PointSprite
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/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2006 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_POINTSPRITE
#define OSG_POINTSPRITE 1
#include <osg/GL>
#include <osg/StateAttribute>
#ifndef GL_ARB_point_sprite
#define GL_POINT_SPRITE_ARB 0x8861
#define GL_COORD_REPLACE_ARB 0x8862
#endif
#ifndef GL_POINT_SPRITE_COORD_ORIGIN
#define GL_POINT_SPRITE_COORD_ORIGIN 0x8CA0
#define GL_LOWER_LEFT 0x8CA1
#define GL_UPPER_LEFT 0x8CA2
#endif
namespace osg {
class OSG_EXPORT PointSprite : public osg::StateAttribute {
public:
PointSprite();
PointSprite(const PointSprite& ps,const osg::CopyOp& copyop=osg::CopyOp::SHALLOW_COPY):
StateAttribute(ps,copyop),
_coordOriginMode(ps._coordOriginMode) {}
META_StateAttribute(osg, PointSprite, POINTSPRITE);
virtual int compare(const StateAttribute& sa) const;
virtual bool getModeUsage(StateAttribute::ModeUsage& usage) const
{
usage.usesMode(GL_POINT_SPRITE_ARB);
return true;
}
virtual bool checkValidityOfAssociatedModes(osg::State&) const;
virtual bool isTextureAttribute() const { return true; }
virtual void apply(osg::State& state) const;
enum CoordOriginMode {
UPPER_LEFT = GL_UPPER_LEFT,
LOWER_LEFT = GL_LOWER_LEFT
};
inline void setCoordOriginMode(CoordOriginMode mode) { _coordOriginMode = mode; }
inline CoordOriginMode getCoordOriginMode() const { return _coordOriginMode; }
protected:
virtual ~PointSprite();
CoordOriginMode _coordOriginMode;
};
}
#endif
GL_UPPER_LEFT
#define GL_UPPER_LEFT
Definition GLDefines:129
GL_LOWER_LEFT
#define GL_LOWER_LEFT
Definition GLDefines:128
GL_POINT_SPRITE_ARB
#define GL_POINT_SPRITE_ARB
Definition PointSprite:21
StateAttribute
osg::CopyOp
Definition CopyOp:41
osg::CopyOp::SHALLOW_COPY
@ SHALLOW_COPY
Definition CopyOp:47
osg::PointSprite::getCoordOriginMode
CoordOriginMode getCoordOriginMode() const
Definition PointSprite:68
osg::PointSprite::CoordOriginMode
CoordOriginMode
Definition PointSprite:62
osg::PointSprite::LOWER_LEFT
@ LOWER_LEFT
Definition PointSprite:64
osg::PointSprite::UPPER_LEFT
@ UPPER_LEFT
Definition PointSprite:63
osg::PointSprite::apply
virtual void apply(osg::State &state) const
osg::PointSprite::getModeUsage
virtual bool getModeUsage(StateAttribute::ModeUsage &usage) const
Definition PointSprite:50
osg::PointSprite::checkValidityOfAssociatedModes
virtual bool checkValidityOfAssociatedModes(osg::State &) const
osg::PointSprite::PointSprite
PointSprite(const PointSprite &ps, const osg::CopyOp &copyop=osg::CopyOp::SHALLOW_COPY)
Definition PointSprite:40
osg::PointSprite::compare
virtual int compare(const StateAttribute &sa) const
osg::PointSprite::setCoordOriginMode
void setCoordOriginMode(CoordOriginMode mode)
Definition PointSprite:67
osg::PointSprite::PointSprite
PointSprite()
osg::PointSprite::~PointSprite
virtual ~PointSprite()
osg::PointSprite::META_StateAttribute
META_StateAttribute(osg, PointSprite, POINTSPRITE)
osg::PointSprite::_coordOriginMode
CoordOriginMode _coordOriginMode
Definition PointSprite:73
osg::PointSprite::isTextureAttribute
virtual bool isTextureAttribute() const
Definition PointSprite:58
osg::StateAttribute
Definition StateAttribute:77
osg::StateAttribute::StateAttribute
StateAttribute()
osg::StateAttribute::POINTSPRITE
@ POINTSPRITE
Definition StateAttribute:163
osg::State
Definition State:80
osg
Definition AlphaFunc:19
OSG_EXPORT
#define OSG_EXPORT
Definition osg/Export:39
osg::StateAttribute::ModeUsage
Definition StateAttribute:308
osg::StateAttribute::ModeUsage::usesMode
virtual void usesMode(GLMode mode)=0