77 lines
2.5 KiB
C++
77 lines
2.5 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_POLYGONOFFSET
|
|
#define OSG_POLYGONOFFSET 1
|
|
|
|
#include <osg/StateAttribute>
|
|
|
|
namespace osg {
|
|
|
|
/** PolygonOffset - encapsulates the OpenGL glPolygonOffset state.*/
|
|
class SG_EXPORT PolygonOffset : public StateAttribute
|
|
{
|
|
public :
|
|
|
|
PolygonOffset();
|
|
|
|
/** Copy constructor using CopyOp to manage deep vs shallow copy.*/
|
|
PolygonOffset(const PolygonOffset& po,const CopyOp& copyop=CopyOp::SHALLOW_COPY):
|
|
StateAttribute(po,copyop),
|
|
_factor(po._factor),
|
|
_units(po._units) {}
|
|
|
|
META_StateAttribute(osg, PolygonOffset, POLYGONOFFSET);
|
|
|
|
/** 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(PolygonOffset,sa)
|
|
|
|
// compare each paramter in turn against the rhs.
|
|
COMPARE_StateAttribute_Parameter(_factor)
|
|
COMPARE_StateAttribute_Parameter(_units)
|
|
|
|
return 0; // passed all the above comparison macro's, must be equal.
|
|
}
|
|
|
|
virtual void getAssociatedModes(std::vector<GLMode>& modes) const
|
|
{
|
|
modes.push_back(GL_POLYGON_OFFSET_FILL);
|
|
modes.push_back(GL_POLYGON_OFFSET_LINE);
|
|
modes.push_back(GL_POLYGON_OFFSET_POINT);
|
|
}
|
|
|
|
inline void setFactor(float factor) { _factor = factor; }
|
|
inline float getFactor() const { return _factor; }
|
|
|
|
inline void setUnits(float units) { _units = units; }
|
|
inline float getUnits() const { return _units; }
|
|
|
|
virtual void apply(State& state) const;
|
|
|
|
protected :
|
|
|
|
virtual ~PolygonOffset();
|
|
|
|
float _factor;
|
|
float _units;
|
|
|
|
};
|
|
|
|
}
|
|
|
|
#endif
|