You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
70 lines
2.1 KiB
70 lines
2.1 KiB
/* -*-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_FRONTFACE |
|
#define OSG_FRONTFACE 1 |
|
|
|
#include <osg/StateAttribute> |
|
#include <osg/GL> |
|
|
|
namespace osg { |
|
|
|
/** Class to specify the orientation of front-facing polygons. |
|
*/ |
|
class OSG_EXPORT FrontFace : public StateAttribute |
|
{ |
|
public : |
|
|
|
enum Mode { |
|
CLOCKWISE = GL_CW, |
|
COUNTER_CLOCKWISE = GL_CCW |
|
}; |
|
|
|
FrontFace(Mode face=COUNTER_CLOCKWISE); |
|
|
|
/** Copy constructor using CopyOp to manage deep vs shallow copy.*/ |
|
FrontFace(const FrontFace& ff,const CopyOp& copyop=CopyOp::SHALLOW_COPY): |
|
StateAttribute(ff,copyop), |
|
_mode(ff._mode) {} |
|
|
|
META_StateAttribute(osg, FrontFace, FRONTFACE); |
|
|
|
/** 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(FrontFace,sa) |
|
|
|
// compare each parameter in turn against the rhs. |
|
COMPARE_StateAttribute_Parameter(_mode) |
|
|
|
return 0; // passed all the above comparison macros, must be equal. |
|
} |
|
|
|
inline void setMode(Mode mode) { _mode = mode; } |
|
inline Mode getMode() const { return _mode; } |
|
|
|
virtual void apply(State& state) const; |
|
|
|
protected: |
|
|
|
virtual ~FrontFace(); |
|
|
|
Mode _mode; |
|
|
|
}; |
|
|
|
} |
|
|
|
#endif
|
|
|