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/**************************************************************************\
*
* This file is part of the Coin 3D visualization library.
* Copyright (C) by Kongsberg Oil & Gas Technologies.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* ("GPL") version 2 as published by the Free Software Foundation.
* See the file LICENSE.GPL at the root directory of this source
* distribution for additional information about the GNU GPL.
*
* For using Coin with software that can not be combined with the GNU
* GPL, and for taking advantage of the additional benefits of our
* support services, please contact Kongsberg Oil & Gas Technologies
* about acquiring a Coin Professional Edition License.
*
* See http://www.coin3d.org/ for more information.
*
* Kongsberg Oil & Gas Technologies, Bygdoy Alle 5, 0257 Oslo, NORWAY.
* http://www.sim.no/ sales@sim.no coin-support@coin3d.org
*
\**************************************************************************/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif // HAVE_CONFIG_H
#ifdef HAVE_VRML97
/*!
\class SoVRMLIndexedShape SoVRMLIndexedShape.h Inventor/VRMLnodes/SoVRMLIndexedShape.h
\brief The SoVRMLIndexedShape class is a superclass for geometry that use indexes.
*/
/*!
\var SoMFInt32 SoVRMLIndexedShape::coordIndex
The coordinate index array.
*/
/*!
\var SoMFInt32 SoVRMLIndexedShape::colorIndex
The color index array.
*/
/*!
\var SoMFInt32 SoVRMLIndexedShape::normalIndex
The normal index array.
*/
/*!
\var SoMFInt32 SoVRMLIndexedShape::texCoordIndex
The texture coordinate index array.
*/
#include <Inventor/VRMLnodes/SoVRMLIndexedShape.h>
#include <Inventor/VRMLnodes/SoVRMLMacros.h>
#include <Inventor/VRMLnodes/SoVRMLCoordinate.h>
#include <Inventor/caches/SoNormalCache.h>
#include <Inventor/actions/SoAction.h>
#include <Inventor/errors/SoDebugError.h>
#include "nodes/SoSubNodeP.h"
SO_NODE_ABSTRACT_SOURCE(SoVRMLIndexedShape);
// Doc in parent
void
SoVRMLIndexedShape::initClass(void)
{
SO_NODE_INTERNAL_INIT_ABSTRACT_CLASS(SoVRMLIndexedShape, SO_VRML97_NODE_TYPE);
}
/*!
Constructor.
*/
SoVRMLIndexedShape::SoVRMLIndexedShape(void)
{
SO_VRMLNODE_INTERNAL_CONSTRUCTOR(SoVRMLIndexedShape);
SO_VRMLNODE_ADD_EMPTY_MFIELD(coordIndex);
SO_VRMLNODE_ADD_EMPTY_MFIELD(colorIndex);
SO_VRMLNODE_ADD_EMPTY_MFIELD(normalIndex);
SO_VRMLNODE_ADD_EMPTY_MFIELD(texCoordIndex);
}
/*!
Destructor.
*/
SoVRMLIndexedShape::~SoVRMLIndexedShape()
{
}
/*!
Convenience method that will fetch data needed for rendering or
generating primitives. Takes care of normal cache.
*/
SbBool
SoVRMLIndexedShape::getVertexData(SoState * state,
const SoCoordinateElement *& coords,
const SbVec3f *& normals,
const int32_t *& cindices,
const int32_t *& nindices,
const int32_t *& tindices,
const int32_t *& mindices,
int & numcindices,
const SbBool neednormals,
SbBool & normalcacheused)
{
SoVRMLVertexShape::getVertexData(state, coords, normals, neednormals);
cindices = this->coordIndex.getValues(0);
numcindices = this->coordIndex.getNum();
mindices = this->colorIndex.getValues(0);
if (this->colorIndex.getNum() <= 0 || mindices[0] < 0) mindices = NULL;
tindices = this->texCoordIndex.getValues(0);
if (this->texCoordIndex.getNum() <= 0 || tindices[0] < 0) tindices = NULL;
normalcacheused = FALSE;
nindices = NULL;
if (neednormals) {
nindices = this->normalIndex.getValues(0);
if (this->normalIndex.getNum() <= 0 || nindices[0] < 0) nindices = NULL;
if (normals == NULL) {
SoNormalCache * nc = this->generateAndReadLockNormalCache(state);
normals = nc->getNormals();
nindices = nc->getIndices();
normalcacheused = TRUE;
// if no normals were generated, unlock normal cache before
// returning
if (normals == NULL) {
this->readUnlockNormalCache();
normalcacheused = FALSE;
}
}
}
return TRUE;
}
// Doc in parent
void
SoVRMLIndexedShape::notify(SoNotList * list)
{
SoField * f = list->getLastField();
if (f == &this->coordIndex) {
SoNormalCache * nc = this->getNormalCache();
if (nc) nc->invalidate();
}
inherited::notify(list);
}
// Doc in parent
void
SoVRMLIndexedShape::computeBBox(SoAction * action, SbBox3f & box,
SbVec3f & center)
{
SoVRMLCoordinate * node = (SoVRMLCoordinate*) this->coord.getValue();
if (node == NULL) return;
int numCoords = node->point.getNum();
const SbVec3f * coords = node->point.getValues(0);
box.makeEmpty();
const int32_t * ptr = coordIndex.getValues(0);
const int32_t * endptr = ptr + coordIndex.getNum();
while (ptr < endptr) {
int idx = *ptr++;
if (idx >= numCoords) {
SoDebugError::post("SoVRMLIndexedShape::computeBBox",
"index @ %d: %d is out of bounds [%d, %d]",
(ptr - coordIndex.getValues(0)) / sizeof(*ptr),
idx, numCoords ? 0 : -1, numCoords - 1);
continue;
}
if (idx >= 0) box.extendBy(coords[idx]);
}
if (!box.isEmpty()) center = box.getCenter();
}
#endif // HAVE_VRML97
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