SoNormalCache(3) Coin SoNormalCache(3)
NAME
SoNormalCache -
The SoNormalCache class is used to hold cached normals.
As an extension to the original SGI Open Inventor v2.1 API, it is also possible to generate normals using this class.
SYNOPSIS
#include <Inventor/caches/SoNormalCache.h>
Inherits SoCache.
Public Member Functions
SoNormalCache (SoState *const state)
virtual ~SoNormalCache ()
void set (const int num, const SbVec3f *const normals)
void set (SoNormalGenerator *generator)
int getNum (void) const
const SbVec3f * getNormals (void) const
int getNumIndices (void) const
const int32_t * getIndices (void) const
void generatePerVertex (const SbVec3f *const coords, const unsigned int numcoords, const int32_t *coordindices, const int numcoordindices,
const float crease_angle, const SbVec3f *facenormals=NULL, const int numfacenormals=-1, const SbBool ccw=TRUE, const SbBool
tristrip=FALSE)
void generatePerFace (const SbVec3f *const coords, const unsigned int numcoords, const int32_t *coordindices, const int numcoorindices,
const SbBool ccw)
void generatePerFaceStrip (const SbVec3f *const coords, const unsigned int numcoords, const int32_t *coordindices, const int
numcoorindices, const SbBool ccw)
void generatePerStrip (const SbVec3f *const coords, const unsigned int numcoords, const int32_t *coordindices, const int numcoorindices,
const SbBool ccw)
void generatePerVertexQuad (const SbVec3f *const coords, const unsigned int numcoords, const int vPerRow, const int vPerColumn, const
SbBool ccw)
void generatePerFaceQuad (const SbVec3f *const coords, const unsigned int numcoords, const int vPerRow, const int vPerColumn, const SbBool
ccw)
void generatePerRowQuad (const SbVec3f *const coords, const unsigned int numcoords, const int vPerRow, const int vPerColumn, const SbBool
ccw)
Additional Inherited Members
Detailed Description
The SoNormalCache class is used to hold cached normals.
As an extension to the original SGI Open Inventor v2.1 API, it is also possible to generate normals using this class.
It is more powerful and easier to use than the SoNormalGenerator class. It is possible to generate normals per vertex with indices (using
much less memory than plain per vertex normals), and it contains special methods to generate normals for triangle strips and quads.
Constructor &; Destructor Documentation
SoNormalCache::SoNormalCache (SoState *conststate)
Contructor with state being the current state.
SoNormalCache::~SoNormalCache () [virtual]
Destructor
Member Function Documentation
void SoNormalCache::set (const intnum, const SbVec3f *constnormals)
Sets an array of normals for this cache. The normals will not be deleted when the instance is deleted.
void SoNormalCache::set (SoNormalGenerator *generator)
Uses a normal generator in this cache. The normal generator will be deleted when the cache is deleted or reset.
int SoNormalCache::getNum (void) const
Returns the number of normals in the cache.
const SbVec3f * SoNormalCache::getNormals (void) const
Return a pointer to the normals in this cache.
int SoNormalCache::getNumIndices (void) const
Returns the number of indices in this cache. Normals are generated with PER_VERTEX_INDEXED binding.
const int32_t * SoNormalCache::getIndices (void) const
Returns the normal indices.
void SoNormalCache::generatePerVertex (const SbVec3f *constcoords, const unsigned intnumcoords, const int32_t *vindex, const intnumvi, const
floatcrease_angle, const SbVec3f *facenormals = NULL, const intnumfacenormals = -1, const SbBoolccw = TRUE, const SbBooltristrip = FALSE)
Generates normals for each vertex for each face. It is possible to specify face normals if these have been calculated somewhere else,
otherwise the face normals will be calculated before the vertex normals are calculated. tristrip should be TRUE if the geometry consists of
triangle strips.
void SoNormalCache::generatePerFace (const SbVec3f *constcoords, const unsigned intnumcoords, const int32_t *cind, const intnv, const
SbBoolccw)
Generates face normals for the faceset defined by coords and cind.
void SoNormalCache::generatePerFaceStrip (const SbVec3f *constcoords, const unsigned intnumcoords, const int32_t *cind, const intnv, const
SbBoolccw)
Generates face normals for triangle strips.
void SoNormalCache::generatePerStrip (const SbVec3f *constcoords, const unsigned intnumcoords, const int32_t *cind, const intnv, const
SbBoolccw)
Generates one normal per triangle strips (avarages all triangle normals).
void SoNormalCache::generatePerVertexQuad (const SbVec3f *constcoords, const unsigned intnumcoords, const intvPerRow, const intvPerColumn,
const SbBoolccw)
Generates PER_VERTEX normals for quad data.
void SoNormalCache::generatePerFaceQuad (const SbVec3f *constcoords, const unsigned intnumcoords, const intvPerRow, const intvPerColumn, const
SbBoolccw)
Generates per face normals for quad data.
void SoNormalCache::generatePerRowQuad (const SbVec3f *constcoords, const unsigned intnumcoords, const intvPerRow, const intvPerColumn, const
SbBoolccw)
Generates per row normals for quad data.
Author
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Version 3.1.3 Wed May 23 2012 SoNormalCache(3)