67 lines
2.0 KiB
C++
67 lines
2.0 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_COLORRANGE
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#define OSGSIM_COLORRANGE 1
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#include <osgSim/Export>
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#include <osgSim/ScalarsToColors>
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#include <vector>
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namespace osgSim
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{
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/**
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ColorRange is a ScalarsToColors object to define a color spectrum
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for a scalar range. An optional vector of colors may be passed in at
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construction time. The range of colors will be mapped to the scalar range,
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and interpolation between the colors will be performed as necessary.
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By default, the color range will run Red-Yellow-Green-Cyan-Blue.
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*/
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class OSGSIM_EXPORT ColorRange: public ScalarsToColors
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{
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public:
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/** Constructor for a ColorRange with a default list of colors set to Red-Yellow-Green-Blue-Cyan
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@param min minimum scalar value
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@param max maximum scalar value
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*/
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ColorRange(float min, float max);
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/** Constructor for a ColorRange
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@param min minimum scalar value
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@param max maximum scalar value
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@param colors optional range of colors,
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*/
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ColorRange(float min, float max, const std::vector<osg::Vec4>& colors);
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/** Set the range of colors. */
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void setColors(const std::vector<osg::Vec4>& colors);
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/** Get the range of colors */
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const std::vector<osg::Vec4>& getColors() const { return _colors; }
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/** Get the color for a given scalar value. */
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osg::Vec4 getColor(float scalar) const;
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private:
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// Default assignment and copy construction are OK.
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std::vector<osg::Vec4> _colors;
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};
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}
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#endif
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