76 lines
2.3 KiB
Plaintext
76 lines
2.3 KiB
Plaintext
//C++ header - Open Scene Graph - Copyright (C) 1998-2001 Robert Osfield
|
|
//Distributed under the terms of the GNU Library General Public License (LGPL)
|
|
//as published by the Free Software Foundation.
|
|
|
|
#ifndef OSG_POINT
|
|
#define OSG_POINT 1
|
|
|
|
#include <osg/Vec3>
|
|
#include <osg/StateAttribute>
|
|
#include <osg/StateSet>
|
|
|
|
namespace osg {
|
|
|
|
/** Point - encapsulates the OpenGL point smoothing and size state.*/
|
|
class SG_EXPORT Point : public StateAttribute
|
|
{
|
|
public :
|
|
|
|
Point();
|
|
|
|
/** Copy constructor using CopyOp to manage deep vs shallow copy.*/
|
|
Point(const Point& point,const CopyOp& copyop=CopyOp::SHALLOW_COPY):
|
|
StateAttribute(point,copyop),
|
|
_size(point._size),
|
|
_fadeThresholdSize(point._fadeThresholdSize),
|
|
_distanceAttenuation(point._distanceAttenuation) {}
|
|
|
|
META_StateAttribute(Point, POINT);
|
|
|
|
/** return -1 if *this < *rhs, 0 if *this==*rhs, 1 if *this>*rhs.*/
|
|
virtual int compare(const StateAttribute& sa) const
|
|
{
|
|
// check the types are equal and then create the rhs variable
|
|
// used by the COMPARE_StateAttribute_Paramter macro's below.
|
|
COMPARE_StateAttribute_Types(Point,sa)
|
|
|
|
// compare each paramter in turn against the rhs.
|
|
COMPARE_StateAttribute_Parameter(_size)
|
|
COMPARE_StateAttribute_Parameter(_fadeThresholdSize)
|
|
COMPARE_StateAttribute_Parameter(_distanceAttenuation)
|
|
|
|
return 0; // passed all the above comparison macro's, must be equal.
|
|
}
|
|
|
|
virtual void setStateSetModes(StateSet& ds,const GLModeValue value) const
|
|
{
|
|
ds.setMode(GL_POINT_SMOOTH,value);
|
|
}
|
|
|
|
void setSize(const float size);
|
|
inline const float getSize() const { return _size; }
|
|
|
|
void setFadeThresholdSize(const float fadeThresholdSize);
|
|
inline const float getFadeThresholdSize() const { return _fadeThresholdSize; }
|
|
|
|
void setDistanceAttenuation(const Vec3& distanceAttenuation);
|
|
inline const Vec3& getDistanceAttenuation() const { return _distanceAttenuation; }
|
|
|
|
virtual void apply(State& state) const;
|
|
|
|
static void init_GL_EXT();
|
|
|
|
protected :
|
|
|
|
virtual ~Point();
|
|
|
|
float _size;
|
|
float _fadeThresholdSize;
|
|
Vec3 _distanceAttenuation;
|
|
|
|
};
|
|
|
|
};
|
|
|
|
#endif
|