SoGLMultiTextureMatrixElement(3)

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

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)
Public Member Functions inherited from SoAccumulatedElement
virtual SbBool matches (const SoElement *element) const
Public Member Functions inherited from SoElement
const SoType getTypeId (void) const
int getStackIndex (void) const
void setDepth (const int depth)
int getDepth (void) const
virtual void print (FILE *file=stdout) const
virtual ~SoElement ()

  Static Public Member Functions
static SoType getClassTypeId (void)
static int getClassStackIndex (void)
static void * createInstance (void)
static void initClass (void)
Static Public Member Functions inherited from SoMultiTextureMatrixElement
static SoType getClassTypeId (void)
static int getClassStackIndex (void)
static void * createInstance (void)
static void initClass (void)
static void set (SoState *const state, SoNode *const node, const int unit, const SbMatrix &matrix)
static void mult (SoState *const state, SoNode *const node, const int unit, const SbMatrix &matrix)
static const SbMatrix & get (SoState *const state, const int unit=0)
static void makeIdentity (SoState *const state, SoNode *const node, const int unit=0)
static void set (SoState *const state, SoNode *const node, const SbMatrix &matrix)
static void mult (SoState *const state, SoNode *const node, const SbMatrix &matrix)
static void translateBy (SoState *const state, SoNode *const node, const SbVec3f &translation)
static void rotateBy (SoState *const state, SoNode *const node, const SbRotation &rotation)
static void scaleBy (SoState *const state, SoNode *const node, const SbVec3f &scaleFactor)
Static Public Member Functions inherited from SoAccumulatedElement
static SoType getClassTypeId (void)
static int getClassStackIndex (void)
static void initClass (void)
Static Public Member Functions inherited from SoElement
static void initClass (void)
static SoType getClassTypeId (void)
static int getClassStackIndex (void)
static void initElements (void)
static int getNumStackIndices (void)
static SoType getIdFromStackIndex (const int stackIndex)

  Protected Member Functions
virtual ~SoGLMultiTextureMatrixElement ()
Protected Member Functions inherited from SoMultiTextureMatrixElement
SoMultiTextureMatrixElement (void)
virtual ~SoMultiTextureMatrixElement ()
int getNumUnits () const
UnitData & getUnitData (const int unit)
const UnitData & getUnitData (const int unit) const
virtual const SbMatrix & getElt (const int unit) const
Protected Member Functions inherited from SoAccumulatedElement
virtual ~SoAccumulatedElement ()
void clearNodeIds (void)
void addNodeId (const SoNode *const node)
void setNodeId (const SoNode *const node)
void copyNodeIds (const SoAccumulatedElement *copyfrom)
virtual SoElement * copyMatchInfo (void) const
virtual void captureThis (SoState *state) const
Protected Member Functions inherited from SoElement
SoElement (void)
void capture (SoState *const state) const
void setTypeId (const SoType typeId)
void setStackIndex (const int index)
SoElement * getNextInStack (void) const
SoElement * getNextFree (void) const

  Additional Inherited Members
Static Protected Member Functions inherited from SoElement
static SoElement * getElement (SoState *const state, const int stackIndex)
static const SoElement * getConstElement (SoState *const state, const int stackIndex)
static int createStackIndex (const SoType id)
Protected Attributes inherited from SoAccumulatedElement
SbList< SbUniqueId > nodeIds
Protected Attributes inherited from SoElement
SoType typeId
int stackIndex
int depth
Static Protected Attributes inherited from SoElement
static int classStackIndex
static SoTypeList * stackToType

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]
Destructor.

Member Function Documentation

  SoType SoGLMultiTextureMatrixElement::getClassTypeId (void ) [static]
This static method returns the SoType object associated with objects of this class.

  int SoGLMultiTextureMatrixElement::getClassStackIndex (void ) [static]
This static method returns the state stack index for the class.

  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.
 Creates a new instance of the class type corresponding to the SoType object.

  void SoGLMultiTextureMatrixElement::initClass (void ) [static]
Initialize relevant common data for all instances, like the type system.

  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 called 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 int unit, const SbMatrix & matrix) [virtual]
virtual method which is called from mult(). Multiplies matrix into element matrix.

Reimplemented from SoMultiTextureMatrixElement.

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

Reimplemented from SoMultiTextureMatrixElement.

Author

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