static bool readUserCenter( osgDB::InputStream& is, osg::LOD& node )
{
osg::Vec3d center; double radius;
is >> center >> radius;
node.setCenter( center ); node.setRadius( radius );
return true;
}
void StatsVisitor::apply(osg::LOD& node)
{
if (node.getStateSet())
{
apply(*node.getStateSet());
}
++_numInstancedLOD;
_lodSet.insert(&node);
traverse(node);
}
void CVRCullVisitor::apply(osg::LOD& node)
{
bool status = _cullingStatus;
bool firstStatus = _firstCullStatus;
if(isCulled(node))
{
_firstCullStatus = firstStatus;
_cullingStatus = status;
return;
}
// push the culling mode.
pushCurrentMask();
// push the node's state.
StateSet* node_state = node.getStateSet();
if(node_state)
pushStateSet(node_state);
handle_cull_callbacks_and_traverse(node);
// pop the node's state off the render graph stack.
if(node_state)
popStateSet();
// pop the culling mode.
popCurrentMask();
_firstCullStatus = firstStatus;
_cullingStatus = status;
}
void
FltExportVisitor::apply( osg::LOD& lodNode )
{
_firstNode = false;
ScopedStatePushPop guard( this, lodNode.getStateSet() );
// LOD center - same for all children
osg::Vec3d center = lodNode.getCenter();
// Iterate children of the LOD and write a separate LOD record for each,
// with that child's individual switchIn and switchOut properties
for ( size_t i = 0; i < lodNode.getNumChildren(); ++i )
{
osg::Node* lodChild = lodNode.getChild(i);
// Switch-in/switch-out distances may vary per child
double switchInDist = lodNode.getMaxRange(i);
double switchOutDist = lodNode.getMinRange(i);
writeLevelOfDetail( lodNode, center, switchInDist, switchOutDist);
writeMatrix( lodNode.getUserData() );
writeComment( lodNode );
// Traverse each child of the LOD
writePushTraverseWritePop( *lodChild );
}
}
void
CountsVisitor::apply(osg::LOD& node)
{
pushStateSet(node.getStateSet());
_lods++;
osg::ref_ptr<osg::Object> rp = (osg::Object*)&node;
_uLods.insert(rp);
_totalChildren += node.getNumChildren();
apply(node.getStateSet());
if (++_depth > _maxDepth)
_maxDepth = _depth;
traverse((osg::Node&)node);
_depth--;
popStateSet();
}
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;
}
static bool readRangeList( osgDB::InputStream& is, osg::LOD& node )
{
unsigned int size = is.readSize(); is >> is.BEGIN_BRACKET;
for ( unsigned int i=0; i<size; ++i )
{
float min, max;
is >> min >> max;
node.setRange( i, min, max );
}
is >> is.END_BRACKET;
return true;
}
void
FltExportVisitor::writeLevelOfDetail(const osg::LOD &lod,
osg::Vec3d const ¢er,
double switchInDist,
double switchOutDist)
{
uint16 length(80);
IdHelper id(*this, lod.getName());
_records->writeInt16((int16) LOD_OP);
_records->writeInt16(length);
_records->writeID(id);
_records->writeInt32(0); // 'Reserved' field
_records->writeFloat64(switchInDist);
_records->writeFloat64(switchOutDist); // Switch-out distance
_records->writeInt16(0); // Special Effect ID1
_records->writeInt16(0); // Special Effect ID2
_records->writeInt32(0); // Flags
_records->writeFloat64(center.x());
_records->writeFloat64(center.y());
_records->writeFloat64(center.z());
_records->writeFloat64(0); // Transition range
_records->writeFloat64(0); // Significant size
}
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);
}
// _userDefinedCenter, _radius
static bool checkUserCenter( const osg::LOD& node )
{
return (node.getCenterMode()==osg::LOD::USER_DEFINED_CENTER)||(node.getCenterMode()==osg::LOD::UNION_OF_BOUNDING_SPHERE_AND_USER_DEFINED);
}
// _rangeList
static bool checkRangeList( const osg::LOD& node )
{
return node.getNumRanges()>0;
}
static bool writeUserCenter( osgDB::OutputStream& os, const osg::LOD& node )
{
os << osg::Vec3d(node.getCenter()) << (double)node.getRadius() << std::endl;
return true;
}
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 );
}
