virtual void apply(osg::PagedLOD& node)
{
//The PagedLOD node will contain two filenames, the first is empty and is the actual geometry of the
//tile and the second is the filename of the next tile.
if (node.getNumFileNames() > 1)
{
//Get the child filename
const std::string &filename = node.getFileName(1);
if (osgEarth::Registry::instance()->isBlacklisted(filename))
{
//If the tile is blacklisted, we set the actual geometry, child 0, to always display
//and the second child to never display
node.setRange(0, 0, FLT_MAX);
node.setRange(1, FLT_MAX, FLT_MAX);
}
else
{
//If the child is not blacklisted, it is possible that it could have been blacklisted previously so reset the
//ranges of both the first and second children. This gives the second child another
//chance to be traversed in case a layer was added that might have data.
osg::ref_ptr< MapNode::TileRangeData > ranges = static_cast< MapNode::TileRangeData* >(node.getUserData());
if (ranges)
{
node.setRange(0, ranges->_minRange, ranges->_maxRange);
node.setRange(1, 0, ranges->_minRange);
}
}
}
traverse(node);
}
void
ShaderGenerator::apply(osg::PagedLOD& node)
{
if ( !_active )
return;
bool ignore;
if ( node.getUserValue(SHADERGEN_HINT_IGNORE, ignore) && ignore )
return;
for( unsigned i=0; i<node.getNumFileNames(); ++i )
{
static Threading::Mutex s_mutex;
s_mutex.lock();
const std::string& filename = node.getFileName( i );
if (!filename.empty() &&
osgDB::getLowerCaseFileExtension(filename).compare(SHADERGEN_PL_EXTENSION) != 0 )
{
node.setFileName( i, Stringify() << filename << "." << SHADERGEN_PL_EXTENSION );
}
s_mutex.unlock();
}
apply( static_cast<osg::LOD&>(node) );
}
void PosterVisitor::apply(osg::PagedLOD &node)
{
if (!hasCullCallback(node.getCullCallback(), g_pagedCullingCallback.get()))
{
for (unsigned int i = 0; i < node.getNumFileNames(); ++i)
{
if (node.getFileName(i).empty())
continue;
PagedNodeNameSet::iterator itr = _pagedNodeNames.find(node.getFileName(i));
if (itr != _pagedNodeNames.end())
{
node.addCullCallback(g_pagedCullingCallback.get());
_appliedCount++;
}
break;
}
}
else if (!_addingCallbacks)
{
node.removeCullCallback(g_pagedCullingCallback.get());
if (_appliedCount > 0)
_appliedCount--;
}
traverse(node);
}
void apply(osg::PagedLOD& plod)
{
if (s_ExitApplication) return;
++_currentLevel;
initBound();
// first compute the bounds of this subgraph
for(unsigned int i=0; i<plod.getNumFileNames(); ++i)
{
if (plod.getFileName(i).empty())
{
traverse(plod);
}
}
if (intersects())
{
for(unsigned int i=0; i<plod.getNumFileNames(); ++i)
{
osg::notify(osg::INFO)<<" filename["<<i<<"] "<<plod.getFileName(i)<<std::endl;
if (!plod.getFileName(i).empty())
{
std::string filename;
if (!plod.getDatabasePath().empty())
{
filename = plod.getDatabasePath() + plod.getFileName(i);
}
else
{
filename = plod.getFileName(i);
}
osg::ref_ptr<osg::Node> node = readNodeFileAndWriteToCache(filename);
if (!s_ExitApplication && node.valid()) node->accept(*this);
}
}
}
--_currentLevel;
}
void
ShaderGenerator::apply(osg::PagedLOD& node)
{
if ( !_active ) return;
for( unsigned i=0; i<node.getNumFileNames(); ++i )
{
const std::string& filename = node.getFileName( i );
if (!filename.empty() &&
osgDB::getLowerCaseFileExtension(filename).compare(SHADERGEN_PL_EXTENSION) != 0 )
{
node.setFileName( i, Stringify() << filename << "." << SHADERGEN_PL_EXTENSION );
}
}
apply( static_cast<osg::LOD&>(node) );
}
void IntersectionVisitor::apply(osg::PagedLOD& plod)
{
if (!enter(plod)) return;
if (plod.getNumFileNames()>0)
{
#if 1
// Identify the range value for the highest res child
float targetRangeValue;
if( plod.getRangeMode() == osg::LOD::DISTANCE_FROM_EYE_POINT )
targetRangeValue = 1e6; // Init high to find min value
else
targetRangeValue = 0; // Init low to find max value
const osg::LOD::RangeList rl = plod.getRangeList();
osg::LOD::RangeList::const_iterator rit;
for( rit = rl.begin();
rit != rl.end();
rit++ )
{
if( plod.getRangeMode() == osg::LOD::DISTANCE_FROM_EYE_POINT )
{
if( rit->first < targetRangeValue )
targetRangeValue = rit->first;
}
else
{
if( rit->first > targetRangeValue )
targetRangeValue = rit->first;
}
}
// Perform an intersection test only on children that display
// at the maximum resolution.
unsigned int childIndex;
for( rit = rl.begin(), childIndex = 0;
rit != rl.end();
rit++, childIndex++ )
{
if( rit->first != targetRangeValue )
// This is not one of the highest res children
continue;
osg::ref_ptr<osg::Node> child( NULL );
if( plod.getNumChildren() > childIndex )
child = plod.getChild( childIndex );
if( (!child.valid()) && (_readCallback.valid()) )
{
// Child is NULL; attempt to load it, if we have a readCallback...
unsigned int validIndex( childIndex );
if (plod.getNumFileNames() <= childIndex)
validIndex = plod.getNumFileNames()-1;
child = _readCallback->readNodeFile( plod.getDatabasePath() + plod.getFileName( validIndex ) );
}
if ( !child.valid() && plod.getNumChildren()>0)
{
// Child is still NULL, so just use the one at the end of the list.
child = plod.getChild( plod.getNumChildren()-1 );
}
if (child.valid())
{
child->accept(*this);
}
}
#else
// older code than above block, that assumes that the PagedLOD is ordered correctly
// i.e. low res children first, no duplicate ranges.
osg::ref_ptr<osg::Node> highestResChild;
if (plod.getNumFileNames() != plod.getNumChildren() && _readCallback.valid())
{
highestResChild = _readCallback->readNodeFile( plod.getDatabasePath() + plod.getFileName(plod.getNumFileNames()-1) );
}
if ( !highestResChild.valid() && plod.getNumChildren()>0)
{
highestResChild = plod.getChild( plod.getNumChildren()-1 );
}
if (highestResChild.valid())
{
highestResChild->accept(*this);
}
#endif
}
leave();
}