SoClipPlaneElement.h

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**=======================================================================*/
/*=======================================================================
** Author      : Paul S. Strauss (MMM yyyy)
**=======================================================================*/
/*=======================================================================
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**=======================================================================*/
/*=======================================================================
** Modified by : VSG (MMM YYYY)
**=======================================================================*/
#ifndef  _SO_CLIP_PLANE_ELEMENT
#define  _SO_CLIP_PLANE_ELEMENT
 
#include <Inventor/SbLinear.h>
#include <Inventor/elements/SoAccumulatedElement.h>

 
SoEXTENDER_Documented class  SoClipPlaneElement : public SoAccumulatedElement
{
 
  SO_ELEMENT_HEADER(SoClipPlaneElement);
 
public:
  static void add(SoState *state, SoNode *node, const SbPlane &plane);

  virtual void push(SoState *state);

  virtual void pop(SoState *state, const SoElement *prevTopElement);

  static const SoClipPlaneElement * getInstance(SoState *state);

  int getNum() const;

  const SbPlane& get(int index, SbBool inWorldSpace = TRUE) const;

  static int getMaxPlanes();

  virtual void print(FILE *fp) const;
 
private:

  virtual void init(SoState *state);
 
private:
  
  static void initClass();
  static void exitClass();

  enum Space
  {
    MODEL,
    WORLD,
    VIEW
  };

  const SbPlane& get(int index, Space space) const;

  static void enable( SoState* state, SbBool activate );

  static SbBool isEnabled(SoState* state);
 
private:

  SbPList planes; 

  int startIndex;

  SbBool m_enabled;

  virtual void        addToElt(const SbPlane &plane, const SbMatrix &modelMatrix, const SbMatrix &viewMatrix);

  virtual ~SoClipPlaneElement();
};
 
#endif /* _SO_CLIP_PLANE_ELEMENT */