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/*!
  \class SoPackedColorV20 SoPackedColorV20.h
  \brief The SoPackedColorV20 class is a node is for Inventor V2.0 support only.
  \ingroup nodes

  \sa SoPackedColor
*/

#include "upgraders/SoPackedColorV20.h"

#include <Inventor/nodes/SoPackedColor.h>

#include "nodes/SoSubNodeP.h"

/*!
  \var SoMFUInt32 SoPackedColorV20::rgba

  Set of packed 32-bit RGBA vectors.

  The most significant 8 bits specifies the transparency value, where
  0x00 means completely transparent, and 0xff completely opaque.

  The least significant 24 bits specifies 8 bits each for the blue,
  green and red components.
*/

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

SO_NODE_SOURCE(SoPackedColorV20);

/*!
  Constructor.
*/
SoPackedColorV20::SoPackedColorV20()
{
  SO_NODE_INTERNAL_CONSTRUCTOR(SoPackedColorV20);

  SO_NODE_ADD_FIELD(rgba, (0xffcccccc));
}

/*!
  Destructor.
*/
SoPackedColorV20::~SoPackedColorV20()
{
}

// Doc from superclass.
void
SoPackedColorV20::initClass(void)
{
  SO_NODE_INTERNAL_INIT_CLASS(SoPackedColorV20, SoNode::INVENTOR_2_0|SoNode::INVENTOR_1);
}

SoPackedColor * 
SoPackedColorV20::createUpgrade(void) const
{
  SoPackedColor * pp = new SoPackedColor;
  pp->ref();

  const int n = this->rgba.getNum();
  const uint32_t * src = this->rgba.getValues(0);
  pp->orderedRGBA.setNum(n);
  uint32_t * dst = pp->orderedRGBA.startEditing();
  for (int i = 0; i < n; i++) {
    uint32_t val = src[i];
    dst[i] = (val<<24)|((val<<8)&0xff0000)|((val>>8)&0xff00)|(val>>24);
  }
  pp->orderedRGBA.finishEditing();

  pp->unrefNoDelete();
  return pp;
}
