65 lines
2.0 KiB
Plaintext
65 lines
2.0 KiB
Plaintext
#ifndef OSG_TRANSPARENCY
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#define OSG_TRANSPARENCY 1
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#include <osg/StateAttribute>
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#include <osg/StateSet>
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namespace osg {
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/** Transparancy - encapsulates the OpenGL transparancy state.*/
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class SG_EXPORT Transparency : public StateAttribute
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{
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public :
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Transparency();
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virtual Object* clone() const { return new Transparency(); }
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virtual bool isSameKindAs(const Object* obj) const { return dynamic_cast<const Transparency*>(obj)!=0L; }
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virtual const char* className() const { return "Transparency"; }
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virtual const Type getType() const { return TRANSPARENCY; }
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virtual void setStateSetModes(StateSet& ds,const GLModeValue value) const
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{
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ds.setMode(GL_BLEND,value);
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}
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enum TransparencyMode {
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DST_ALPHA = GL_DST_ALPHA,
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DST_COLOR = GL_DST_COLOR,
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ONE = GL_ONE,
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ONE_MINUS_DST_ALPHA = GL_ONE_MINUS_DST_ALPHA,
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ONE_MINUS_DST_COLOR = GL_ONE_MINUS_DST_COLOR,
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ONE_MINUS_SRC_ALPHA = GL_ONE_MINUS_SRC_ALPHA,
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ONE_MINUS_SRC_COLOR = GL_ONE_MINUS_SRC_COLOR,
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SRC_ALPHA = GL_SRC_ALPHA,
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SRC_ALPHA_SATURATE = GL_SRC_ALPHA_SATURATE,
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SRC_COLOR = GL_SRC_COLOR,
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ZERO = GL_ZERO
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};
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inline void setFunction( const int source, const int destination )
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{
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_source_factor = source;
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_destination_factor = destination;
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}
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void setSource(const int source) { _source_factor = source; }
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inline const int getSource() const { return _source_factor; }
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void setDestination(const int destination) { _destination_factor = destination; }
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inline const int getDestination() const { return _destination_factor; }
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virtual void apply(State& state) const;
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protected :
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virtual ~Transparency();
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int _source_factor;
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int _destination_factor;
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};
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};
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#endif
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