76 lines
2.3 KiB
Plaintext
76 lines
2.3 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_POINT
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#define OSG_POINT 1
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#include <osg/Vec3>
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#include <osg/StateAttribute>
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#include <osg/StateSet>
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namespace osg {
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/** Point - encapsulates the OpenGL point smoothing and size state.*/
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class SG_EXPORT Point : public StateAttribute
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{
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public :
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Point();
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/** Copy constructor using CopyOp to manage deep vs shallow copy.*/
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Point(const Point& point,const CopyOp& copyop=CopyOp::SHALLOW_COPY):
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StateAttribute(point,copyop),
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_size(point._size),
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_fadeThresholdSize(point._fadeThresholdSize),
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_distanceAttenuation(point._distanceAttenuation) {}
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META_StateAttribute(Point, POINT);
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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(Point,sa)
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// compare each paramter in turn against the rhs.
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COMPARE_StateAttribute_Parameter(_size)
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COMPARE_StateAttribute_Parameter(_fadeThresholdSize)
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COMPARE_StateAttribute_Parameter(_distanceAttenuation)
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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_POINT_SMOOTH,value);
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}
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void setSize(const float size);
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inline const float getSize() const { return _size; }
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void setFadeThresholdSize(const float fadeThresholdSize);
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inline const float getFadeThresholdSize() const { return _fadeThresholdSize; }
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void setDistanceAttenuation(const Vec3& distanceAttenuation);
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inline const Vec3& getDistanceAttenuation() const { return _distanceAttenuation; }
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virtual void apply(State& state) const;
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static void init_GL_EXT();
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protected :
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virtual ~Point();
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float _size;
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float _fadeThresholdSize;
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Vec3 _distanceAttenuation;
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};
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}
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#endif
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