NAME

       SoGLMultiTextureMatrixElement -

       The SoGLMultiTextureMatrixElement class is used to update the OpenGL texture matrix.

       Since (for some weird reason) most OpenGL implementations have a very small texture matrix
       stack, and since the matrix stack also is broken on many OpenGL implementations, the
       texture matrix is always loaded into OpenGL. We do not push() and pop() matrices.

SYNOPSIS

       #include <Inventor/elements/SoGLMultiTextureMatrixElement.h>

       Inherits SoMultiTextureMatrixElement.

   Public Member Functions
       virtual void init (SoState *state)
       virtual void push (SoState *state)
       virtual void pop (SoState *state, const SoElement *prevTopElement)
       virtual void multElt (const int unit, const SbMatrix &matrix)
       virtual void setElt (const int unit, const SbMatrix &matrix)

   Static Public Member Functions
       static SoType getClassTypeId (void)
       static int getClassStackIndex (void)
       static void * createInstance (void)
       static void initClass (void)

   Protected Member Functions
       virtual ~SoGLMultiTextureMatrixElement ()

   Additional Inherited Members

Detailed Description

       The SoGLMultiTextureMatrixElement class is used to update the OpenGL texture matrix.

       Since (for some weird reason) most OpenGL implementations have a very small texture matrix
       stack, and since the matrix stack also is broken on many OpenGL implementations, the
       texture matrix is always loaded into OpenGL. We do not push() and pop() matrices.

Constructor & Destructor Documentation

   SoGLMultiTextureMatrixElement::~SoGLMultiTextureMatrixElement (void) [protected],  [virtual]
       The destructor.

Member Function Documentation

   void * SoGLMultiTextureMatrixElement::createInstance (void) [static]
       This API member is considered internal to the library, as it is not likely to be of
       interest to the application programmer.

   void SoGLMultiTextureMatrixElement::init (SoState *state) [virtual]
       This function initializes the element type in the given SoState. It is called for the
       first element of each enabled element type in SoState objects.

       Reimplemented from SoMultiTextureMatrixElement.

   void SoGLMultiTextureMatrixElement::push (SoState *state) [virtual]
       This method is called every time a new element is required in one of the stacks. This
       happens when a writable element is requested, using SoState::getElement() or indirectly
       SoElement::getElement(), and the depth of the current element is less than the state
       depth.

       Override this method if your element needs to copy data from the previous top of stack.
       The push() method is called on the new element, and the previous element can be found
       using SoElement::getNextInStack().

       Reimplemented from SoMultiTextureMatrixElement.

   void SoGLMultiTextureMatrixElement::pop (SoState *state, const SoElement *prevTopElement)
       [virtual]
       This method is callled when the state is popped, and the depth of the element is bigger
       than the current state depth. pop() is called on the new top of stack, and a pointer to
       the previous top of stack is passed in prevTopElement.

       Override this method if you need to copy some state information from the previous top of
       stack.

       Reimplemented from SoElement.

   void SoGLMultiTextureMatrixElement::multElt (const intunit, const SbMatrix &matrix) [virtual]
       virtual method which is called from mult(). Multiplies matrix into element matrix.

       Reimplemented from SoMultiTextureMatrixElement.

   void SoGLMultiTextureMatrixElement::setElt (const intunit, const SbMatrix &matrix) [virtual]
       virtual method which is called from set(). Sets matrix intp element matrix.

       Reimplemented from SoMultiTextureMatrixElement.

Author

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