MeshViz/3Ddata/PbTriangleCell.h

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

#ifndef  _PB_TRIANGLECELL_
#define  _PB_TRIANGLECELL_

#include <MeshViz/3Ddata/PbCell.h>

class PbMesh;

class  PbTriangleCell : public PbCell {

 public:

  PbTriangleCell(const PbMesh *owner_mesh);

  PbTriangleCell(const PbTriangleCell &cell);

  ~PbTriangleCell();

  PbTriangleCell& operator=(const PbTriangleCell &cell);

  virtual float getLongestEdgeLength() const;

  virtual float getVolume() const { return 0.0; }

  virtual float getArea() const;

  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;

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

 private:
  SbBool set(int index, int *node_ids, const float *x, const float *y);

  SbBool set(int index, int *node_ids, const float *x, const float *y, const float *z);


  virtual const int* getNodesLocalIndexOfEdge(int edge) const {
    return c_edgeNodes[edge];
  }

  // Prints a formatted version of the triangle to the given file pointer
  void print(FILE *fp) const;

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

 private:
   virtual unsigned char getIsosurfCaseId(SbBoolVector &nodes_sign) const;

 private:

  void copy(const PbTriangleCell &cell);
  void destroy();
  SbBool set(
             const float *x, const float *y, const float *z,
             const float *xc, const float *yc);
  int locatePointOnXY(const SbVec3f &coord, float tolerance, SbVec3f &pcoord, 
                      int indx, int indy) const;

  float m_translateXPcoord, m_translateYPcoord;
  float m_coordToPcoordMatrixMa, m_coordToPcoordMatrixMb,
        m_coordToPcoordMatrixMc, m_coordToPcoordMatrixMd;

  SbVec3f    m_normal;
  SbBool     m_2DCell, m_isValid;
  int        m_ignoredProjCoord;
  static int c_edgeNodes[3][2]; 
};


inline unsigned char
PbTriangleCell::getIsosurfCaseId(SbBoolVector &) const
{
  return 0; 
}

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

#endif /* _PB_TRIANGLECELL_ */

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Open Inventor Toolkit reference manual, generated on 15 Mar 2023
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