ecmascript:

function initialize()
{
	//colorPerVertex ignored in IndexedQuadSet, and always treated as "true"
	RenderedIQS.colorPerVertex = true;

	// index is an array of quad indices. The ordering of
	// the vertices is ccw (counter-clockwise).

	// ensure legal index values
	for (ii=0; ii <= index.length-1; ii++)
	{
	  if (index[ii] < -1)
	  {
		alwaysPrint ('error, index[' + ii + ']=' + index[ii] + ' is illegal value');
		return;
	  }
	}
	tracePrint ('index.length=' + index.length);
	tracePrint ('index=' + index);

	if (index.length < 4)
	{
		alwaysPrint ('warning, index.length=' + index.length + ' insufficient to construct a quad, IQS ignored');
		return;
	}

	coordIndexNew = new MFInt32 ();

	// ii walks through index array,
	// goal is to initialize coordIndexNew list to match quads
	for (ii=0; ii <= index.length-1; ii+=4)
	{
		if ((index[ii]   == index[ii+1]) || (index[ii]   == index[ii+2]) || (index[ii] == index[ii+3]) ||
		    (index[ii+1] == index[ii+2]) || (index[ii+1] == index[ii+3]) ||
		    (index[ii+2] == index[ii+3]))
		{
			alwaysPrint ('index=' + index);
			alwaysPrint ('error, pair of equal indices in quad');
			return;
		}

		if (index[ii] >= 0)
		{
			// add another quad from latest 4 points of fan set to IQS
			// order is ccw, i.e. in correct halfplane direction
			// note: there is an implicit "malloc" here for the'length' element of the array
			coordIndexNew [coordIndexNew.length] = index[ii];
			coordIndexNew [coordIndexNew.length] = index[ii+1];
			coordIndexNew [coordIndexNew.length] = index[ii+2];
			coordIndexNew [coordIndexNew.length] = index[ii+3];
			coordIndexNew [coordIndexNew.length] = -1;
		}

		if (index.length % 4 != 0) {
			alwaysPrint ('error, index field does not contain a multiple of four coordinate values.');
			alwaysPrint ('The remaining vertices shall be ignored');
			return;
		}

	  // incremental trace of array being built
	  tracePrint ('coordIndexNew=' + coordIndexNew);
	}
	renderedIQS.set_coordIndex = coordIndexNew;
	tracePrint ('renderedIQS.coordIndex=' + renderedIQS.coordIndex);
	// match colorIndex if any Color node exists
//	if (nodesHolder.color)
//	{
//	  if (nodesHolder.color.color.length > 0)
//	  {
		//  Could implement color count check here
//	  }
//	}

	// no need to set colorIndex since indexedFaceSet semantics handles this
}
function set_index (value, timestamp)
{
	index = value;
	initialize ();
}
function tracePrint(outputString)
{
    if (localTraceEnabled)
	  Browser.print ('[IndexedQuadSet]' + outputString);
}
function alwaysPrint(outputString)
{
	Browser.print ('[IndexedQuadSet]' + outputString);
}

          

            ecmascript:

function initialize()
{
	//colorPerVertex ignored in QuadSet, and always treated as "true"
	RenderedQS.colorPerVertex = true;

	// calculate index value from QuadSet coord values
	if (renderedQS.coord)
	{
		numberOfCoordinatePoints = renderedQS.coord.point.length;
	}
	else
	{
		tracePrint ('no Coordinate node found');
		return;
	}
	if (numberOfCoordinatePoints < 4)
	{
		alwaysPrint ('warning, numberOfCoordinatePoints=' + numberOfCoordinatePoints + ' insufficient to construct a quad, QuadSet ignored');
		return;
	}

	coordIndexNew = new MFInt32 ();

	// ii walks through index array,
	// goal is to initialize coordIndexNew list to match quads
	for (ii=0; ii <= numberOfCoordinatePoints-1; ii+=4)
	{
		// check if at least 4 vertices remaining to build a quad
		if ((numberOfCoordinatePoints - ii) < 4)
		{
			alwaysPrint ('error, index field does not contain a multiple' +
' of four coordinate values.');
			alwaysPrint ('The remaining vertices shall be ignored');
			return;
		}

		if ((index[ii]   == index[ii+1]) || (index[ii]   == index[ii+2]) || (index[ii] == index[ii+3]) ||
		    (index[ii+1] == index[ii+2]) || (index[ii+1] == index[ii+3]) ||
		    (index[ii+2] == index[ii+3]))
		{
			alwaysPrint ('index=' + index);
			alwaysPrint ('error, pair of equal indices in quad');
			return;
		}

		if (index[ii] >= 0)
		{
			// add another quad from latest 4 points of fan set to QS
			// order is ccw, i.e. in correct halfplane direction
			// note: there is an implicit "malloc" here for the'length' element of the array
			coordIndexNew [coordIndexNew.length] = index[ii];
			coordIndexNew [coordIndexNew.length] = index[ii+1];
			coordIndexNew [coordIndexNew.length] = index[ii+2];
			coordIndexNew [coordIndexNew.length] = index[ii+3];
			coordIndexNew [coordIndexNew.length] = -1;
		}

	  // incremental trace of array being built
	  tracePrint ('coordIndexNew=' + coordIndexNew);
	}
	renderedQS.set_coordIndex = coordIndexNew;
	tracePrint ('renderedQS.coordIndex=' + renderedQS.coordIndex);
	// match colorIndex if any Color node exists
//	if (nodesHolder.color)
//	{
//	  if (nodesHolder.color.color.length > 0)
//	  {
		//  Could implement color count check here
//	  }
//	}

	// no need to set colorIndex since indexedFaceSet semantics handles this
}
function set_index (value, timestamp)
{
	index = value;
	initialize ();
}
function tracePrint(outputString)
{
    if (localTraceEnabled)
	  Browser.print ('[IndexedQuadSet]' + outputString);
}
function alwaysPrint(outputString)
{
	Browser.print ('[IndexedQuadSet]' + outputString);
}
          
          

          
ecmascript:
// no script code, this node is simply a container

        

          
ecmascript:
// no script code, this node is simply a container