SoCoordinateElement.h

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**=======================================================================*/
/*=======================================================================
** Author      : Paul S. Strauss (MMM yyyy)
**=======================================================================*/
/*=======================================================================
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**=======================================================================*/
/*=======================================================================
** Modified by : VSG (MMM YYYY)
**=======================================================================*/
 
 
#ifndef  _SO_COORDINATE_ELEMENT
#define  _SO_COORDINATE_ELEMENT
 
#include <Inventor/SbBasic.h>
#include <Inventor/SbLinear.h>
#include <Inventor/elements/SoReplacedElement.h>
 
 
SoEXTENDER_Documented class  SoCoordinateElement : public SoReplacedElement {
 
  SO_ELEMENT_HEADER(SoCoordinateElement);
 
 public:
 
  static void         set3(SoState *state, SoNode *node,
                           int32_t numCoords, const SbVec3f *coords);
  static void         set4(SoState *state, SoNode *node,
                           int32_t numCoords, const SbVec4f *coords);
 
  static const SoCoordinateElement * getInstance(SoState *state)
    {return getConstElement<SoCoordinateElement>(state);}
 
  int32_t             getNum() const          { return numCoords; }
 
  SbBool              is3D() const            { return coordsAre3D; }
 
  const SbVec3f &     get3(int index) const;
  const SbVec4f &     get4(int index) const;
 
  const SbVec3f *     getCoord3() const { return coords3 ; }
 
  const SbVec4f *     getCoord4() const { return coords4 ; }
 
  static SbVec3f getDefault3()                { return SbVec3f(0, 0, 0); }
  static SbVec4f getDefault4()                { return SbVec4f(0, 0, 0, 1); }
 
  virtual void        print(FILE *fp) const;
 
private:
 
  virtual void init(SoState *state);
 
 private:
  // Initializes the SoCoordinateElement class
  static void         initClass();
  static void         exitClass();
 
  // check if coord is a real user coord or the default3 value
  bool isEmpty() const;
 
 private:
  int32_t             numCoords;
  const SbVec3f       *coords3;
  const SbVec4f       *coords4;
  SbBool              coordsAre3D;
 
  virtual ~SoCoordinateElement();
 
 private:
  // This stores a pointer to the default coordinates so that we can
  // set "coords3" to point to them if no other values have been set.
  static SbVec3f     *defaultCoord3;
 
  SbVec3f             convert3;       // To convert from 4-D to 3-D
  SbVec4f             convert4;       // To convert from 3-D to 4-D
};
 
#endif /* _SO_COORDINATE_ELEMENT */