SoIndexedNurbsCurve Class Reference
[Node Classes]

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. More...

#include <Inventor/nodes/SoIndexedNurbsCurve.h>

Inheritance diagram for SoIndexedNurbsCurve:

List of all members.

Public Member Functions
	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 Member Functions
static void	initClass (void)
	Sets up initialization for data common to all instances of this class, like submitting necessary information to the Coin type system.
Public Attributes
SoSFInt32	numControlPoints
SoMFInt32	coordIndex
SoMFFloat	knotVector
Protected Member Functions
virtual	~SoIndexedNurbsCurve ()
virtual void	generatePrimitives (SoAction *action)
virtual void	computeBBox (SoAction *action, SbBox3f &box, SbVec3f &center)
virtual SoDetail *	createLineSegmentDetail (SoRayPickAction *action, const SoPrimitiveVertex *v1, const SoPrimitiveVertex *v2, SoPickedPoint *pp)

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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.

FILE FORMAT/DEFAULTS:

    IndexedNurbsCurve {
        numControlPoints 0
        coordIndex 0
        knotVector 0
    }

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Constructor & Destructor Documentation

SoIndexedNurbsCurve::SoIndexedNurbsCurve

(

void

)

Constructor.

SoIndexedNurbsCurve::~SoIndexedNurbsCurve

(

)

[protected, virtual]

Destructor.

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Member Function Documentation

void SoIndexedNurbsCurve::rayPick

(

SoRayPickAction *

action

)

[virtual]

Calculates picked point based on primitives generated by subclasses.

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]

The method implements action behavior for shape nodes for SoCallbackAction. It is invoked from SoShape::callback(). (Subclasses should not override SoNode::callback().)

The subclass implementations uses the convenience methods SoShape::beginShape(), SoShape::shapeVertex(), and SoShape::endShape(), with SoDetail instances, to pass the primitives making up the shape back to the caller.

Implements 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.

Implements SoShape.

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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.

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

• SoIndexedNurbsCurve.h
• SoIndexedNurbsCurve.cpp