root/OpenSceneGraph/trunk/include/osg/ColorMatrix @ 13041

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1/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2006 Robert Osfield
2 *
3 * This library is open source and may be redistributed and/or modified under
4 * the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
5 * (at your option) any later version.  The full license is in LICENSE file
6 * included with this distribution, and on the openscenegraph.org website.
7 *
8 * This library is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
11 * OpenSceneGraph Public License for more details.
12*/
13
14#ifndef OSG_COLORMATRIX
15#define OSG_COLORMATRIX 1
16
17#include <osg/Matrix>
18#include <osg/StateAttribute>
19
20namespace osg {
21
22/** Encapsulates OpenGL color matrix functionality. */
23class OSG_EXPORT ColorMatrix : public StateAttribute
24{
25    public :
26
27        ColorMatrix();
28
29        /** Copy constructor using CopyOp to manage deep vs shallow copy. */
30        ColorMatrix(const ColorMatrix& cm,const CopyOp& copyop=CopyOp::SHALLOW_COPY):
31            StateAttribute(cm,copyop),
32            _matrix(cm._matrix) {}
33
34        META_StateAttribute(osg, ColorMatrix, COLORMATRIX);
35
36        /** Return -1 if *this < *rhs, 0 if *this==*rhs, 1 if *this>*rhs. */
37        virtual int compare(const StateAttribute& sa) const
38        {
39            // Check for equal types, then create the rhs variable
40            // used by the COMPARE_StateAttribute_Parameter macros below.
41            COMPARE_StateAttribute_Types(ColorMatrix,sa)
42
43            // Compare each parameter in turn against the rhs.
44            COMPARE_StateAttribute_Parameter(_matrix)
45
46            return 0; // Passed all the above comparison macros, so must be equal.
47        }
48
49        /** Sets the color matrix. */
50        inline void setMatrix(const Matrix& matrix) { _matrix = matrix; }
51
52        /** Gets the color matrix. */
53        inline Matrix& getMatrix() { return _matrix; }
54
55        /** Gets the const color matrix. */
56        inline const Matrix& getMatrix() const { return _matrix; }
57
58        /** Applies as OpenGL texture matrix. */
59        virtual void apply(State& state) const;
60
61    protected:
62
63        virtual ~ColorMatrix( void );
64
65        Matrix _matrix;
66
67};
68
69}
70
71
72#endif
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