f612924a45
copy constructor which takes an optional Cloner object, and the old osg::Object::clone() has changed so that it now requires a Cloner as paramter. This is passed on to the copy constructor to help control the shallow vs deep copying. The old functionality of clone() which was clone of type has been renamed to cloneType(). Updated all of the OSG to work with these new conventions, implemention all the required copy constructors etc. A couple of areas will do shallow copies by design, a couple of other still need to be updated to do either shallow or deep. Neither of the shallow or deep copy operations have been tested yet, only the old functionality of the OSG has been checked so far, such running the viewer on various demo datasets. Also fixed a problem in osg::Optimize::RemoveRendundentNodesVisitor which was not checking that Group didn't have have any attached StateSet's, Callbacks or UserData. These checks have now been added, which fixes a bug which was revealled by the new osgscribe demo, this related to removal of group acting as state decorator. method
93 lines
2.8 KiB
Plaintext
93 lines
2.8 KiB
Plaintext
//C++ header - Open Scene Graph - Copyright (C) 1998-2001 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_FOG
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#define OSG_FOG 1
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#include <osg/Types>
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#include <osg/Vec4>
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#include <osg/StateAttribute>
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#include <osg/StateSet>
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namespace osg {
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/** Fog - encapsulates OpenGL fog state. */
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class SG_EXPORT Fog : public StateAttribute
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{
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public :
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Fog();
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/** Copy constructor using Cloner to manage deep vs shallow copy.*/
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Fog(const Fog& fog,const Cloner& cloner=ShallowCopy()):
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StateAttribute(fog,cloner),
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_mode(fog._mode),
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_density(fog._density),
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_start(fog._start),
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_end(fog._end),
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_color(fog._color) {}
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META_StateAttribute(Fog,FOG);
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/** return -1 if *this < *rhs, 0 if *this==*rhs, 1 if *this>*rhs.*/
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virtual int compare(const StateAttribute& sa) const
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{
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// check the types are equal and then create the rhs variable
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// used by the COMPARE_StateAttribute_Paramter macro's below.
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COMPARE_StateAttribute_Types(Fog,sa)
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// compare each paramter in turn against the rhs.
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COMPARE_StateAttribute_Parameter(_mode)
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COMPARE_StateAttribute_Parameter(_density)
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COMPARE_StateAttribute_Parameter(_start)
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COMPARE_StateAttribute_Parameter(_end)
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COMPARE_StateAttribute_Parameter(_color)
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return 0; // passed all the above comparison macro's, must be equal.
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}
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virtual void setStateSetModes(StateSet& ds,const GLModeValue value) const
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{
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ds.setMode(GL_FOG,value);
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}
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enum Mode {
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LINEAR = GL_LINEAR,
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EXP = GL_EXP,
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EXP2 = GL_EXP2
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};
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inline void setMode( const Mode mode ) { _mode = mode; }
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inline Mode getMode() const { return _mode; }
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inline void setDensity( const float density ) { _density = density; }
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inline const float getDensity() const { return _density; }
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inline void setStart( const float start ) { _start = start; }
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inline const float getStart() const { return _start; }
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inline void setEnd( const float end ) { _end = end; }
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inline const float getEnd() const { return _end; }
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inline void setColor( const Vec4 &color ) { _color = color; }
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inline const Vec4& getColor() const { return _color; }
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virtual void apply(State& state) const;
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protected :
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virtual ~Fog();
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Mode _mode;
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float _density;
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float _start;
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float _end;
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Vec4 _color;
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};
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};
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#endif
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