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Public Member Functions | Static Public Member Functions | Public Attributes | Protected Member Functions

SoMultipleCopy Class Reference

The SoMultipleCopy class redraws it's children multiple times at different transformations.The SoMultipleCopy group node duplicates it's children nodes / subgraphs without using additional memory resources. More...

#include <Inventor/nodes/SoMultipleCopy.h>

Inheritance diagram for SoMultipleCopy:
SoGroup SoNode SoFieldContainer SoBase

List of all members.

Public Member Functions

 SoMultipleCopy (void)
virtual SbBool affectsState (void) const
virtual void doAction (SoAction *action)
virtual void callback (SoCallbackAction *action)
virtual void GLRender (SoGLRenderAction *action)
virtual void pick (SoPickAction *action)
virtual void getBoundingBox (SoGetBoundingBoxAction *action)
virtual void handleEvent (SoHandleEventAction *action)
virtual void getMatrix (SoGetMatrixAction *action)
virtual void search (SoSearchAction *action)
virtual void getPrimitiveCount (SoGetPrimitiveCountAction *action)
virtual void audioRender (SoAudioRenderAction *action)

Static Public Member Functions

static void initClass (void)

Public Attributes

SoMFMatrix matrix

Protected Member Functions

virtual ~SoMultipleCopy ()

Detailed Description

The SoMultipleCopy class redraws it's children multiple times at different transformations.

The SoMultipleCopy group node duplicates it's children nodes / subgraphs without using additional memory resources.

It can do general transformations (translations, rotation and scaling) for it's children. Apart from transformations, the appearance of it's children will be identical.

FILE FORMAT/DEFAULTS:

    MultipleCopy {
        matrix 1 0 0 0
        0 1 0 0
        0 0 1 0
        0 0 0 1
    }
See also:
SoArray

Constructor & Destructor Documentation

SoMultipleCopy::SoMultipleCopy ( void  )

Constructor.

References SbMatrix::identity(), and matrix.

SoMultipleCopy::~SoMultipleCopy ( ) [protected, virtual]

Destructor.


Member Function Documentation

void SoMultipleCopy::initClass ( void  ) [static]

Sets up initialization for data common to all instances of this class, like submitting necessary information to the Coin type system.

Reimplemented from SoGroup.

SbBool SoMultipleCopy::affectsState ( void  ) const [virtual]

Returns TRUE if the node could have any effect on the state during traversal.

If it returns FALSE, no data in the traversal-state will change from the pre-traversal state to the post-traversal state. The SoSeparator node will for instance return FALSE, as it pushes and pops the state before and after traversal of its children. All SoShape nodes will also return FALSE, as just pushing out geometry data to the rendering engine won't affect the actual rendering state.

The default method returns TRUE, on a "better safe than sorry" philosophy.

Reimplemented from SoNode.

void SoMultipleCopy::doAction ( SoAction action) [virtual]

This function performs the typical operation of a node for any action.

Reimplemented from SoGroup.

References SoGroup::doAction(), SoMField::getNum(), SoAction::getState(), matrix, SoState::pop(), SoState::push(), and SoFieldContainer::set().

Referenced by audioRender(), callback(), getPrimitiveCount(), GLRender(), and pick().

void SoMultipleCopy::callback ( SoCallbackAction action) [virtual]

Action method for SoCallbackAction.

Simply updates the state according to how the node behaves for the render action, so the application programmer can use the SoCallbackAction for extracting information about the scene graph.

Reimplemented from SoGroup.

References doAction().

void SoMultipleCopy::GLRender ( SoGLRenderAction action) [virtual]

Action method for the SoGLRenderAction.

This is called during rendering traversals. Nodes influencing the rendering state in any way or who wants to throw geometry primitives at OpenGL overrides this method.

Reimplemented from SoGroup.

References doAction().

void SoMultipleCopy::pick ( SoPickAction action) [virtual]

Action method for SoPickAction.

Does common processing for SoPickAction action instances.

Reimplemented from SoGroup.

References doAction().

void SoMultipleCopy::getBoundingBox ( SoGetBoundingBoxAction action) [virtual]

Action method for the SoGetBoundingBoxAction.

Calculates bounding box and center coordinates for node and modifies the values of the action to encompass the bounding box for this node and to shift the center point for the scene more towards the one for this node.

Nodes influencing how geometry nodes calculates their bounding box also overrides this method to change the relevant state variables.

Reimplemented from SoGroup.

References SbXfBox3f::extendBy(), SoGroup::getBoundingBox(), SbXfBox3f::getCenter(), SoMField::getNum(), SoGetBoundingBoxAction::getXfBoundingBox(), SbMatrix::identity(), SbBox3f::isEmpty(), SbBox3f::makeEmpty(), matrix, SoGetBoundingBoxAction::resetCenter(), SoGetBoundingBoxAction::setCenter(), SbXfBox3f::setTransform(), and SbXfBox3f::transform().

void SoMultipleCopy::handleEvent ( SoHandleEventAction action) [virtual]

Action method for SoHandleEventAction.

Inspects the event data from action, and processes it if it is something which this node should react to.

Nodes influencing relevant state variables for how event handling is done also overrides this method.

Reimplemented from SoGroup.

References SoGroup::handleEvent().

void SoMultipleCopy::getMatrix ( SoGetMatrixAction action) [virtual]

Action method for SoGetMatrixAction.

Updates action by accumulating with the transformation matrix of this node (if any).

Reimplemented from SoGroup.

References SoGroup::getMatrix().

void SoMultipleCopy::search ( SoSearchAction action) [virtual]

Action method for SoSearchAction.

Compares the search criteria from the action to see if this node is a match. Searching is done by matching up all criteria set up in the SoSearchAction -- if any of the requested criteria is a miss, the search is not deemed successful for the node.

See also:
SoSearchAction

Reimplemented from SoGroup.

References SoAction::getState(), SoState::pop(), SoState::push(), SoGroup::search(), and SoFieldContainer::set().

void SoMultipleCopy::getPrimitiveCount ( SoGetPrimitiveCountAction action) [virtual]

Action method for the SoGetPrimitiveCountAction.

Calculates the number of triangle, line segment and point primitives for the node and adds these to the counters of the action.

Nodes influencing how geometry nodes calculates their primitive count also overrides this method to change the relevant state variables.

Reimplemented from SoGroup.

References doAction().

void SoMultipleCopy::audioRender ( SoAudioRenderAction action) [virtual]

Action method for SoAudioRenderAction.

Does common processing for SoAudioRenderAction action instances.

Reimplemented from SoGroup.

References doAction().


Member Data Documentation

A set of geometry transformation matrices.

The number of duplicated redraws of the child geometry will be the same as the number of matrices specified in this field. Ie, each duplication will be transformed according to a transformation matrix.

The default value of the field is to contain just a single identity matrix.

Referenced by doAction(), getBoundingBox(), and SoMultipleCopy().


The documentation for this class was generated from the following files:

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