5e85cd59ab
the number of occluder that will be used in cull traversal to only the ones that will be effective. Note. Holes in occluders arn't handled in this occluder occlusion test, will implement this later.
84 lines
2.9 KiB
Plaintext
84 lines
2.9 KiB
Plaintext
//C++ header - Open Scene Graph - Copyright (C) 1998-2001 Robert Osfield
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//Distributed under the terms of the GNU Library General Public License (LGPL)
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//as published by the Free Software Foundation.
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#ifndef OSG_COLLECTOCCLUDERSVISITOR
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#define OSG_COLLECTOCCLUDERSVISITOR 1
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#include <osg/NodeVisitor>
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#include <osg/CullStack>
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#include <set>
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namespace osg {
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class SG_EXPORT CollectOccludersVisitor : public osg::NodeVisitor, public osg::CullStack
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{
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public:
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typedef std::set<ShadowVolumeOccluder> ShadowVolumeOccluderSet;
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CollectOccludersVisitor();
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virtual ~CollectOccludersVisitor();
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virtual CollectOccludersVisitor* cloneType() const { return new CollectOccludersVisitor(); }
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virtual void reset();
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virtual void apply(osg::Node&);
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virtual void apply(osg::Transform& node);
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virtual void apply(osg::Projection& node);
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virtual void apply(osg::Switch& node);
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virtual void apply(osg::LOD& node);
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virtual void apply(osg::OccluderNode& node);
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void setMinimumShadowOccluderVolume(float vol) { _minimumShadowOccluderVolume = vol; }
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float getMinimumShadowOccluderVolume() const { return _minimumShadowOccluderVolume; }
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void setCreateDrawablesOnOccludeNodes(bool flag) { _createDrawables=flag; }
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bool getCreateDrawablesOnOccludeNodes() const { return _createDrawables; }
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void setCollectedOcculderList(const ShadowVolumeOccluderSet& svol) { _occluderSet = svol; }
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ShadowVolumeOccluderSet& getCollectedOccluderSet() { return _occluderSet; }
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const ShadowVolumeOccluderSet& getCollectedOccluderSet() const { return _occluderSet; }
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/** remove occluded occluders for the collected occluders list.*/
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void removeOccludedOccluders();
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protected:
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/** prevent unwanted copy construction.*/
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CollectOccludersVisitor(const CollectOccludersVisitor&):osg::NodeVisitor(),osg::CullStack() {}
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/** prevent unwanted copy operator.*/
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CollectOccludersVisitor& operator = (const CollectOccludersVisitor&) { return *this; }
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inline void handle_cull_callbacks_and_traverse(osg::Node& node)
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{
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/*osg::NodeCallback* callback = node.getCullCallback();
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if (callback) (*callback)(&node,this);
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else*/ if (node.getNumChildrenWithOccluderNodes()>0) traverse(node);
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}
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inline void handle_cull_callbacks_and_accept(osg::Node& node,osg::Node* acceptNode)
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{
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/*osg::NodeCallback* callback = node.getCullCallback();
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if (callback) (*callback)(&node,this);
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else*/ if (node.getNumChildrenWithOccluderNodes()>0) acceptNode->accept(*this);
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}
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float _minimumShadowOccluderVolume;
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bool _createDrawables;
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ShadowVolumeOccluderSet _occluderSet;
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};
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}
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#endif
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