Source

Coin / src / nodes / SoBaseColor.cpp

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/**************************************************************************\
 * Copyright (c) Kongsberg Oil & Gas Technologies AS
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 * 
 * Redistributions of source code must retain the above copyright notice,
 * this list of conditions and the following disclaimer.
 * 
 * Redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in the
 * documentation and/or other materials provided with the distribution.
 * 
 * Neither the name of the copyright holder nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
\**************************************************************************/

/*!
  \class SoBaseColor SoBaseColor.h Inventor/nodes/SoBaseColor.h
  \brief The SoBaseColor class provides a node type for convenient setting of the base material color.
  \ingroup nodes

  If you want to just set the diffuse color of the following geometry,
  you can use this node for simplicity.

  <b>FILE FORMAT/DEFAULTS:</b>
  \code
    BaseColor {
        rgb 0.8 0.8 0.8
    }
  \endcode

  \sa SoMaterial
*/

#include <Inventor/nodes/SoBaseColor.h>

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif // HAVE_CONFIG_H

#include <Inventor/actions/SoCallbackAction.h>
#include <Inventor/actions/SoGLRenderAction.h>
#include <Inventor/actions/SoPickAction.h>
#include <Inventor/elements/SoGLLazyElement.h>
#include <Inventor/elements/SoDiffuseColorElement.h>
#include <Inventor/elements/SoOverrideElement.h>
#include <Inventor/elements/SoGLVBOElement.h>
#ifdef COIN_THREADSAFE
#include <Inventor/threads/SbStorage.h>
#endif // COIN_THREADSAFE

#include "rendering/SoVBO.h"
#include "nodes/SoSubNodeP.h"

/*!
  \var SoMFColor SoBaseColor::rgb

  Color values. Default value of field is to have a single grey color.
*/

#ifndef DOXYGEN_SKIP_THIS

class SoBaseColorP {
 public:
  SoBaseColorP() : 
#ifdef COIN_THREADSAFE
    colorpacker_storage(sizeof(void*), alloc_colorpacker, free_colorpacker),
#endif // COIN_THREADSAFE
    vbo(NULL) { }
  ~SoBaseColorP() { delete this->vbo; }

#ifdef COIN_THREADSAFE
  SbStorage colorpacker_storage;
#else // COIN_THREADSAFE
  SoColorPacker single_colorpacker;
#endif // COIN_THREADSAFE
  
  SoColorPacker * getColorPacker(void) {
#ifdef COIN_THREADSAFE
    SoColorPacker ** cptr = (SoColorPacker**) this->colorpacker_storage.get();
    return * cptr;
#else // COIN_THREADSAFE
    return &this->single_colorpacker;
#endif // COIN_THREADSAFE
  }
  SoVBO * vbo;
#ifdef COIN_THREADSAFE
private:
  static void alloc_colorpacker(void * data) {
    SoColorPacker ** cptr = (SoColorPacker**) data;
    *cptr = new SoColorPacker;
  }
  static void free_colorpacker(void * data) {
    SoColorPacker ** cptr = (SoColorPacker**) data;
    delete *cptr;
  }
#endif // COIN_THREADSAFE
};

#endif // DOXYGEN_SKIP_THIS

#define PRIVATE(obj) ((obj)->pimpl)

// *************************************************************************

SO_NODE_SOURCE(SoBaseColor);

/*!
  Constructor.
*/
SoBaseColor::SoBaseColor()
{
  PRIVATE(this) = new SoBaseColorP;
  SO_NODE_INTERNAL_CONSTRUCTOR(SoBaseColor);

  SO_NODE_ADD_FIELD(rgb, (SbColor(0.8f, 0.8f, 0.8f)));
}

/*!
  Destructor.
*/
SoBaseColor::~SoBaseColor()
{
  delete PRIVATE(this);
}

// Doc from superclass.
void
SoBaseColor::initClass(void)
{
  SO_NODE_INTERNAL_INIT_CLASS(SoBaseColor, SO_FROM_INVENTOR_1);

  SO_ENABLE(SoGLRenderAction, SoGLLazyElement);
  SO_ENABLE(SoCallbackAction, SoLazyElement);

  SO_ENABLE(SoCallbackAction, SoDiffuseColorElement);
  SO_ENABLE(SoGLRenderAction, SoDiffuseColorElement);
}

// Doc from superclass.
void
SoBaseColor::GLRender(SoGLRenderAction * action)
{
  SoBaseColor::doAction(action);
}

// Doc from superclass.
void
SoBaseColor::doAction(SoAction * action)
{
  SoState * state = action->getState();
  
  if (!this->rgb.isIgnored() && this->rgb.getNum() &&
      !SoOverrideElement::getDiffuseColorOverride(state)) {
    const int num = this->rgb.getNum();
    SoLazyElement::setDiffuse(state, this, num,
                              this->rgb.getValues(0), PRIVATE(this)->getColorPacker());
    
    if (state->isElementEnabled(SoGLVBOElement::getClassStackIndex())) {
      SbBool setvbo = FALSE;
      SoBase::staticDataLock();
      if (SoGLVBOElement::shouldCreateVBO(state, num)) {
        setvbo = TRUE;
        if (PRIVATE(this)->vbo == NULL) {
          PRIVATE(this)->vbo = new SoVBO(GL_ARRAY_BUFFER, GL_STATIC_DRAW);
        }
      }
      else if (PRIVATE(this)->vbo) {
        PRIVATE(this)->vbo->setBufferData(NULL, 0, 0);
      }
      // don't fill in any data in the VBO. Data will be filled in
      // using the ColorPacker right before the VBO is used
      SoBase::staticDataUnlock();
      if (setvbo) {
        SoGLVBOElement::setColorVBO(state, PRIVATE(this)->vbo);
      }
    }
    if (this->isOverride()) {
      SoOverrideElement::setDiffuseColorOverride(state, this, TRUE);
    }
  }
}

// Doc from superclass.
void
SoBaseColor::callback(SoCallbackAction * action)
{
  SoBaseColor::doAction(action);
}

#undef PRIVATE