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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
*
\**************************************************************************/
/*!
\class SoPackedColor SoPackedColor.h Inventor/nodes/SoPackedColor.h
\brief The SoPackedColor class is a node for setting diffuse and transparency material values.
\ingroup nodes
This node provides a convenient way of setting diffuse colors and
transparency values with packed 32-bit RGBA vectors.
<b>FILE FORMAT/DEFAULTS:</b>
\code
PackedColor {
orderedRGBA 0xccccccff
}
\endcode
\sa SoBaseColor
*/
// *************************************************************************
// FIXME: the name of the "orderedRGBA" field was actually "rgba" in
// the version 2.0 Inventor file format, and the semantics was also
// different (reversed order). This means that Inventor 2.0 files with
// PackedColor nodes will not import properly at the moment. 20020508 mortene.
// *************************************************************************
#include <Inventor/nodes/SoPackedColor.h>
#include <Inventor/actions/SoCallbackAction.h>
#include <Inventor/actions/SoGLRenderAction.h>
#include <Inventor/elements/SoOverrideElement.h>
#include <Inventor/elements/SoGLLazyElement.h>
#include <Inventor/elements/SoGLVBOElement.h>
#include <Inventor/C/tidbits.h>
#include "nodes/SoSubNodeP.h"
#include "misc/SoVBO.h"
// *************************************************************************
/*!
\var SoMFUInt32 SoPackedColor::orderedRGBA
Set of packed 32-bit RGBA vectors.
The most significant 24 bits specifies 8 bits each for the red,
green and blue components.
The least significant 8 bits specifies the transparency value, where
0x00 means completely transparent, and 0xff completely opaque.
*/
// *************************************************************************
class SoPackedColorP {
public:
SoPackedColorP() : vbo(NULL) { }
~SoPackedColorP() { delete this->vbo; }
SbBool transparent;
SbBool checktransparent;
SoVBO * vbo;
};
#define PRIVATE(obj) obj->pimpl
SO_NODE_SOURCE(SoPackedColor);
/*!
Constructor.
*/
SoPackedColor::SoPackedColor()
{
PRIVATE(this) = new SoPackedColorP;
SO_NODE_INTERNAL_CONSTRUCTOR(SoPackedColor);
SO_NODE_ADD_FIELD(orderedRGBA, (0xccccccff));
PRIVATE(this)->checktransparent = FALSE;
PRIVATE(this)->transparent = FALSE;
}
/*!
Destructor.
*/
SoPackedColor::~SoPackedColor()
{
delete PRIVATE(this);
}
// Doc from superclass.
void
SoPackedColor::initClass(void)
{
SO_NODE_INTERNAL_INIT_CLASS(SoPackedColor, SO_FROM_INVENTOR_2_1);
SO_ENABLE(SoCallbackAction, SoLazyElement);
SO_ENABLE(SoGLRenderAction, SoGLLazyElement);
}
// Doc from superclass.
void
SoPackedColor::GLRender(SoGLRenderAction * action)
{
SoPackedColor::doAction(action);
}
// Doc from superclass.
void
SoPackedColor::doAction(SoAction * action)
{
(void) this->isTransparent(); // update cached value for transparent
SoState * state = action->getState();
const int num = this->orderedRGBA.getNum();
if (!this->orderedRGBA.isIgnored() &&
num > 0 &&
!SoOverrideElement::getDiffuseColorOverride(state)) {
SoLazyElement::setPacked(state, this,
num,
this->orderedRGBA.getValues(0),
PRIVATE(this)->transparent);
if (state->isElementEnabled(SoGLVBOElement::getClassStackIndex())) {
SoBase::staticDataLock();
SbBool setvbo = FALSE;
if (SoGLVBOElement::shouldCreateVBO(state, num)) {
SbBool dirty = FALSE;
setvbo = TRUE;
if (PRIVATE(this)->vbo == NULL) {
PRIVATE(this)->vbo = new SoVBO(GL_ARRAY_BUFFER, GL_STATIC_DRAW);
dirty = TRUE;
}
else if (PRIVATE(this)->vbo->getBufferDataId() != this->getNodeId()) {
dirty = TRUE;
}
if (dirty) {
if (coin_host_get_endianness() == COIN_HOST_IS_BIGENDIAN) {
PRIVATE(this)->vbo->setBufferData(this->orderedRGBA.getValues(0),
num*sizeof(uint32_t),
this->getNodeId());
}
else {
// sigh. Need to swap bytes on little endian systems.
const uint32_t * src = this->orderedRGBA.getValues(0);
uint32_t * dst = (uint32_t*)
PRIVATE(this)->vbo->allocBufferData(num*sizeof(uint32_t),
this->getNodeId());
for (int i = 0; i < num; i++) {
uint32_t tmp = src[i];
dst[i] =
(tmp << 24) |
((tmp & 0xff00) << 8) |
((tmp & 0xff0000) >> 8) |
(tmp >> 24);
}
}
}
}
else if (PRIVATE(this)->vbo) {
PRIVATE(this)->vbo->setBufferData(NULL, 0, 0);
}
SoBase::staticDataUnlock();
if (setvbo) {
SoGLVBOElement::setColorVBO(state, PRIVATE(this)->vbo);
}
}
if (this->isOverride()) {
SoOverrideElement::setDiffuseColorOverride(state, this, TRUE);
}
}
}
// Doc from superclass.
void
SoPackedColor::callback(SoCallbackAction * action)
{
SoPackedColor::doAction(action);
}
/*!
Returns \c TRUE if there is at least one RGBA vector in the set
which is not completely opaque.
*/
SbBool
SoPackedColor::isTransparent(void)
{
if (PRIVATE(this)->checktransparent) {
PRIVATE(this)->checktransparent = FALSE;
PRIVATE(this)->transparent = FALSE;
int n = this->orderedRGBA.getNum();
for (int i = 0; i < n; i++) {
if ((this->orderedRGBA[i] & 0xff) != 0xff) {
PRIVATE(this)->transparent = TRUE;
break;
}
}
}
return PRIVATE(this)->transparent;
}
// Documented in superclass.
void
SoPackedColor::notify(SoNotList *list)
{
// Overridden to check for transparency when orderedRGBA changes.
SoField *f = list->getLastField();
if (f == &this->orderedRGBA) {
PRIVATE(this)->checktransparent = TRUE;
}
inherited::notify(list);
}
#undef PRIVATE
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