root/OpenSceneGraph/trunk/include/osgUtil/ReflectionMapGenerator @ 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#ifndef OSGUTIL_REFLECTIONMAPGENERATOR_
14#define OSGUTIL_REFLECTIONMAPGENERATOR_
15
16#include <osgUtil/CubeMapGenerator>
17
18namespace osgUtil
19{
20
21    /** This is the most simple cube map generator. It performs a direct association
22        between reflection vector and RGBA color (C = R).
23    */
24    class ReflectionMapGenerator: public CubeMapGenerator {
25    public:
26        inline ReflectionMapGenerator(int texture_size = 64);
27        inline ReflectionMapGenerator(const ReflectionMapGenerator &copy, const osg::CopyOp &copyop = osg::CopyOp::SHALLOW_COPY);
28
29    protected:
30        virtual ~ReflectionMapGenerator() {}
31        ReflectionMapGenerator &operator=(const ReflectionMapGenerator &) { return *this; }
32
33        inline virtual osg::Vec4 compute_color(const osg::Vec3 &R) const;
34    };
35
36    // INLINE METHODS
37
38    inline ReflectionMapGenerator::ReflectionMapGenerator(int texture_size)
39        : CubeMapGenerator(texture_size)
40    {
41    }
42
43    inline ReflectionMapGenerator::ReflectionMapGenerator(const ReflectionMapGenerator &copy, const osg::CopyOp &copyop)
44        : CubeMapGenerator(copy, copyop)
45    {
46    }
47
48    inline osg::Vec4 ReflectionMapGenerator::compute_color(const osg::Vec3 &R) const
49    {
50        return vector_to_color(R / R.length());
51    }
52
53}
54
55#endif
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