SoModifyViewVolumeElement.h

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**=======================================================================*/
/*=======================================================================
** Author      : Julien Chaplier (MMM yyyy)
** Modified by : Olivier Fedkiw (MMM yyyy)
**=======================================================================*/
 
#ifndef _SO_MODIFY_VIEW_VOLUME_ELEMENT
#define _SO_MODIFY_VIEW_VOLUME_ELEMENT
 
#include <Inventor/elements/SoSubElement.h>
#include <Inventor/SbBox.h>
 
SoEXTENDER_Documented class  SoModifyViewVolumeElement : public SoElement
{
 
  SO_ELEMENT_HEADER(SoModifyViewVolumeElement);
 
 public:
  static void set(SoState *state, const SbVec4f &portion);
  static void set(SoState *state, const SbBox3f &portion);
 
  static void setInfo(SoState *state, int info);
  static int getInfo(SoState *state);
 
  static const SbVec4f &get(SoState *state);
  static const SbBox3f &getBox(SoState *state);
 
  static void getWallCoordinates(SoState *state,
                                 SbVec3f &lowerLeft,
                                 SbVec3f &lowerRight,
                                 SbVec3f &upperLeft);
  static void setWallCoordinates(SoState *state,
                                 SbVec3f lowerLeft,
                                 SbVec3f lowerRight,
                                 SbVec3f upperLeft);
 
  static SbBool useWallCoordinates(SoState *state);
 
  static SbVec4f getDefault()
  { return SbVec4f(0., 0., 1., 1.); }
 
  static SbBox3f getDefaultBox()
  { return SbBox3f(0., 0., 0., 1., 1., 1.); }
 
  static SoModifyViewVolumeElement *getInstance(const SoState *state, SbBool &elemIsSet);
 
private:
 
  virtual void init(SoState *state);
 
  virtual SbBool matches(const SoElement* elt) const;
 
  virtual SoElement* copyMatchInfo() const;
 
 private:
  // Initializes the SubViewVolumeElement class
  static void initClass();
  static void exitClass();
 
 private:
  virtual ~SoModifyViewVolumeElement();
 
  int info;
  SbBool isSet;
  SbBox3f screenPortionBox;
  SbVec4f screenPortion;
  SbVec3f _lowerLeft, _lowerRight, _upperLeft;
  SbBool _useWall;
};
 
#endif // _SO_MODIFY_VIEW_VOLUME_ELEMENT