HalfWayMapGenerator
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/* -*-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 OSGUTIL_HALFWAYMAPGENERATOR_
#define OSGUTIL_HALFWAYMAPGENERATOR_
#include <osgUtil/Export>
#include <osgUtil/CubeMapGenerator>
namespace osgUtil
{
class OSGUTIL_EXPORT HalfWayMapGenerator: public CubeMapGenerator {
public:
HalfWayMapGenerator(const osg::Vec3 &light_direction, int texture_size = 64);
HalfWayMapGenerator(const HalfWayMapGenerator &copy, const osg::CopyOp &copyop);
protected:
virtual ~HalfWayMapGenerator() {}
HalfWayMapGenerator &operator=(const HalfWayMapGenerator &) { return *this; }
inline virtual osg::Vec4 compute_color(const osg::Vec3 &R) const;
private:
osg::Vec3 ldir_;
};
// INLINE METHODS
inline osg::Vec4 HalfWayMapGenerator::compute_color(const osg::Vec3 &R) const
{
const osg::Vec3 V = (R / R.length()) - ldir_;
return vector_to_color(V / V.length());
}
}
#endif
CubeMapGenerator
osgUtil::CubeMapGenerator::CubeMapGenerator
CubeMapGenerator(int texture_size=64)
osgUtil::CubeMapGenerator::vector_to_color
static osg::Vec4 vector_to_color(const osg::Vec3 &vec)
Definition CubeMapGenerator:110
osgUtil::HalfWayMapGenerator::~HalfWayMapGenerator
virtual ~HalfWayMapGenerator()
Definition HalfWayMapGenerator:34
osgUtil::HalfWayMapGenerator::HalfWayMapGenerator
HalfWayMapGenerator(const HalfWayMapGenerator &copy, const osg::CopyOp &copyop)
osgUtil::HalfWayMapGenerator::operator=
HalfWayMapGenerator & operator=(const HalfWayMapGenerator &)
Definition HalfWayMapGenerator:35
osgUtil::HalfWayMapGenerator::HalfWayMapGenerator
HalfWayMapGenerator(const osg::Vec3 &light_direction, int texture_size=64)
osgUtil::HalfWayMapGenerator::compute_color
virtual osg::Vec4 compute_color(const osg::Vec3 &R) const
Definition HalfWayMapGenerator:45
osg::CopyOp
Definition CopyOp:41
osg::Vec3f::length
value_type length() const
Definition Vec3f:176
osgUtil
Definition NodeVisitor:25
osg::Vec3
Vec3f Vec3
Definition Vec3:21
osg::Vec4
Vec4f Vec4
Definition Vec4:21
Export
OSGUTIL_EXPORT
#define OSGUTIL_EXPORT
Definition osgUtil/Export:40