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SoPointSet Class Reference

The SoPointSet class is used to display a set of 3D points. More...

#include <Inventor/nodes/SoPointSet.h>

Inheritance diagram for SoPointSet::

List of all members.

Public Methods
	SoPointSet (void)
virtual void	GLRender (SoGLRenderAction *action)
virtual void	getBoundingBox (SoGetBoundingBoxAction *action)
virtual void	getPrimitiveCount (SoGetPrimitiveCountAction *action)
Static Public Methods
void	initClass (void)
Public Attributes
SoSFInt32	numPoints
Protected Methods
virtual	~SoPointSet ()
virtual void	generatePrimitives (SoAction *action)
virtual void	computeBBox (SoAction *action, SbBox3f &box, SbVec3f &center)
virtual SbBool	generateDefaultNormals (SoState *, SoNormalCache *nc)
virtual SbBool	generateDefaultNormals (SoState *state, SoNormalBundle *bundle)

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Detailed Description

The SoPointSet class is used to display a set of 3D points.

This node either uses the coordinates currently on the state (typically set up by a leading SoCoordinate3 node in the scenegraph) or from a SoVertexProperty node attached to this node to render a set of 3D points.

The SoPointSet::numPoints field specifies the number of points in the coordinate set which should be rendered (or otherwise handled by traversal actions).

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Constructor & Destructor Documentation

SoPointSet::SoPointSet (  void )

Constructor.

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

Destructor.

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Member Function Documentation

void SoPointSet::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 SoNonIndexedShape. Reimplemented in SoMarkerSet.

void SoPointSet::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 SoShape. Reimplemented in SoMarkerSet.

void SoPointSet::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 SoShape.

void SoPointSet::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 SoShape. Reimplemented in SoMarkerSet.

void SoPointSet::generatePrimitives (  SoAction * action )  [protected, virtual]

For internal use only. Reimplemented from SoShape.

void SoPointSet::computeBBox (  SoAction * action, SbBox3f & box, SbVec3f & center )  [protected, virtual]

For internal use only. Reimplemented from SoShape.

SbBool SoPointSet::generateDefaultNormals (  SoState * state, SoNormalCache * nc )  [protected, virtual]

Overloaded to clear normal cache. Reimplemented from SoVertexShape.

SbBool SoPointSet::generateDefaultNormals (  SoState * state, SoNormalBundle * bundle )  [protected, virtual]

Overloaded to avoid compiler warnings. Reimplemented from SoVertexShape.

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Member Data Documentation

SoSFInt32 SoPointSet::numPoints

Used to specify number of points in the point set. Coordinates for the points will be taken from the state stack's set of 3D coordinates, typically set up by a leading SoCoordinate3 node. If this field is equal to -1 (the default value) all coordinates currently on the state will be rendered or otherwise handled by traversal actions. SoPointSet inherits the field SoNonIndexedShape::startIndex, which specifies the start index for points from the current state set of coordinates. Please note that this field has been obsoleted, but is still provided for compatibility.

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

• SoPointSet.cpp
• SoPointSet.h

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