97 lines
3.2 KiB
C++
97 lines
3.2 KiB
C++
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2003 Robert Osfield
|
|
*
|
|
* This library is open source and may be redistributed and/or modified under
|
|
* the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
|
|
* (at your option) any later version. The full license is in LICENSE file
|
|
* included with this distribution, and on the openscenegraph.org website.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* OpenSceneGraph Public License for more details.
|
|
*/
|
|
|
|
#ifndef OSG_POINT
|
|
#define OSG_POINT 1
|
|
|
|
#include <osg/Vec3>
|
|
#include <osg/StateAttribute>
|
|
|
|
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),
|
|
_minSize(point._minSize),
|
|
_maxSize(point._maxSize) {}
|
|
|
|
META_StateAttribute(osg, 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)
|
|
COMPARE_StateAttribute_Parameter(_minSize)
|
|
COMPARE_StateAttribute_Parameter(_maxSize)
|
|
|
|
return 0; // passed all the above comparison macro's, must be equal.
|
|
}
|
|
|
|
virtual bool getModeUsage(ModeUsage& usage) const
|
|
{
|
|
usage.usesMode(GL_POINT_SMOOTH);
|
|
return true;
|
|
}
|
|
|
|
void setSize(float size);
|
|
inline float getSize() const { return _size; }
|
|
|
|
void setFadeThresholdSize(float fadeThresholdSize);
|
|
inline float getFadeThresholdSize() const { return _fadeThresholdSize; }
|
|
|
|
void setDistanceAttenuation(const Vec3& distanceAttenuation);
|
|
inline const Vec3& getDistanceAttenuation() const { return _distanceAttenuation; }
|
|
|
|
void setMinSize(float minSize);
|
|
inline float getMinSize() const {return _minSize;}
|
|
|
|
void setMaxSize(float maxSize);
|
|
inline float getMaxSize() const {return _maxSize;}
|
|
|
|
virtual void apply(State& state) const;
|
|
|
|
static void init_GL_EXT();
|
|
|
|
protected :
|
|
|
|
virtual ~Point();
|
|
|
|
float _size;
|
|
float _fadeThresholdSize;
|
|
Vec3 _distanceAttenuation;
|
|
float _minSize;
|
|
float _maxSize;
|
|
|
|
};
|
|
|
|
}
|
|
|
|
#endif
|