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SoIndexedNurbsSurface.3coin2
Langue: en
Version: 380965 (fedora - 01/12/10)
Section: 3 (Bibliothèques de fonctions)
Sommaire
- NAME
- SYNOPSIS
- Detailed Description
- Constructor & Destructor Documentation
- Member Function Documentation
- void SoIndexedNurbsSurface::initClass (void) [static]Sets up initialization for data common to all instances of this class, like submitting necessary information to the Coin type system.
- void SoIndexedNurbsSurface::GLRender (SoGLRenderAction * action) [virtual]Action method for the SoGLRenderAction.
- void SoIndexedNurbsSurface::rayPick (SoRayPickAction * action) [virtual]Calculates picked point based on primitives generated by subclasses.
- void SoIndexedNurbsSurface::getPrimitiveCount (SoGetPrimitiveCountAction * action) [virtual]Action method for the SoGetPrimitiveCountAction.
- void SoIndexedNurbsSurface::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 SoIndexedNurbsSurface::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().)
- void SoIndexedNurbsSurface::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.
- SoDetail * SoIndexedNurbsSurface::createTriangleDetail (SoRayPickAction * action, const SoPrimitiveVertex * v1, const SoPrimitiveVertex * v2, const SoPrimitiveVertex * v3, SoPickedPoint * pp) [protected, virtual]Will create triangle detail for a SoPickedPoint. This method will only be called internally, when generatePrimitives() is used for picking (SoShape::rayPick() is not overridden).
- Member Data Documentation
- SoSFInt32 SoIndexedNurbsSurface::numUControlPointsNumber of control points in the U direction.
- SoSFInt32 SoIndexedNurbsSurface::numVControlPointsNumber of control points in the V direction.
- SoMFInt32 SoIndexedNurbsSurface::coordIndexThe coordinate control point indices.
- SoMFFloat SoIndexedNurbsSurface::uKnotVectorThe Bezier knot vector for the U direction.
- SoMFFloat SoIndexedNurbsSurface::vKnotVectorThe Bezier knot vector for the V direction.
- SoSFInt32 SoIndexedNurbsSurface::numSControlPointsNumber of control points in the S direction.
- SoSFInt32 SoIndexedNurbsSurface::numTControlPointsNumber of control points in the T direction.
- SoMFInt32 SoIndexedNurbsSurface::textureCoordIndexThe texture coordinate control point indices.
- SoMFFloat SoIndexedNurbsSurface::sKnotVectorThe Bezier knot vector for the S direction.
- SoMFFloat SoIndexedNurbsSurface::tKnotVectorThe Bezier knot vector for the T direction.
- Author
NAME
SoIndexedNurbsSurface -The SoIndexedNurbsSurface class can be used to render NURBS surfaces.
It is very similar to the SoNurbsSurface class, but controlpoints can be specified using indices.
SYNOPSIS
#include <Inventor/nodes/SoIndexedNurbsSurface.h>
Inherits SoShape.
Public Member Functions
SoIndexedNurbsSurface (void)
virtual void GLRender (SoGLRenderAction *action)
virtual void rayPick (SoRayPickAction *action)
virtual void getPrimitiveCount (SoGetPrimitiveCountAction *action)
void sendPrimitive (SoAction *, SoPrimitiveVertex *)
Static Public Member Functions
static void initClass (void)
Public Attributes
SoSFInt32 numUControlPoints
SoSFInt32 numVControlPoints
SoMFInt32 coordIndex
SoMFFloat uKnotVector
SoMFFloat vKnotVector
SoSFInt32 numSControlPoints
SoSFInt32 numTControlPoints
SoMFInt32 textureCoordIndex
SoMFFloat sKnotVector
SoMFFloat tKnotVector
Protected Member Functions
virtual ~SoIndexedNurbsSurface ()
virtual void generatePrimitives (SoAction *action)
virtual void computeBBox (SoAction *action, SbBox3f &box, SbVec3f ¢er)
SoDetail * createTriangleDetail (SoRayPickAction *action, const SoPrimitiveVertex *v1, const SoPrimitiveVertex *v2, const SoPrimitiveVertex *v3, SoPickedPoint *pp)
Friends
class SoIndexedNurbsSurfaceP
Detailed Description
The SoIndexedNurbsSurface class can be used to render NURBS surfaces.
It is very similar to the SoNurbsSurface class, but controlpoints can be specified using indices.
FILE FORMAT/DEFAULTS:
IndexedNurbsSurface { numUControlPoints 0 numVControlPoints 0 coordIndex 0 uKnotVector 0 vKnotVector 0 numSControlPoints 0 numTControlPoints 0 textureCoordIndex -1 sKnotVector 0 tKnotVector 0 }
Constructor & Destructor Documentation
SoIndexedNurbsSurface::SoIndexedNurbsSurface (void)Constructor.
References coordIndex, numSControlPoints, numTControlPoints, numUControlPoints, numVControlPoints, sKnotVector, textureCoordIndex, tKnotVector, uKnotVector, and vKnotVector.
SoIndexedNurbsSurface::~SoIndexedNurbsSurface () [protected, virtual]Destructor.
Member Function Documentation
void SoIndexedNurbsSurface::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 SoIndexedNurbsSurface::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.
References SoAction::getState(), and SoShape::shouldGLRender().
void SoIndexedNurbsSurface::rayPick (SoRayPickAction * action) [virtual]Calculates picked point based on primitives generated by subclasses.
Reimplemented from SoShape.
References SoAction::getState(), SoState::pop(), SoDebugError::postWarning(), SoState::push(), SoFieldContainer::set(), and SoShape::shouldRayPick().
void SoIndexedNurbsSurface::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 SoIndexedNurbsSurface::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 SoIndexedNurbsSurface::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 SoIndexedNurbsSurface::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.
References coordIndex, SbBox3f::extendBy(), SoMField::getNum(), SbVec4f::getReal(), SoAction::getState(), SoMFInt32::getValues(), and SbBox3f::makeEmpty().
SoDetail * SoIndexedNurbsSurface::createTriangleDetail (SoRayPickAction * action, const SoPrimitiveVertex * v1, const SoPrimitiveVertex * v2, const SoPrimitiveVertex * v3, SoPickedPoint * pp) [protected, virtual]Will create triangle detail for a SoPickedPoint. This method will only be called internally, when generatePrimitives() is used for picking (SoShape::rayPick() is not overridden).
This method returns NULL in Open Inventor, and subclasses will need to override this method to create details for a SoPickedPoint.
This is not necessary with Coin. Of course, if you choose to override it, it will work in the same way as Open Inventor.
For this to work, you must supply a face or line detail when generating primitives. If you supply NULL for the detail argument in SoShape::beginShape(), you'll have to override this method.
Reimplemented from SoShape.
Member Data Documentation
SoSFInt32 SoIndexedNurbsSurface::numUControlPointsNumber of control points in the U direction.
Referenced by SoIndexedNurbsSurface().
SoSFInt32 SoIndexedNurbsSurface::numVControlPointsNumber of control points in the V direction.
Referenced by SoIndexedNurbsSurface().
SoMFInt32 SoIndexedNurbsSurface::coordIndexThe coordinate control point indices.
Referenced by computeBBox(), and SoIndexedNurbsSurface().
SoMFFloat SoIndexedNurbsSurface::uKnotVectorThe Bezier knot vector for the U direction.
Referenced by SoIndexedNurbsSurface().
SoMFFloat SoIndexedNurbsSurface::vKnotVectorThe Bezier knot vector for the V direction.
Referenced by SoIndexedNurbsSurface().
SoSFInt32 SoIndexedNurbsSurface::numSControlPointsNumber of control points in the S direction.
Referenced by SoIndexedNurbsSurface().
SoSFInt32 SoIndexedNurbsSurface::numTControlPointsNumber of control points in the T direction.
Referenced by SoIndexedNurbsSurface().
SoMFInt32 SoIndexedNurbsSurface::textureCoordIndexThe texture coordinate control point indices.
Referenced by SoIndexedNurbsSurface().
SoMFFloat SoIndexedNurbsSurface::sKnotVectorThe Bezier knot vector for the S direction.
Referenced by SoIndexedNurbsSurface().
SoMFFloat SoIndexedNurbsSurface::tKnotVectorThe Bezier knot vector for the T direction.
Referenced by SoIndexedNurbsSurface().
Author
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