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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 OSGSIM_SCALARSTCOLORS
#define OSGSIM_SCALARSTCOLORS 1
#include <osgSim/Export>
#include <osg/Vec4>
#include <osg/Referenced>
namespace osgSim
{
/**
ScalarsToColors defines the interface to map a scalar value to a color,
and provides a default implementation of the mapping functionaltity,
with colors ranging from black to white across the min - max scalar
range.
*/
class OSGSIM_EXPORT ScalarsToColors: public osg::Referenced
{
public:
ScalarsToColors(float scalarMin, float scalarMax);
virtual ~ScalarsToColors() {}
/** Get the color for a given scalar value. */
virtual osg::Vec4 getColor(float scalar) const;
/** Get the minimum scalar value. */
float getMin() const;
/** Get the maximum scalar value. */
float getMax() const;
private:
float _min, _max;
};
}
#endif
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