SbProjector.h

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/*=======================================================================
** Author      : Howard Look (MMM yyyy)
** Modified by : Paul Isaacs (MMM yyyy)
**=======================================================================*/
/*=======================================================================
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**=======================================================================*/
/*=======================================================================
** Modified by : VSG (MMM YYYY)
**=======================================================================*/
 
 
#ifndef _SB_PROJECTOR_
#define _SB_PROJECTOR_
 
#include <Inventor/SbLinear.h>
 
class  SbProjector
{
 public:
  virtual ~SbProjector() {};
 
  virtual SbVec3f project(const SbVec2f &point) = 0;
  virtual SbVec3f intersect( const SbLine &line ) = 0;
 
  virtual void setViewVolume(const SbViewVolume &vol);
 
  const SbViewVolume &getViewVolume() const { return viewVol; }
    
  virtual void setWorkingSpace(const SbMatrix &space);
 
  const SbMatrix &getWorkingSpace() const { return workingToWorld ; }
 
  virtual SbProjector *copy() const = 0;
 
 private:
  // Default constructor.
  // The default view volume is undefined.
  // The default working space is identity (world space).
  SbProjector();
 
  // Given this mouse point, return the line it projects to
  // in working space.
  SbLine getWorkingLine(const SbVec2f &point) const;
  
  SbViewVolume viewVol;
  SbMatrix worldToWorking, workingToWorld;
};
 
#endif /* _SB_PROJECTOR_ */