SbTransformProjection.h

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**=======================================================================*/
/*=======================================================================
** Author      : D. DALLA ROSA (Jun 2008)
**=======================================================================*/
 
#ifndef  _SB_TRANSFORMPROJECTION_
#define  _SB_TRANSFORMPROJECTION_
 
 
#include <Inventor/projection/SbProjection.h>
#include <Inventor/nodes/SoTransformProjection.h>
 
#if defined(_WIN32)
#pragma warning( push )
#pragma warning( disable: 4251 )
#endif
 
 
//---------------------------------------------------------------------------
class SbTransformProjection : public SbProjection
{
public:
 
  SbTransformProjection( SoProjection *node );
 
  virtual ~SbTransformProjection() {};
 
  virtual bool getProjectedBoundingBox( SbBox3f& bbox );
 
SoEXTENDER_Documented private:
  virtual void apply( SbVec3f &point );
};
 
 
//---------------------------------------------------------------------------
inline
SbTransformProjection::SbTransformProjection( SoProjection *node )
:SbProjection( node )
{
}
 
 
//---------------------------------------------------------------------------
inline void
SbTransformProjection::apply( SbVec3f &point )
{
  // Ok there is our projection node.
  SoTransformProjection* projection = (SoTransformProjection *)getProjectionNode();
 
  // We get some values from the configuration ndoe.
  float scaleFactor = projection->scaleFactor.getValue();
  SbVec3f centerPosition = projection->centerPosition.getValue();
 
  // We translate the point.
  point -= centerPosition;
 
  // We rescale it.
  point *= scaleFactor;
}
 
inline bool 
SbTransformProjection::getProjectedBoundingBox( SbBox3f& bbox )
{
  SbVec3f boundary[2];
  bbox.getBounds(boundary[0],boundary[1]);
  project(boundary[0]);
  project(boundary[1]);
  bbox.setBounds(boundary[0],boundary[1]);
  return true;
}
 
#ifdef _WIN32
#pragma warning(pop)
#endif
 
//---------------------------------------------------------------------------
 
#endif /* _SB_TRANSFORMPROJECTION_ */