNodes;};  

  int getIndex() const { return m_index;};        



  SbVec3f getNodeCoord(int nod) const { return m_nodeCoord[nod]; };

  int getNodeIndex(int nod) const { return m_nodeIndices[nod]; };

  void getNodesIndex(PbArrayOfInt &nodes_index) const;

  virtual void getNodesIndexOfEdge (int edge, PbArrayOfInt &nodes_index) const=0;

  virtual void getNodesIndexOfFacet (int facet, PbArrayOfInt &nodes_index) const=0;

  virtual void getNodesLocalIndexOfEdge (int edge, PbArrayOfInt &nodes_index) const=0;

  virtual void getNodesLocalIndexOfFacet (int facet, PbArrayOfInt &nodes_index) const=0;

  virtual int locatePoint(const SbVec3f &coord, float tolerance, SbVec3f &pcoord) const = 0;

  virtual void getWeight(const SbVec3f &pcoord, float *weight) const = 0;

  virtual float getValue(const SbVec3f &pcoord, const float *s) const;

  virtual SbVec3f getValue(const SbVec3f &pcoord, const SbVec3f *v) const;

  float getValue(const float *weight, const float *s) const;

  SbVec3f getValue(const float *weight, const SbVec3f *v) const;

  /*----------------------------------------------------------------------------*/
 private:
  virtual void print(FILE *fp) const;
  // Prints a formatted version of the cell to the given file pointer

  virtual int getOrdering() const { return 1;}

  virtual void getEdgesCrossingPlane(SbPlane &plane, 
                                     PbArrayOfInt &nodes_crossing, 
                                     PbArrayOfInt &edges_crossing,
                                     PbArrayOfFloat *edges_ratio) const;

  virtual const int* getNodesLocalIndexOfEdge(int edge) const = 0;

  virtual PiMarchingCase* getMCcase(unsigned char mc_case) const;
  /*----------------------------------------------------------------------------*/

  int addLevelSurfPart(PoMesh3D *mesh, SbBoolVector &nodes_sign, SbBool use_strip_set) const;

  // Defines the topology of a cell, no coord are specified
  // That allow to speed up the PbCellIterator for which no coord are necessary
  void setTopology(int index, int *node_indices) {
    m_nodeIndices = node_indices;
    m_index = index;
  }


  const int *getNodeIndexPtr() const { return m_nodeIndices; }

 private:
  virtual unsigned char getIsosurfCaseId(SbBoolVector &nodes_sign) const = 0;
  int m_numFaces;
  int m_numEdges;
  int m_numNodes;
  int m_index;            
  int *m_nodeIndices;
  SbVec3f m_nodeCoord[8]; 

  mutable SbBox3f m_bbox;

 private:
  void copy(const PbCell &cell) ;
  void destroy();
};


inline PiMarchingCase* 
PbCell::getMCcase(unsigned char) const 
{
  return NULL;
}

/*---------------------------------------------------------------------------*/

#endif /* _PB_CELL_ */

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Open Inventor Toolkit reference manual, generated on 12 Feb 2024
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