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SoFaceSet Class Reference

The SoFaceSet class is used to render and organize non-indexed polygonal face data. More...

#include <Inventor/nodes/SoFaceSet.h>

Inheritance diagram for SoFaceSet::

List of all members.

Public Methods
	SoFaceSet (void)
virtual void	GLRender (SoGLRenderAction *action)
virtual SbBool	generateDefaultNormals (SoState *state, SoNormalBundle *nb)
virtual void	getPrimitiveCount (SoGetPrimitiveCountAction *action)
Static Public Methods
void	initClass (void)
Public Attributes
SoMFInt32	numVertices
Protected Methods
virtual	~SoFaceSet ()
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 SoFaceSet class is used to render and organize non-indexed polygonal face data.

Faces 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 tringle from coordinates 0, 1 and 2, a quad from coordinates 3, 4, 5 and 6, a polygon from coordinates 7, 8, 9, 10 and 11 and finally a triangle from coordinates 12, 13, 14.

Binding 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

SoFaceSet::SoFaceSet (  void )

Constructor.

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

Destructor.

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Member Function Documentation

void SoFaceSet::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_nifs_m2_n2_t1 void SoFaceSet::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.

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

Overloaded to return FALSE. Normals are genereted directly in normal cache for this shape. Reimplemented from SoVertexShape.

void SoFaceSet::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.

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

For internal use only. Reimplemented from SoShape.

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

For internal use only. Reimplemented from SoShape.

SbBool SoFaceSet::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 SoFaceSet::numVertices

Used to specify faces. Each entry specifies the number of coordinates in a face. The coordinates are taken in order from the state or from the vertexProperty node.

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

• SoFaceSet.cpp
• SoFaceSet.h

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