9917b6500d
//C++ header to help scripts and editors pick up the fact that the file is a header file.
81 lines
2.2 KiB
Plaintext
81 lines
2.2 KiB
Plaintext
//C++ header - Open Scene Graph - Copyright (C) 1998-2001 Robert Osfield
|
|
//Distributed under the terms of the GNU Library General Public License (LGPL)
|
|
//as published by the Free Software Foundation.
|
|
|
|
#ifndef OSG_VIEWPORT
|
|
#define OSG_VIEWPORT 1
|
|
|
|
#include <osg/StateAttribute>
|
|
#include <osg/StateSet>
|
|
#include <osg/Types>
|
|
|
|
namespace osg {
|
|
|
|
/** Encapsulte OpenGL glViewport.
|
|
*/
|
|
class SG_EXPORT Viewport : public StateAttribute
|
|
{
|
|
public :
|
|
|
|
|
|
Viewport();
|
|
|
|
META_StateAttribute(Viewport,VIEWPORT);
|
|
|
|
/** 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(Viewport,sa)
|
|
|
|
// compare each paramter 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 macro's, must be equal.
|
|
}
|
|
|
|
inline void setViewport(const int x,const int y,const int width,const int height)
|
|
{
|
|
_x = x;
|
|
_y = y;
|
|
_width = width;
|
|
_height = height;
|
|
}
|
|
|
|
void getViewport(int& x,int& y,int& width,int& height)
|
|
{
|
|
x = _x;
|
|
y = _y;
|
|
width = _width;
|
|
height = _height;
|
|
}
|
|
|
|
inline const int x() const { return _x; }
|
|
inline const int y() const { return _y; }
|
|
inline const int width() const { return _width; }
|
|
inline const int height() const { return _height; }
|
|
|
|
/** return the aspcetRatio of the viewport, which is equal to width/height.*/
|
|
inline const float aspectRatio() const { return (float)_width/(float)_height; }
|
|
|
|
virtual void apply(State& state) const;
|
|
|
|
protected:
|
|
|
|
virtual ~Viewport();
|
|
|
|
int _x;
|
|
int _y;
|
|
int _width;
|
|
int _height;
|
|
|
|
};
|
|
|
|
};
|
|
|
|
#endif
|