FGFS-4.1/OpenSceneGraph
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Refactored the internals of OverlayNode

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This commit is contained in:
Robert Osfield
2007-05-16 14:22:10 +00:00
parent 310d6d2fc8
commit 78800829ed
4 changed files with 160 additions and 109 deletions
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38
include/osgSim/OverlayNode
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@@ -18,6 +18,7 @@
#include <osg/Camera>
#include <osg/Texture2D>
#include <osg/TexGenNode>
#include <osg/Geode>
#include <osgUtil/CullVisitor>
@@ -72,10 +73,10 @@ class OSGSIM_EXPORT OverlayNode : public osg::Group
/** Set the clear color to use when rendering the overlay subgraph.*/
void setOverlayClearColor(const osg::Vec4& color);
void setOverlayClearColor(const osg::Vec4& color) { _overlayClearColor = _overlayClearColor; }
/** Get the clear color to use when rendering the overlay subgraph.*/
osg::Vec4 getOverlayClearColor() const;
const osg::Vec4& getOverlayClearColor() const { return _overlayClearColor; }
/** Set the TexEnv mode used to combine the overlay texture with the base color/texture of the OverlayNode's decorate subgraph.*/
void setTexEnvMode(GLenum mode);
@@ -95,12 +96,6 @@ class OSGSIM_EXPORT OverlayNode : public osg::Group
/** Get the texture size hint.*/
unsigned int getOverlayTextureSizeHint() const { return _textureSizeHint; }
/** Get the camera used to implement the render to texture of the overlay subgraph.*/
osg::Camera* getCamera() { return _camera.get(); }
/** Get the const camera used to implement the render to texture of the overlay subgraph.*/
const osg::Camera* getCamera() const { return _camera.get(); }
/** Set whether to use a mutex to ensure ref() and unref() are thread safe.*/
virtual void setThreadSafeRefUnref(bool threadSafe);
@@ -135,35 +130,34 @@ class OSGSIM_EXPORT OverlayNode : public osg::Group
OverlayTechnique _overlayTechnique;
osg::ref_ptr<osg::Camera> _camera;
// overlay subgraph is render to a texture
osg::ref_ptr<osg::Node> _overlaySubgraph;
// texgen node to generate the tex coordinates for us
osg::ref_ptr<osg::TexGenNode> _texgenNode;
// state set to decoate the main subgraph.
osg::ref_ptr<osg::StateSet> _mainSubgraphStateSet;
// texture to render to, and to read from.
GLenum _texEnvMode;
unsigned int _textureUnit;
unsigned int _textureSizeHint;
osg::ref_ptr<osg::Texture2D> _texture;
osg::Vec4 _overlayClearColor;
bool _continuousUpdate;
bool _updateCamera;
osg::Polytope _textureFrustum;
private:
struct OverlayData
{
osg::ref_ptr<osg::Camera> _camera;
osg::ref_ptr<osg::StateSet> _overlayStateSet;
osg::ref_ptr<osg::StateSet> _mainSubgraphStateSet;
osg::ref_ptr<osg::TexGen> _texgen;
void setThreadSafeRefUnref(bool threadSafe);
void resizeGLObjectBuffers(unsigned int maxSize);
void releaseGLObjects(osg::State* state= 0) const;
osg::ref_ptr<osg::Camera> _camera;
osg::ref_ptr<osg::StateSet> _overlayStateSet;
osg::ref_ptr<osg::StateSet> _mainSubgraphStateSet;
osg::ref_ptr<osg::TexGenNode> _texgenNode;
osg::ref_ptr<osg::Texture2D> _texture;
osg::Polytope _textureFrustum;
osg::ref_ptr<osg::Geode> _geode;
};
typedef std::map<osgUtil::CullVisitor*, OverlayData> OverlayDataMap;