SoModelMatrixElement - Online Linux Manual PageSection : 3
Updated : Mon Jan 25 2021
Source : Version 4.0.0
Note : Coin

NAMESoModelMatrixElement − The SoModelMatrixElement class is used to manage the current transformation​.

SYNOPSIS
#include <Inventor/elements/SoModelMatrixElement​.h> Inherits SoAccumulatedElement​. Inherited by SoBBoxModelMatrixElement, and SoGLModelMatrixElement​.

Public Member Functionsvirtual void init (SoState *state)
virtual void push (SoState *state)
virtual SbBool matches (const SoElement *element) const
const SbMatrix & getModelMatrix (void) const

Static Public Member Functionsstatic SoType getClassTypeId (void)
static int getClassStackIndex (void)
static void * createInstance (void)
static void initClass (void)
static void makeIdentity (SoState *const state, SoNode *const node)
static void set (SoState *const state, SoNode *const node, const SbMatrix &matrix)
static void setCullMatrix (SoState *state, SoNode *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 SbMatrix pushMatrix (SoState *const state)
static void popMatrix (SoState *const state, const SbMatrix &matrix)
static const SbMatrix & getCombinedCullMatrix (SoState *const state)
static const SbMatrix & get (SoState *const state)
static const SbMatrix & get (SoState *const state, SbBool &isIdentity)

Protected Member Functionsvirtual ~SoModelMatrixElement ()
virtual void makeEltIdentity (void)
virtual void setElt (const SbMatrix &matrix)
virtual void multElt (const SbMatrix &matrix)
virtual void translateEltBy (const SbVec3f &translation)
virtual void rotateEltBy (const SbRotation &rotation)
virtual void scaleEltBy (const SbVec3f &scaleFactor)
virtual SbMatrix pushMatrixElt (void)
virtual void popMatrixElt (const SbMatrix &matrix)

Protected AttributesSbMatrix modelMatrix
SbMatrix cullMatrix
SbMatrix combinedMatrix
uint32_t flags

Additional Inherited Members

Detailed DescriptionThe SoModelMatrixElement class is used to manage the current transformation​. SoModelMatrixElement contains the object-to-world matrix​. The world-to-camera transformation is stored in the SoViewingMatrixElement class​. Note that one thing that can be a little confusing with the API is that SoModelMatrixElement does not contain the same matrix as the OpenGL GL_MODELVIEW matrix​. See also SoViewingMatrixElement

Constructor & Destructor Documentation

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

Member Function Documentation

void * SoModelMatrixElement::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 SoModelMatrixElement::initClass (void) [static]This static method initializes static data for the SoModelMatrixElement class​.

void SoModelMatrixElement::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 SoAccumulatedElement​. Reimplemented in SoGLModelMatrixElement, and SoBBoxModelMatrixElement​.

void SoModelMatrixElement::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 SoAccumulatedElement​. Reimplemented in SoGLModelMatrixElement, and SoBBoxModelMatrixElement​.

SbBool SoModelMatrixElement::matches (const SoElement * element) const [virtual]This function returns TRUE is the element matches another element (of the same class), with respect to cache validity​. If the application programmer's extension element has a matches() function, it should also have a copyMatchInfo() function​. Reimplemented from SoAccumulatedElement​.

void SoModelMatrixElement::makeIdentity (SoState *const state, SoNode *const node) [static]Sets the current model matrix to the identity matrix​.

void SoModelMatrixElement::set (SoState *const state, SoNode *const node, const SbMatrix & matrix) [static]Sets the current model matrix to matrix​.

void SoModelMatrixElement::setCullMatrix (SoState * state, SoNode * node, const SbMatrix & matrix) [static]Sets the current cull matrix​.

void SoModelMatrixElement::mult (SoState *const state, SoNode *const node, const SbMatrix & matrix) [static]Multiplies matrix into the model matrix​.

void SoModelMatrixElement::translateBy (SoState *const state, SoNode *const node, const SbVec3f & translation) [static]Appends translation to the model matrix​.

void SoModelMatrixElement::rotateBy (SoState *const state, SoNode *const node, const SbRotation & rotation) [static]Appends rotation to the model matrix​.

void SoModelMatrixElement::scaleBy (SoState *const state, SoNode *const node, const SbVec3f & scaleFactor) [static]Appends scaleFactor to the model matrix​.

SbMatrix SoModelMatrixElement::pushMatrix (SoState *const state) [static]Used by SoTransformSeparator to store and restore model matrix​. Don't use it for any other reason​.

void SoModelMatrixElement::popMatrix (SoState *const state, const SbMatrix & matrix) [static]Used by SoTransformSeparator to store and restore model matrix​. Don't use it for any other reason​.

const SbMatrix & SoModelMatrixElement::getCombinedCullMatrix (SoState *const state) [static]Returns the combined cull and model matrix​. This matrix is cached​.

const SbMatrix & SoModelMatrixElement::get (SoState *const state) [static]Returns the current model matrix​.

const SbMatrix & SoModelMatrixElement::get (SoState *const state, SbBool & isIdentity) [static]Returns the current model matrix​. Sets isIdentity to TRUE if the model matrix is known to be an identity matrix​.

void SoModelMatrixElement::makeEltIdentity (void) [protected], [virtual]virtual method which is called from the static method makeIdentity()​. Sets element model matrix to identity​. Reimplemented in SoBBoxModelMatrixElement, and SoGLModelMatrixElement​.

void SoModelMatrixElement::setElt (const SbMatrix & matrix) [protected], [virtual]virtual method which is called from the static method set()​. Sets element model matrix to matrix​. Reimplemented in SoGLModelMatrixElement, and SoBBoxModelMatrixElement​.

void SoModelMatrixElement::multElt (const SbMatrix & matrix) [protected], [virtual]virtual method which is called from the static method mult()​. Multiplies matrix into element model matrix​. Reimplemented in SoGLModelMatrixElement, and SoBBoxModelMatrixElement​.

void SoModelMatrixElement::translateEltBy (const SbVec3f & translation) [protected], [virtual]virtual method which is called from the static method translateBy()​. Appends translation to element model matrix​. Reimplemented in SoGLModelMatrixElement, and SoBBoxModelMatrixElement​.

void SoModelMatrixElement::rotateEltBy (const SbRotation & rotation) [protected], [virtual]virtual method which is called from the static method rotateBy()​. Appends rotation to element model matrix​. Reimplemented in SoGLModelMatrixElement, and SoBBoxModelMatrixElement​.

void SoModelMatrixElement::scaleEltBy (const SbVec3f & scaleFactor) [protected], [virtual]virtual method which is called from the static method scaleBy()​. Appends scaleFactor to element model matrix​. Reimplemented in SoGLModelMatrixElement, and SoBBoxModelMatrixElement​.

SbMatrix SoModelMatrixElement::pushMatrixElt (void) [protected], [virtual]virtual method which is called from the static method pushMatrix()​. Returns current model matrix​. Reimplemented in SoGLModelMatrixElement, and SoBBoxModelMatrixElement​.

void SoModelMatrixElement::popMatrixElt (const SbMatrix & matrix) [protected], [virtual]virtual method which is called from the static method popMatrix()​. Retores model matrix to the matrix returned from pushMatrix()​. Reimplemented in SoGLModelMatrixElement, and SoBBoxModelMatrixElement​.

Member Data Documentation

SoModelMatrixElement::modelMatrix [protected]FIXME: write doc​.

SoModelMatrixElement::cullMatrix [protected]FIXME: write doc​.

SoModelMatrixElement::combinedMatrix [protected]FIXME: write doc​.

SoModelMatrixElement::flags [protected]FIXME: write doc​.

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