262 lines
12 KiB
Plaintext
262 lines
12 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_STATESET
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#define OSG_STATESET 1
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#include <osg/Object>
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#include <osg/StateAttribute>
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#include <osg/ref_ptr>
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#include <map>
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#include <vector>
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#include <string>
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namespace osg {
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/**
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Encapsulates OpenGL state modes and attributes.
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Used to specific textures etc of osg::Drawable's which hold references
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to a single osg::StateSet. StateSet can be shared between Drawable's
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and is recommend if possible as it minimize expensive state changes
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in the graphics pipeline.
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*/
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class SG_EXPORT StateSet : public Object
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{
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public :
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StateSet();
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StateSet(const StateSet&,const CopyOp& copyop=CopyOp::SHALLOW_COPY);
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virtual Object* cloneType() const { return new StateSet(); }
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virtual Object* clone(const CopyOp& copyop) const { return new StateSet(*this,copyop); }
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virtual bool isSameKindAs(const Object* obj) const { return dynamic_cast<const StateSet*>(obj)!=NULL; }
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virtual const char* libraryName() const { return "osg"; }
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virtual const char* className() const { return "StateSet"; }
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/** return -1 if *this < *rhs, 0 if *this==*rhs, 1 if *this>*rhs.*/
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int compare(const StateSet& rhs,bool compareAttributeContents=false) const;
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bool operator < (const StateSet& rhs) const { return compare(rhs)<0; }
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bool operator == (const StateSet& rhs) const { return compare(rhs)==0; }
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bool operator != (const StateSet& rhs) const { return compare(rhs)!=0; }
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/** set all the modes to on or off so that it defines a
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complete state, typically used for a default global state.*/
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void setGlobalDefaults();
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/** set all the modes to inherit, typically used to signify
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nodes which inherit all of their modes for the global state.*/
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void setAllToInherit();
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/** merge this stateset with stateset rhs, this overrides
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* the rhs if OVERRIDE is specified, otherwise rhs takes precedence.*/
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void merge(const StateSet& rhs);
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/** a container to map GLModes to their respective GLModeValues.*/
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typedef std::map<StateAttribute::GLMode,StateAttribute::GLModeValue> ModeList;
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/** set this StateSet to contain specified GLMode and value.*/
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void setMode(StateAttribute::GLMode mode, StateAttribute::GLModeValue value);
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/** set this StateSet to inherit specified GLMode type from parents.
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* has the effect of deleting any GlMode of specified type from StateSet.*/
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void setModeToInherit(StateAttribute::GLMode mode);
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/** get specified GLModeValue for specified GLMode.
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* returns INHERIT if no GLModeValue is contained within StateSet.*/
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StateAttribute::GLModeValue getMode(StateAttribute::GLMode mode) const;
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/** return the list of all GLModes contained in this StateSet.*/
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inline ModeList& getModeList() { return _modeList; }
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/** return the const list of all GLModes contained in this const StateSet.*/
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inline const ModeList& getModeList() const { return _modeList; }
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/** simple pairing between an attribute and its override flag.*/
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typedef std::pair<ref_ptr<StateAttribute>,StateAttribute::OverrideValue> RefAttributePair;
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/** a container to map StateAttribyte::Types to their respective RefAttributePair.*/
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typedef std::map<StateAttribute::Type,RefAttributePair> AttributeList;
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/** set this StateSet to contain specified attribute and override flag.*/
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void setAttribute(StateAttribute *attribute, StateAttribute::OverrideValue value=StateAttribute::OFF);
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/** set this StateSet to contain specified attribute and set the associated GLMode's to specified value.*/
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void setAttributeAndModes(StateAttribute *attribute, StateAttribute::GLModeValue value=StateAttribute::ON);
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/** set this StateSet to inherit specified attribute type from parents.
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* has the effect of deleting any state attributes of specified type from StateSet.*/
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void setAttributeToInherit(StateAttribute::Type type);
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/** get specified StateAttribute for specified type.
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* returns NULL if no type is contained within StateSet.*/
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StateAttribute* getAttribute(StateAttribute::Type type);
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/** get specified const StateAttribute for specified type.
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* returns NULL if no type is contained within const StateSet.*/
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const StateAttribute* getAttribute(StateAttribute::Type type) const;
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/** get specified RefAttributePair for specified type.
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* returns NULL if no type is contained within StateSet.*/
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const RefAttributePair* getAttributePair(StateAttribute::Type type) const;
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/** return the list of all StateAttributes contained in this StateSet.*/
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inline AttributeList& getAttributeList() { return _attributeList; }
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/** return the const list of all StateAttributes contained in this const StateSet.*/
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inline const AttributeList& getAttributeList() const { return _attributeList; }
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typedef std::vector<ModeList> TextureModeList;
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/** set this StateSet to contain specified GLMode and value.*/
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void setTextureMode(unsigned int unit,StateAttribute::GLMode mode, StateAttribute::GLModeValue value);
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/** set this StateSet to inherit specified GLMode type from parents.
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* has the effect of deleting any GlMode of specified type from StateSet.*/
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void setTextureModeToInherit(unsigned int unit,StateAttribute::GLMode mode);
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/** get specified GLModeValue for specified GLMode.
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* returns INHERIT if no GLModeValue is contained within StateSet.*/
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StateAttribute::GLModeValue getTextureMode(unsigned int unit,StateAttribute::GLMode mode) const;
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/** return the list of all Texture related GLModes contained in this StateSet.*/
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inline TextureModeList& getTextureModeList() { return _textureModeList; }
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/** return the const list of all Texture related GLModes contained in this const StateSet.*/
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inline const TextureModeList& getTextureModeList() const { return _textureModeList; }
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typedef std::vector<AttributeList> TextureAttributeList;
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/** set this StateSet to contain specified attribute and override flag.*/
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void setTextureAttribute(unsigned int unit,StateAttribute *attribute, StateAttribute::OverrideValue value=StateAttribute::OFF);
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/** set this StateSet to contain specified attribute and set the associated GLMode's to specified value.*/
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void setTextureAttributeAndModes(unsigned int unit,StateAttribute *attribute, StateAttribute::GLModeValue value=StateAttribute::ON);
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/** set this StateSet to inherit specified attribute type from parents.
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* has the effect of deleting any state attributes of specified type from StateSet.*/
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void setTextureAttributeToInherit(unsigned int unit,StateAttribute::Type type);
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/** get specified Texture related StateAttribute for specified type.
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* returns NULL if no type is contained within StateSet.*/
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StateAttribute* getTextureAttribute(unsigned int unit,StateAttribute::Type type);
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/** get specified Texture related const StateAttribute for specified type.
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* returns NULL if no type is contained within const StateSet.*/
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const StateAttribute* getTextureAttribute(unsigned int unit,StateAttribute::Type type) const;
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/** get specified Texture related RefAttributePair for specified type.
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* returns NULL if no type is contained within StateSet.*/
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const RefAttributePair* getTextureAttributePair(unsigned int unit,StateAttribute::Type type) const;
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/** return the list of all Texture related StateAttributes contained in this StateSet.*/
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inline TextureAttributeList& getTextureAttributeList() { return _textureAttributeList; }
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/** return the const list of all Texture related StateAttributes contained in this const StateSet.*/
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inline const TextureAttributeList& getTextureAttributeList() const { return _textureAttributeList; }
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void setAssociatedModes(const StateAttribute* attribute, StateAttribute::GLModeValue value);
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void setAssociatedTextureModes(unsigned int unit,const StateAttribute* attribute, StateAttribute::GLModeValue value);
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enum RenderingHint
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{
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DEFAULT_BIN = 0,
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OPAQUE_BIN = 1,
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TRANSPARENT_BIN = 2
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};
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/** set the RenderingHint of the StateSet.
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* RenderingHint is used by osgUtil::Renderer to determine which
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* draw bin to drop associated osg::Drawables in. For opaque
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* objects OPAQUE_BIN would typical used, which TRANSPARENT_BIN
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* should be used for objects which need to be depth sorted.*/
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void setRenderingHint(int hint);
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/** get the RenderingHint of the StateSet.*/
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inline int getRenderingHint() const { return _renderingHint; }
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enum RenderBinMode
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{
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INHERIT_RENDERBIN_DETAILS,
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USE_RENDERBIN_DETAILS,
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OVERRIDE_RENDERBIN_DETAILS,
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ENCLOSE_RENDERBIN_DETAILS
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};
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/** set the render bin details.*/
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void setRenderBinDetails(int binNum,const std::string& binName,RenderBinMode mode=USE_RENDERBIN_DETAILS);
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/** set the render bin details to inherit.*/
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void setRenderBinToInherit();
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/** get the render bin mode.*/
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inline RenderBinMode getRenderBinMode() const { return _binMode; }
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/** get whether the render bin details are set and should be used.*/
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inline bool useRenderBinDetails() const { return _binMode!=INHERIT_RENDERBIN_DETAILS; }
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/** get the render bin number.*/
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inline int getBinNumber() const { return _binNum; }
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/** get the render bin name.*/
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inline const std::string& getBinName() const { return _binName; }
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/** call compile on all StateAttributes contained within this StateSet.*/
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void compile(State& state) const;
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protected :
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virtual ~StateSet();
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StateSet& operator = (const StateSet&) { return *this; }
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ModeList _modeList;
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AttributeList _attributeList;
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TextureModeList _textureModeList;
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TextureAttributeList _textureAttributeList;
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inline ModeList& getOrCreateTextureModeList(unsigned int unit)
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{
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if (unit>=_textureModeList.size()) _textureModeList.resize(unit+1);
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return _textureModeList[unit];
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}
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inline AttributeList& getOrCreateTextureAttributeList(unsigned int unit)
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{
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if (unit>=_textureAttributeList.size()) _textureAttributeList.resize(unit+1);
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return _textureAttributeList[unit];
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}
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int compareModes(const ModeList& lhs,const ModeList& rhs);
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int compareAttributePtrs(const AttributeList& lhs,const AttributeList& rhs);
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int compareAttributeContents(const AttributeList& lhs,const AttributeList& rhs);
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void setMode(ModeList& modeList,StateAttribute::GLMode mode, StateAttribute::GLModeValue value);
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void setModeToInherit(ModeList& modeList,StateAttribute::GLMode mode);
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StateAttribute::GLModeValue getMode(const ModeList& modeList,StateAttribute::GLMode mode) const;
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void setAssociatedModes(ModeList& modeList,const StateAttribute* attribute, StateAttribute::GLModeValue value);
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void setAttribute(AttributeList& attributeList,StateAttribute *attribute, const StateAttribute::OverrideValue value=StateAttribute::OFF);
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StateAttribute* getAttribute(AttributeList& attributeList,const StateAttribute::Type type);
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const StateAttribute* getAttribute(const AttributeList& attributeList,const StateAttribute::Type type) const;
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const RefAttributePair* getAttributePair(const AttributeList& attributeList,const StateAttribute::Type type) const;
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int _renderingHint;
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RenderBinMode _binMode;
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int _binNum;
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std::string _binName;
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};
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}
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#endif
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