Beispiel #1
0
static bool writeRangeList( osgDB::OutputStream& os, const osg::LOD& node )
{
    const osg::LOD::RangeList& ranges = node.getRangeList();
    os.writeSize(ranges.size()); os << os.BEGIN_BRACKET << std::endl;
    for ( osg::LOD::RangeList::const_iterator itr=ranges.begin();
          itr!=ranges.end(); ++itr )
    {
        os << itr->first << itr->second << std::endl;
    }
    os << os.END_BRACKET << std::endl;
    return true;
}
		void apply(osg::LOD& lod)
		{
			// find the highest LOD:
			int   minIndex = 0;
			float minRange = FLT_MAX;
			for(unsigned i=0; i<lod.getNumRanges(); ++i)
			{
				if ( lod.getRangeList()[i].first < minRange )
				{
					minRange = lod.getRangeList()[i].first;
					minIndex = i;
				}
			}

			//remove all but the highest:
			osg::ref_ptr<osg::Node> highestLOD = lod.getChild( minIndex );
			lod.removeChildren( 0, lod.getNumChildren() );

			//add it back with a full range.
			lod.addChild( highestLOD.get(), 0.0f, FLT_MAX );

			traverse(lod);
		}
Beispiel #3
0
void daeWriter::apply( osg::LOD &node )
{
    debugPrint( node );
    updateCurrentDaeNode();
    lastDepth = _nodePath.size();
    currentNode = daeSafeCast< domNode >(currentNode->add( COLLADA_ELEMENT_NODE ) );
    currentNode->setId(getNodeName(node,"LOD").c_str());

    if (writeExtras)
    {
        // Store LOD data as extra "LOD" data in the "OpenSceneGraph" technique
        // Adds the following to a node

        //<extra type="LOD">
        //    <technique profile="OpenSceneGraph">
        //        <Center>1 2 3</Center> (optional )
        //        <Radius>-1</Radius> (required if Center is available)
        //        <RangeMode>0</RangeMode>
        //        <RangeList>
        //            <MinMax>0 300</MinMax>
        //            <MinMax>300 600</MinMax>
        //        </RangeList>
        //    </technique>
        //</extra>

        domExtra *extra = daeSafeCast<domExtra>(currentNode->add( COLLADA_ELEMENT_EXTRA ));
        extra->setType("LOD");
        domTechnique *teq = daeSafeCast<domTechnique>(extra->add( COLLADA_ELEMENT_TECHNIQUE ) );
        teq->setProfile( "OpenSceneGraph" );

        if (node.getCenterMode()==osg::LOD::USER_DEFINED_CENTER)
        {
            domAny *center = (domAny*)teq->add("Center");
            center->setValue(toString(node.getCenter()).c_str());

            domAny *radius = (domAny*)teq->add("Radius");
            radius->setValue(toString<osg::LOD::value_type>(node.getRadius()).c_str());
        }

        domAny *rangeMode = (domAny*)teq->add("RangeMode");
        rangeMode->setValue(toString<osg::LOD::RangeMode>(node.getRangeMode()).c_str());

        domAny *valueLists = (domAny*)teq->add("RangeList");

        unsigned int pos = 0;
        const osg::LOD::RangeList& rangelist = node.getRangeList();
        for(osg::LOD::RangeList::const_iterator sitr=rangelist.begin();
            sitr!=rangelist.end();
            ++sitr,++pos)
        {
            domAny *valueList = (domAny*)valueLists->add("MinMax");
            std::stringstream fw;
            fw << sitr->first << " " << sitr->second;
            valueList->setValue(fw.str().c_str());
        }
    }
        
    writeNodeExtra(node);

    // Process all children
    traverse( node );
}