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SoTriangleStripSet Class Reference

The SoTriangleStripSet class is used to render and control non-indexed triangle strips. More...

#include <Inventor/nodes/SoTriangleStripSet.h>

Inheritance diagram for SoTriangleStripSet::

List of all members.

Public Methods
	SoTriangleStripSet (void)
virtual void	GLRender (SoGLRenderAction *action)
virtual void	getPrimitiveCount (SoGetPrimitiveCountAction *action)
virtual SbBool	generateDefaultNormals (SoState *state, SoNormalBundle *nb)
Static Public Methods
void	initClass (void)
Public Attributes
SoMFInt32	numVertices
Protected Methods
virtual	~SoTriangleStripSet ()
virtual void	generatePrimitives (SoAction *action)
virtual void	computeBBox (SoAction *action, SbBox3f &box, SbVec3f &center)
virtual SbBool	generateDefaultNormals (SoState *, SoNormalCache *)

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Detailed Description

The SoTriangleStripSet class is used to render and control non-indexed triangle strips.

Triangle strips are specified using the numVertices field. Coordinates, normals, materials and texture coordinates are fetched in order from the current state or from the vertexProperty node if set. For example, if numVertices is set to [3, 4, 5, 3], this node would specify a triangle from coordinates 0, 1 and 2, a triangle strip from coordinates 3, 4, 5 and 6, a triangle strip from coordinates 7, 8, 9, 10 and 11 and finally a triangle from coordinates 12, 13, 14.

Strips are converted into triangles the way OpenGL does it, of course.

Binding PER_PART (per strip), PER_VERTEX, PER_FACE or OVERALL can be set for material, and normals. The default material binding is OVERALL. The default normal binding is PER_VERTEX.

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Constructor & Destructor Documentation

SoTriangleStripSet::SoTriangleStripSet (  void )

Constructor.

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

Destructor.

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Member Function Documentation

void SoTriangleStripSet::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.

void sogl_nits_m3_n3_t1 void SoTriangleStripSet::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.

void SoTriangleStripSet::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.

SbBool SoTriangleStripSet::generateDefaultNormals (  SoState * state, SoNormalBundle * nb )  [virtual]

Overloaded to return FALSE. Normals are generated in normal cache, Reimplemented from SoVertexShape.

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

For internal use only. Reimplemented from SoShape.

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

For internal use only. Reimplemented from SoShape.

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

Subclasses should overload this method to generate default normals using the SoNormalCache class. This is more effective than using SoNormalGenerator. Return TRUE if normals were generated, FALSE otherwise. Default method just returns FALSE. This method is not part of the original OIV API. Do not overload it if you intend to create a node that can be used on both Coin and OIV. Reimplemented from SoVertexShape.

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Member Data Documentation

SoMFInt32 SoTriangleStripSet::numVertices

Specifies the number of vertices in each triangle strip. The vertices are fetched from the current coordinate node, or from the vertexProperty field if present.

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

• SoTriangleStripSet.cpp
• SoTriangleStripSet.h

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