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SoIndexedNurbsCurve Class Reference

The SoIndexedNurbsCurve class is a node for representing smooth curves. More...

#include <Inventor/nodes/SoIndexedNurbsCurve.h>

Inheritance diagram for SoIndexedNurbsCurve::

SoShape SoNode SoFieldContainer SoBase List of all members.

Public Methods

 SoIndexedNurbsCurve (void)
virtual void GLRender (SoGLRenderAction *action)
virtual void rayPick (SoRayPickAction *action)
virtual void getPrimitiveCount (SoGetPrimitiveCountAction *action)
virtual void getBoundingBox (SoGetBoundingBoxAction *action)
void sendPrimitive (SoAction *, SoPrimitiveVertex *)

Static Public Methods

void initClass (void)

Public Attributes

SoSFInt32 numControlPoints
SoMFInt32 coordIndex
SoMFFloat knotVector

Protected Methods

virtual ~SoIndexedNurbsCurve ()
virtual void generatePrimitives (SoAction *action)
virtual void computeBBox (SoAction *action, SbBox3f &box, SbVec3f &center)
virtual SoDetailcreateLineSegmentDetail (SoRayPickAction *action, const SoPrimitiveVertex *v1, const SoPrimitiveVertex *v2, SoPickedPoint *pp)

Detailed Description

The SoIndexedNurbsCurve class is a node for representing smooth curves.

Explaining NURBS is beyond the scope of this documentation. If you are unfamiliar with the principles of representing smooth curves and surfaces when doing 3D visualization, we recommend finding a good book on the subject.


Constructor & Destructor Documentation

SoIndexedNurbsCurve::SoIndexedNurbsCurve void
 

Constructor.

SoIndexedNurbsCurve::~SoIndexedNurbsCurve [protected, virtual]
 

Destructor.


Member Function Documentation

void SoIndexedNurbsCurve::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 SoShape.

void SoIndexedNurbsCurve::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 SoIndexedNurbsCurve::rayPick SoRayPickAction * action [virtual]
 

Calculates picked point based on primitives generated by subclasses.

Reimplemented from SoShape.

void SoIndexedNurbsCurve::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 SoIndexedNurbsCurve::getBoundingBox SoGetBoundingBoxAction * action [virtual]
 

Redefined to notify open caches that this shape contains lines.

Reimplemented from SoShape.

void SoIndexedNurbsCurve::sendPrimitive SoAction * ,
SoPrimitiveVertex *
 

This method is part of the original SGI Inventor API, but not implemented in Coin, as it looks like a method that should probably have been private in Open Inventor.

void SoIndexedNurbsCurve::generatePrimitives SoAction * action [protected, virtual]
 

For internal use only.

Reimplemented from SoShape.

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

Calculates the bounding box of all control points, and sets the center to the average of these points.

Reimplemented from SoShape.

SoDetail * SoIndexedNurbsCurve::createLineSegmentDetail SoRayPickAction * action,
const SoPrimitiveVertex * v1,
const SoPrimitiveVertex * v2,
SoPickedPoint * pp
[protected, virtual]
 

Overloaded to return NULL.

Reimplemented from SoShape.


Member Data Documentation

SoSFInt32 SoIndexedNurbsCurve::numControlPoints
 

Number of control points for this curve.

SoMFInt32 SoIndexedNurbsCurve::coordIndex
 

The control point indices. Supply at least numControlPoint indices.

SoMFFloat SoIndexedNurbsCurve::knotVector
 

The knot vector.


The documentation for this class was generated from the following files:
Generated at Tue Mar 5 03:31:25 2002 for Coin by doxygen1.2.9 written by Dimitri van Heesch, © 1997-2001