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/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2016 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_DepthRangeIndexed
#define OSG_DepthRangeIndexed 1
#include <osg/Depth>
namespace osg {
/** Encapsulates glDepthRangeIndexed function : the index version of glDepth
*/
class OSG_EXPORT DepthRangeIndexed : public osg::StateAttribute
{
public :
DepthRangeIndexed();
DepthRangeIndexed(unsigned int index, double zNear=0.0, double zFar=1.0):
_index(index),
_zNear(zNear),
_zFar(zFar) {}
/** Copy constructor using CopyOp to manage deep vs shallow copy. */
DepthRangeIndexed(const DepthRangeIndexed& dp,const CopyOp& copyop=CopyOp::SHALLOW_COPY):
StateAttribute(dp,copyop),
_index(dp._index),
_zNear(dp._zNear),
_zFar(dp._zFar) {}
META_StateAttribute(osg, DepthRangeIndexed, DEPTHRANGEINDEXED);
/** Return -1 if *this < *rhs, 0 if *this==*rhs, 1 if *this>*rhs. */
virtual int compare(const StateAttribute& sa) const
{
// Check for equal types, then create the rhs variable
// used by the COMPARE_StateAttribute_Parameter macros below.
COMPARE_StateAttribute_Types(DepthRangeIndexed,sa)
COMPARE_StateAttribute_Parameter(_index);
COMPARE_StateAttribute_Parameter(_zNear)
COMPARE_StateAttribute_Parameter(_zFar)
return 0;
}
/** Return the buffer index as the member identifier.*/
virtual unsigned int getMember() const { return _index; }
/** Set the index of the DepthRangeIndexed. */
void setIndex(unsigned int index);
/** Get the index of the DepthRangeIndexed. */
unsigned int getIndex() const { return _index; }
inline void setZNear(double zNear) { _zNear=zNear; }
inline double getZNear() const { return _zNear; }
inline void setZFar(double zFar) { _zFar=zFar; }
inline double getZFar() const { return _zFar; }
virtual void apply(State& state) const;
protected:
virtual ~DepthRangeIndexed();
unsigned int _index;
double _zNear;
double _zFar;
};
}
#endif
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