void
RemoveOcclusionQueryVisitor::apply( osg::OcclusionQueryNode& oqn )
{
if (oqn.getNumParents() == 0)
{
// Even if this is an OQN, can't delete it because it's the root.
traverse( oqn );
return;
}
osg::ref_ptr<osg::OcclusionQueryNode> oqnPtr = &oqn;
unsigned int np = oqn.getNumParents();
while (np--)
{
osg::Group* parent = dynamic_cast<osg::Group*>( oqn.getParent( np ) );
if (parent != NULL)
{
// Remove OQN from parent.
parent->removeChild( oqnPtr.get() );
// Add OQN's children to parent.
unsigned int nc = oqn.getNumChildren();
while (nc--)
parent->addChild( oqn.getChild( nc ) );
}
}
}
void CullVisitor::apply(osg::OcclusionQueryNode& node)
{
if (isCulled(node)) return;
// push the culling mode.
pushCurrentMask();
// push the node's state.
StateSet* node_state = node.getStateSet();
if (node_state) pushStateSet(node_state);
osg::Camera* camera = getCurrentCamera();
// If previous query indicates visible, then traverse as usual.
if (node.getPassed( camera, *this ))
handle_cull_callbacks_and_traverse(node);
// Traverse the query subtree if OcclusionQueryNode needs to issue another query.
node.traverseQuery( camera, *this );
// Traverse the debug bounding geometry, if enabled.
node.traverseDebug( *this );
// pop the node's state off the render graph stack.
if (node_state) popStateSet();
// pop the culling mode.
popCurrentMask();
}
void
DebugDisplayVisitor::apply( osg::OcclusionQueryNode& oqn )
{
oqn.setDebugDisplay( _debug );
traverse( oqn );
}
void
EnableQueryVisitor::apply( osg::OcclusionQueryNode& oqn )
{
oqn.setQueriesEnabled( _enabled );
traverse( oqn );
}
void
QueryFrameCountVisitor::apply( osg::OcclusionQueryNode& oqn )
{
oqn.setQueryFrameCount( _count );
traverse( oqn );
}
void
VisibilityThresholdVisitor::apply( osg::OcclusionQueryNode& oqn )
{
oqn.setVisibilityThreshold( _visThreshold );
traverse( oqn );
}
void
StatisticsVisitor::apply( osg::OcclusionQueryNode& oqn )
{
_numOQNs++;
if (oqn.getPassed())
_numPassed++;
traverse( oqn );
}
void ScreenMVCullVisitor::apply(osg::OcclusionQueryNode& 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);
osg::Camera* camera = getCurrentCamera();
// If previous query indicates visible, then traverse as usual.
#if (OPENSCENEGRAPH_MAJOR_VERSION == 2) && (OPENSCENEGRAPH_MINOR_VERSION == 9) && (OPENSCENEGRAPH_PATCH_VERSION <= 7)
if (node.getPassed( camera, getDistanceToEyePoint( node.getBound()._center, false ) ))
#else
if(node.getPassed(camera,*this))
#endif
handle_cull_callbacks_and_traverse(node);
// Traverse the query subtree if OcclusionQueryNode needs to issue another query.
node.traverseQuery(camera,*this);
// Traverse the debug bounding geometry, if enabled.
node.traverseDebug(*this);
// pop the node's state off the render graph stack.
if(node_state)
popStateSet();
// pop the culling mode.
popCurrentMask();
_firstCullStatus = firstStatus;
_cullingStatus = status;
}