#include <Inventor/nodes/SoVertexShape.h>
Public Member Functions | |
virtual void | notify (SoNotList *nl) |
virtual SbBool | generateDefaultNormals (SoState *state, SoNormalBundle *bundle) |
virtual SbBool | generateDefaultNormals (SoState *state, SoNormalCache *cache) |
virtual void | write (SoWriteAction *action) |
Static Public Member Functions | |
static void | initClass (void) |
Public Attributes | |
SoSFNode | vertexProperty |
Protected Member Functions | |
SoVertexShape (void) | |
virtual | ~SoVertexShape () |
virtual SbBool | shouldGLRender (SoGLRenderAction *action) |
void | setNormalCache (SoState *const state, const int num, const SbVec3f *normals) |
SoNormalCache * | getNormalCache (void) const |
void | generateNormals (SoState *const state) |
void | getVertexData (SoState *state, const SoCoordinateElement *&coords, const SbVec3f *&normals, const SbBool neednormals) |
Basically, every polygon, line or point based shape will inherit this class. It contains methods for organizing the normal cache, and also holds the vertexProperty field which can be used to set vertex data inside the node.
SoVertexShape::SoVertexShape | ( | void | ) | [protected] |
Constructor.
SoVertexShape::~SoVertexShape | ( | ) | [protected, virtual] |
Destructor.
void SoVertexShape::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.
Reimplemented in SoFaceSet, SoIndexedFaceSet, SoIndexedLineSet, SoIndexedShape, SoIndexedTriangleStripSet, SoLineSet, SoMarkerSet, SoNonIndexedShape, SoPointSet, SoQuadMesh, and SoTriangleStripSet.
void SoVertexShape::notify | ( | SoNotList * | l | ) | [virtual] |
Notifies all auditors for this instance when changes are made.
Reimplemented from SoNode.
SbBool SoVertexShape::generateDefaultNormals | ( | SoState * | state, | |
SoNormalBundle * | bundle | |||
) | [virtual] |
Subclasses should override this method to generate default normals using the SoNormalBundle class. TRUE
should be returned if normals were generated, FALSE
otherwise. Default method returns FALSE
.
Reimplemented in SoFaceSet, SoIndexedFaceSet, SoIndexedTriangleStripSet, SoPointSet, SoQuadMesh, and SoTriangleStripSet.
SbBool SoVertexShape::generateDefaultNormals | ( | SoState * | state, | |
SoNormalCache * | cache | |||
) | [virtual] |
Subclasses should override 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 SGI Open Inventor API.
Reimplemented in SoFaceSet, SoIndexedFaceSet, SoIndexedTriangleStripSet, SoPointSet, SoQuadMesh, and SoTriangleStripSet.
void SoVertexShape::write | ( | SoWriteAction * | action | ) | [virtual] |
Action method for SoWriteAction.
Writes out a node object, and any connected nodes, engines etc, if necessary.
Reimplemented from SoNode.
SbBool SoVertexShape::shouldGLRender | ( | SoGLRenderAction * | action | ) | [protected, virtual] |
This API member is considered internal to the library, as it is not likely to be of interest to the application programmer.
Reimplemented from SoShape.
void SoVertexShape::setNormalCache | ( | SoState *const | state, | |
const int | num, | |||
const SbVec3f * | normals | |||
) | [protected] |
Sets normal cache to contain the normals specified by normals and num, and forces cache dependencies on coordinates, shape hints and crease angle.
SoNormalCache * SoVertexShape::getNormalCache | ( | void | ) | const [protected] |
Returns the current normal cache, or NULL if there is none.
void SoVertexShape::generateNormals | ( | SoState *const | state | ) | [protected] |
Convenience method that can be used by subclasses to create a new normal cache. It takes care of unrefing the old cache and pushing and popping the state to create element dependencies. This method is not part of the OIV API.
void SoVertexShape::getVertexData | ( | SoState * | state, | |
const SoCoordinateElement *& | coords, | |||
const SbVec3f *& | normals, | |||
const SbBool | neednormals | |||
) | [protected] |
Convenience method that returns the current coordinate and normal element. This method is not part of the OIV API.
If you set the vertexProperty field, it should be with an SoVertexProperty node. Otherwise it will simply be ignored. Nodetypes inheriting SoVertexShape will then get their coordinate data from the vertexProperty node instead of from the global traversal state.
The vertexProperty field of SoVertexShape-derived nodes breaks somewhat with the basic design of Open Inventor, as its contents are not passed to the global state. This is done to provide a simple path to highly optimized rendering of vertexbased shapes.