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Coin / src / nodes / SoTransformation.cpp

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/*!
  \class SoTransformation SoTransformation.h Inventor/nodes/SoTransformation.h
  \brief The SoTransformation class is the abstract base class for transformation nodes.
  \ingroup nodes

  To position and orient geometry within the 3D world space, various
  node types for transformations are used. These nodes all inherit the
  SoTransformation base class.

  Note that transformations will be accumulated through the scene
  graph, unless used under SoSeparator nodes, where the transformation
  matrix stack will be pushed and popped. Here is a short example
  demonstrating this principle:

  \verbatim
#Inventor V2.1 ascii

Separator {
   BaseColor { rgb 1 0 0 }
   Cone { }

   Translation { translation 3 0 0 }

   Separator {
      Rotation { rotation 1 0 0  1.57 }
      BaseColor { rgb 0 1 0 }
      Cone { }
   } # SoSeparator restores transformation matrix here

   Translation { translation 3 0 0 }

   Rotation { rotation 1 0 0  1.57 }
   BaseColor { rgb 0 0 1 }
   Cone { }

   Translation { translation 3 0 0 }

   # Last SoRotation was not within SoSeparator, so this next
   # SoRotation will accumulate with the previous.
   Rotation { rotation 1 0 0  1.57 }
   BaseColor { rgb 1 1 0 }
   Cone { }
}
  \endverbatim

  Which results in the following scene:

  <center><img src="http://doc.coin3d.org/images/Coin/nodes/transformaccum.png"></center>
*/


#include <Inventor/actions/SoCallbackAction.h>

#include <Inventor/actions/SoGLRenderAction.h>
#include <Inventor/actions/SoGetBoundingBoxAction.h>
#include <Inventor/actions/SoGetPrimitiveCountAction.h>
#include <Inventor/actions/SoPickAction.h>
#include <Inventor/elements/SoBBoxModelMatrixElement.h>
#include <Inventor/elements/SoGLModelMatrixElement.h>
#include <Inventor/elements/SoLocalBBoxMatrixElement.h>

#include "nodes/SoSubNodeP.h"

SO_NODE_ABSTRACT_SOURCE(SoTransformation);

/*!
  Constructor.
*/
SoTransformation::SoTransformation(void)
{
  SO_NODE_INTERNAL_CONSTRUCTOR(SoTransformation);
}

/*!
  Destructor.
*/
SoTransformation::~SoTransformation()
{
}

// Doc from superclass.
void
SoTransformation::initClass(void)
{
  SO_NODE_INTERNAL_INIT_ABSTRACT_CLASS(SoTransformation, SO_FROM_INVENTOR_1);

  SO_ENABLE(SoGetBoundingBoxAction, SoModelMatrixElement);
  SO_ENABLE(SoGetBoundingBoxAction, SoBBoxModelMatrixElement);
  SO_ENABLE(SoGetBoundingBoxAction, SoLocalBBoxMatrixElement);

  SO_ENABLE(SoGLRenderAction, SoGLModelMatrixElement);

  SO_ENABLE(SoPickAction, SoModelMatrixElement);

  SO_ENABLE(SoCallbackAction, SoModelMatrixElement);

  SO_ENABLE(SoGetPrimitiveCountAction, SoModelMatrixElement);
}