13e8af6305
highlighted problems with Light, ClipPlane and Hint usage in osg::State's usage of cloneType and reassignment of target/num in StateSet/these StateAttributes.
119 lines
4.3 KiB
C++
119 lines
4.3 KiB
C++
/* -*-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_CLIPPLANE
|
|
#define OSG_CLIPPLANE 1
|
|
|
|
#include <osg/Vec4d>
|
|
#include <osg/Plane>
|
|
#include <osg/StateAttribute>
|
|
|
|
namespace osg {
|
|
|
|
/** Encapsulates OpenGL glClipPlane().
|
|
*/
|
|
class OSG_EXPORT ClipPlane : public StateAttribute
|
|
{
|
|
public :
|
|
|
|
ClipPlane();
|
|
inline ClipPlane(unsigned int no) { setClipPlaneNum(no); }
|
|
inline ClipPlane(unsigned int no,const Vec4d& plane) { setClipPlaneNum(no); setClipPlane(plane); }
|
|
inline ClipPlane(unsigned int no,const Plane& plane) { setClipPlaneNum(no); setClipPlane(plane); }
|
|
inline ClipPlane(unsigned int no,double a,double b,double c,double d) { setClipPlaneNum(no); setClipPlane(a,b,c,d); }
|
|
|
|
/** Copy constructor using CopyOp to manage deep vs shallow copy. */
|
|
ClipPlane(const ClipPlane& cp,const CopyOp& copyop=CopyOp::SHALLOW_COPY):
|
|
StateAttribute(cp,copyop)
|
|
{
|
|
_clipPlane[0]=cp._clipPlane[0];
|
|
_clipPlane[1]=cp._clipPlane[1];
|
|
_clipPlane[2]=cp._clipPlane[2];
|
|
_clipPlane[3]=cp._clipPlane[3];
|
|
_clipPlaneNum=cp._clipPlaneNum;
|
|
}
|
|
|
|
virtual osg::Object* cloneType() const { return new ClipPlane( _clipPlaneNum ); }
|
|
virtual osg::Object* clone(const osg::CopyOp& copyop) const { return new ClipPlane(*this,copyop); }
|
|
virtual bool isSameKindAs(const osg::Object* obj) const { return dynamic_cast<const ClipPlane *>(obj)!=NULL; }
|
|
virtual const char* libraryName() const { return "osg"; }
|
|
virtual const char* className() const { return "ClipPlane"; }
|
|
virtual Type getType() const { return CLIPPLANE; }
|
|
|
|
/** 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_Paramter macros below.
|
|
COMPARE_StateAttribute_Types(ClipPlane,sa)
|
|
|
|
// Compare each parameter in turn against the rhs.
|
|
COMPARE_StateAttribute_Parameter(_clipPlaneNum)
|
|
COMPARE_StateAttribute_Parameter(_clipPlane[0])
|
|
COMPARE_StateAttribute_Parameter(_clipPlane[1])
|
|
COMPARE_StateAttribute_Parameter(_clipPlane[2])
|
|
COMPARE_StateAttribute_Parameter(_clipPlane[3])
|
|
|
|
return 0; // Passed all the above comparison macros, so must be equal.
|
|
}
|
|
|
|
virtual unsigned int getMember() const { return _clipPlaneNum; }
|
|
|
|
virtual bool getModeUsage(StateAttribute::ModeUsage& usage) const
|
|
{
|
|
usage.usesMode((GLMode)(GL_CLIP_PLANE0+_clipPlaneNum));
|
|
return true;
|
|
}
|
|
|
|
|
|
/** Set the clip plane with the given Plane. */
|
|
void setClipPlane(const Plane& plane)
|
|
{
|
|
_clipPlane.set(plane[0],plane[1],plane[2],plane[3]);
|
|
}
|
|
|
|
/** Defines the plane as [ a b c d ]. */
|
|
void setClipPlane(double a,double b,double c,double d)
|
|
{
|
|
_clipPlane.set(a,b,c,d);
|
|
}
|
|
|
|
/** Set the clip plane with the given Vec4. */
|
|
inline void setClipPlane(const Vec4d& plane) { _clipPlane = plane; }
|
|
|
|
/** Gets the clip plane as a Vec4d. */
|
|
const Vec4d& getClipPlane() const { return _clipPlane; }
|
|
|
|
|
|
/** Sets the clip plane number. */
|
|
void setClipPlaneNum(unsigned int num);
|
|
|
|
/** Gets the clip plane number. */
|
|
unsigned int getClipPlaneNum() const;
|
|
|
|
/** Applies the clip plane's state to the OpenGL state machine. */
|
|
virtual void apply(State& state) const;
|
|
|
|
protected :
|
|
|
|
virtual ~ClipPlane();
|
|
|
|
Vec4d _clipPlane;
|
|
unsigned int _clipPlaneNum;
|
|
|
|
};
|
|
|
|
}
|
|
|
|
#endif
|