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87 lines
2.7 KiB
87 lines
2.7 KiB
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2006 Robert Osfield |
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* |
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* This library is open source and may be redistributed and/or modified under |
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* the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or |
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* (at your option) any later version. The full license is in LICENSE file |
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* included with this distribution, and on the openscenegraph.org website. |
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* |
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* This library is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* OpenSceneGraph Public License for more details. |
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*/ |
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#ifndef OSGSHADOW_SHADOWEDTECHNIQUE |
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#define OSGSHADOW_SHADOWEDTECHNIQUE 1 |
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#include <osg/buffered_value> |
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#include <osg/Camera> |
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#include <osg/Texture2D> |
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#include <osg/TexGenNode> |
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#include <osgUtil/CullVisitor> |
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#include <osgShadow/Export> |
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namespace osgShadow { |
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// forward declare ShadowedScene |
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class ShadowedScene; |
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/** ShadowedScene provides a mechanism for decorating a scene that the needs to have shadows cast upon it.*/ |
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class OSGSHADOW_EXPORT ShadowTechnique : public osg::Object |
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{ |
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public : |
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ShadowTechnique(); |
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ShadowTechnique(const ShadowTechnique& es, const osg::CopyOp& copyop=osg::CopyOp::SHALLOW_COPY); |
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META_Object(osgShadow, ShadowTechnique); |
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ShadowedScene* getShadowedScene() { return _shadowedScene; } |
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/** initialize the ShadowedScene and local cached data structures.*/ |
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virtual void init(); |
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/** run the update traversal of the ShadowedScene and update any local cached data structures.*/ |
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virtual void update(osg::NodeVisitor& nv); |
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/** run the cull traversal of the ShadowedScene and set up the rendering for this ShadowTechnique.*/ |
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virtual void cull(osgUtil::CullVisitor& cv); |
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/** Clean scene graph from any shadow technique specific nodes, state and drawables.*/ |
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virtual void cleanSceneGraph(); |
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virtual void traverse(osg::NodeVisitor& nv); |
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/** Dirty so that cached data structures are updated.*/ |
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virtual void dirty() { _dirty = true; } |
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protected : |
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class OSGSHADOW_EXPORT CameraCullCallback : public osg::NodeCallback |
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{ |
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public: |
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CameraCullCallback(ShadowTechnique* st); |
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virtual void operator()(osg::Node*, osg::NodeVisitor* nv); |
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protected: |
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ShadowTechnique* _shadowTechnique; |
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}; |
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osg::Vec3 computeOrthogonalVector(const osg::Vec3& direction) const; |
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virtual ~ShadowTechnique(); |
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friend class ShadowedScene; |
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ShadowedScene* _shadowedScene; |
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bool _dirty; |
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}; |
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} |
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#endif
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