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.
110 lines
3.1 KiB
110 lines
3.1 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_Scissor |
|
#define OSG_Scissor 1 |
|
|
|
#include <osg/StateAttribute> |
|
|
|
namespace osg { |
|
|
|
/** Encapsulate OpenGL glScissor. */ |
|
class OSG_EXPORT Scissor : public StateAttribute |
|
{ |
|
public : |
|
Scissor(); |
|
|
|
Scissor(int x,int y,int width,int height): |
|
_x(x), |
|
_y(y), |
|
_width(width), |
|
_height(height) {} |
|
|
|
|
|
/** Copy constructor using CopyOp to manage deep vs shallow copy. */ |
|
Scissor(const Scissor& vp,const CopyOp& copyop=CopyOp::SHALLOW_COPY): |
|
StateAttribute(vp,copyop), |
|
_x(vp._x), |
|
_y(vp._y), |
|
_width(vp._width), |
|
_height(vp._height) {} |
|
|
|
META_StateAttribute(osg, Scissor, SCISSOR); |
|
|
|
/** 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(Scissor,sa) |
|
|
|
// compare each parameter in turn against the rhs. |
|
COMPARE_StateAttribute_Parameter(_x) |
|
COMPARE_StateAttribute_Parameter(_y) |
|
COMPARE_StateAttribute_Parameter(_width) |
|
COMPARE_StateAttribute_Parameter(_height) |
|
|
|
return 0; // passed all the above comparison macros, must be equal. |
|
} |
|
|
|
|
|
virtual bool getModeUsage(StateAttribute::ModeUsage& usage) const |
|
{ |
|
usage.usesMode(GL_SCISSOR_TEST); |
|
return true; |
|
} |
|
|
|
inline void setScissor(int x,int y,int width,int height) |
|
{ |
|
_x = x; |
|
_y = y; |
|
_width = width; |
|
_height = height; |
|
} |
|
|
|
void getScissor(int& x,int& y,int& width,int& height) const |
|
{ |
|
x = _x; |
|
y = _y; |
|
width = _width; |
|
height = _height; |
|
} |
|
|
|
inline int& x() { return _x; } |
|
inline int x() const { return _x; } |
|
|
|
inline int& y() { return _y; } |
|
inline int y() const { return _y; } |
|
|
|
inline int& width() { return _width; } |
|
inline int width() const { return _width; } |
|
|
|
inline int& height() { return _height; } |
|
inline int height() const { return _height; } |
|
|
|
virtual void apply(State& state) const; |
|
|
|
protected: |
|
|
|
virtual ~Scissor(); |
|
|
|
int _x; |
|
int _y; |
|
int _width; |
|
int _height; |
|
|
|
}; |
|
|
|
} |
|
|
|
#endif
|
|
|