54 lines
1.4 KiB
C++
54 lines
1.4 KiB
C++
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2006 Robert Osfield
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*
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* This library is open source and may be redistributed and/or modified under
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* the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
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* (at your option) any later version. The full license is in LICENSE file
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* included with this distribution, and on the openscenegraph.org website.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* OpenSceneGraph Public License for more details.
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*/
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#ifndef OSGSIM_SCALARSTCOLORS
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#define OSGSIM_SCALARSTCOLORS 1
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#include <osgSim/Export>
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#include <osg/Vec4>
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#include <osg/Referenced>
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namespace osgSim
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{
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/**
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ScalarsToColors defines the interface to map a scalar value to a color,
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and provides a default implementation of the mapping functionaltity,
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with colors ranging from black to white across the min - max scalar
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range.
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*/
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class OSGSIM_EXPORT ScalarsToColors: public osg::Referenced
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{
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public:
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ScalarsToColors(float scalarMin, float scalarMax);
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virtual ~ScalarsToColors() {}
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/** Get the color for a given scalar value. */
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virtual osg::Vec4 getColor(float scalar) const;
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/** Get the minimum scalar value. */
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float getMin() const;
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/** Get the maximum scalar value. */
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float getMax() const;
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private:
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float _min, _max;
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};
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}
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#endif
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