NAME
SoGLViewingMatrixElement -
The SoGLViewingMatrixElement class is used to store the current viewing
matrix.
The viewing matrix contains the inverse camera coordinate system
matrix. The camera coordinate system is built from the field values in
the current SoCamera (currently either SoPerspectiveCamera or
SoOrthographicCamera) and any transformations prior to the camera in
the scene graph.
SYNOPSIS
#include <Inventor/elements/SoGLViewingMatrixElement.h>
Inherits SoViewingMatrixElement.
Public Member Functions
virtual void init (SoState *state)
FIXME: write doc.
virtual void push (SoState *state)
virtual void pop (SoState *state, const SoElement *prevTopElement)
Static Public Member Functions
static void initClass (void)
static uint32_t getNodeId (SoState *const state)
static SbMatrix getResetMatrix (SoState *state)
Protected Member Functions
virtual ~SoGLViewingMatrixElement ()
virtual void setElt (const SbMatrix &matrix)
Detailed Description
The SoGLViewingMatrixElement class is used to store the current viewing
matrix.
The viewing matrix contains the inverse camera coordinate system
matrix. The camera coordinate system is built from the field values in
the current SoCamera (currently either SoPerspectiveCamera or
SoOrthographicCamera) and any transformations prior to the camera in
the scene graph.
Constructor & Destructor Documentation
SoGLViewingMatrixElement::~SoGLViewingMatrixElement (void) [protected,
virtual] The destructor.
Member Function Documentation
void SoGLViewingMatrixElement::initClass (void) [static] This static method
initializes static data for the SoViewingMatrixElement class.
Reimplemented from SoViewingMatrixElement.
uint32_t SoGLViewingMatrixElement::getNodeId (SoState *const state)
[static] Returns the node id of the current camera node. This is used
by SoGLModelMatrixElement to detect a change in the viewing matrix
inside an SoTransformSeparator node.
SbMatrix SoGLViewingMatrixElement::getResetMatrix (SoState * state)
[static] Returns the matrix that should be used by
SoGLModelMatrixElement when the transformation should be reset during
traversal (typically when encountering an SoResetTransform node). It is
not sufficient to simply load the viewing matrix, since the
transformations that were applied before the camera needs to be
accounted for.
This function is an extension for Coin, and it is not available in the
original SGI Open Inventor v2.1 API.
Since:
Coin 2.0
void SoGLViewingMatrixElement::setElt (const SbMatrix & matrix) [protected,
virtual] Sets the current viewing matrix.
Reimplemented from SoViewingMatrixElement.
Author
Generated automatically by Doxygen for Coin from the source code.