84 lines
2.9 KiB
Plaintext
84 lines
2.9 KiB
Plaintext
//C++ header - Open Scene Graph - Copyright (C) 1998-2002 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 osgNew 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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