HighlightMapGenerator
Go to the documentation of this file.
/* -*-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_HIGHLIGHTMAPGENERATOR_
#define OSGUTIL_HIGHLIGHTMAPGENERATOR_
#include <osgUtil/Export>
#include <osgUtil/CubeMapGenerator>
namespace osgUtil
{
class OSGUTIL_EXPORT HighlightMapGenerator: public CubeMapGenerator {
public:
HighlightMapGenerator(
const osg::Vec3 &light_direction,
const osg::Vec4 &light_color,
float specular_exponent,
int texture_size = 64);
HighlightMapGenerator(const HighlightMapGenerator &copy, const osg::CopyOp &copyop = osg::CopyOp::SHALLOW_COPY);
protected:
virtual ~HighlightMapGenerator() {}
HighlightMapGenerator &operator=(const HighlightMapGenerator &) { return *this; }
inline virtual osg::Vec4 compute_color(const osg::Vec3 &R) const;
private:
osg::Vec3 ldir_;
osg::Vec4 lcol_;
float sexp_;
};
// INLINE METHODS
inline osg::Vec4 HighlightMapGenerator::compute_color(const osg::Vec3 &R) const
{
float v = -ldir_ * (R / R.length());
if (v < 0) v = 0;
osg::Vec4 color(lcol_ * powf(v, sexp_));
color.w() = 1;
return color;
}
}
#endif
CubeMapGenerator
osgUtil::CubeMapGenerator::CubeMapGenerator
CubeMapGenerator(int texture_size=64)
osgUtil::HighlightMapGenerator::~HighlightMapGenerator
virtual ~HighlightMapGenerator()
Definition HighlightMapGenerator:39
osgUtil::HighlightMapGenerator::compute_color
virtual osg::Vec4 compute_color(const osg::Vec3 &R) const
Definition HighlightMapGenerator:52
osgUtil::HighlightMapGenerator::operator=
HighlightMapGenerator & operator=(const HighlightMapGenerator &)
Definition HighlightMapGenerator:40
osgUtil::HighlightMapGenerator::HighlightMapGenerator
HighlightMapGenerator(const HighlightMapGenerator &copy, const osg::CopyOp &copyop=osg::CopyOp::SHALLOW_COPY)
osgUtil::HighlightMapGenerator::HighlightMapGenerator
HighlightMapGenerator(const osg::Vec3 &light_direction, const osg::Vec4 &light_color, float specular_exponent, int texture_size=64)
osg::CopyOp
Definition CopyOp:41
osg::CopyOp::SHALLOW_COPY
@ SHALLOW_COPY
Definition CopyOp:47
osg::Vec3f::length
value_type length() const
Definition Vec3f:176
osg::Vec4f::w
value_type & w()
Definition Vec4f:90
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