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90 lines
3.8 KiB
C++
90 lines
3.8 KiB
C++
//##################################################################################################
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//
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// Custom Visualization Core library
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// Copyright (C) 2011-2013 Ceetron AS
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//
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// This library may be used under the terms of either the GNU General Public License or
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// the GNU Lesser General Public License as follows:
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//
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// GNU General Public License Usage
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// This library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful, but WITHOUT ANY
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// WARRANTY; without even the implied warranty of MERCHANTABILITY or
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// FITNESS FOR A PARTICULAR PURPOSE.
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//
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// See the GNU General Public License at <<http://www.gnu.org/licenses/gpl.html>>
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// for more details.
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//
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// GNU Lesser General Public License Usage
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// This library is free software; you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation; either version 2.1 of the License, or
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// (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful, but WITHOUT ANY
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// WARRANTY; without even the implied warranty of MERCHANTABILITY or
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// FITNESS FOR A PARTICULAR PURPOSE.
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//
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// See the GNU Lesser General Public License at <<http://www.gnu.org/licenses/lgpl-2.1.html>>
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// for more details.
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//
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//##################################################################################################
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#pragma once
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#include "cvfScalarMapper.h"
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namespace cvf {
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//==================================================================================================
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//
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// A base class that implements the common things between ordinary range based legends.
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//
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//==================================================================================================
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class ScalarMapperRangeBased : public ScalarMapper
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{
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public:
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ScalarMapperRangeBased();
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// Public interface for setting up the mapping
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void setRange(double min, double max);
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void setLevelCount(size_t colorCount, bool adjustLevels);
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void setLevelsFromValues(const std::set<double>& levelValues);
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void setColors(const Color3ubArray& colorArray);
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void setColors(ColorTable colorTable);
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// Implementing some of the Scalarmapper interface
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virtual Vec2f mapToTextureCoord(double scalarValue) const;
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virtual Color3ub mapToColor(double scalarValue) const;
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virtual bool updateTexture(TextureImage* image) const;
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virtual void majorTickValues(std::vector<double>* domainValues ) const;
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protected:
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virtual void rangeUpdated() {}; //< Called when the range is changed. Subclasses can reimplment to recalculate cached values
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Color3ub colorFromUserColorGradient(double normalizedValue) const;
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double m_rangeMin;
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double m_rangeMax;
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unsigned int m_decadeLevelCount;
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std::set<double> m_sortedLevels;
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private:
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void updateSortedLevels();
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private:
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size_t m_levelCount; //< Number of discrete colors between min and max or number of sections between major ticks
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bool m_adjustLevels; //< Toggles wether to round tick positions to nice numbers
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std::set<double> m_userDefinedLevelValues;
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Color3ubArray m_interpolatedUserGradientColors; //< Table of smooth interpolated colors as a result of the users color request
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uint m_textureSize; // The size of texture that updateTexture() will produce.
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};
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}
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