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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_POLYGONMODE
#define OSG_POLYGONMODE 1
#include <osg/StateAttribute>
#include <osg/GL>
#if defined(OSG_GLES1_AVAILABLE) || defined(OSG_GLES2_AVAILABLE)
#define GL_POINT 0x1B00
#define GL_LINE 0x1B01
#define GL_FILL 0x1B02
#endif
namespace osg {
/** State Class for setting OpenGL's polygon culling mode.
*/
class OSG_EXPORT PolygonMode : public StateAttribute
{
public :
enum Mode {
POINT = GL_POINT,
LINE = GL_LINE,
FILL = GL_FILL
};
enum Face {
FRONT_AND_BACK,
FRONT,
BACK
};
PolygonMode();
PolygonMode(Face face,Mode mode);
/** Copy constructor using CopyOp to manage deep vs shallow copy.*/
PolygonMode(const PolygonMode& pm,const CopyOp& copyop=CopyOp::SHALLOW_COPY):
StateAttribute(pm,copyop),
_modeFront(pm._modeFront),
_modeBack(pm._modeBack) {}
META_StateAttribute(osg, PolygonMode, POLYGONMODE);
/** 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_Parameter macros below.
COMPARE_StateAttribute_Types(PolygonMode,sa)
// compare each parameter in turn against the rhs.
COMPARE_StateAttribute_Parameter(_modeFront)
COMPARE_StateAttribute_Parameter(_modeBack)
return 0; // passed all the above comparison macros, must be equal.
}
void setMode(Face face,Mode mode);
Mode getMode(Face face) const;
inline bool getFrontAndBack() const { return _modeFront==_modeBack; }
virtual void apply(State& state) const;
protected:
virtual ~PolygonMode();
Mode _modeFront;
Mode _modeBack;
};
}
#endif
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