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f763f73ba3
Use a list of predefined colors, and select the color with the larges RGB difference to the source curve. This will ensure that we avoid ending up with fully white or fully black curves, unable to see.
62 lines
2.5 KiB
C++
62 lines
2.5 KiB
C++
/////////////////////////////////////////////////////////////////////////////////
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//
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// Copyright (C) 2018- Equinor ASA
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// Copyright (C) 2017 Statoil ASA
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//
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// ResInsight 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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// ResInsight 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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/////////////////////////////////////////////////////////////////////////////////
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#pragma once
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#include "cvfArray.h"
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#include <QColor>
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//==================================================================================================
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///
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///
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//==================================================================================================
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class RiaColorTools
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{
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public:
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static bool isBrightnessAboveThreshold( cvf::Color3f backgroundColor );
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static cvf::Color3f computeOffsetColor( cvf::Color3f color, float offsetFactor );
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static cvf::Color3f darkContrastColor();
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static cvf::Color3f brightContrastColor();
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static cvf::Color3f darkContrastColorSofter();
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static cvf::Color3f brightContrastColorSofter();
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static cvf::Color3f contrastColor( cvf::Color3f backgroundColor, bool softerContrast = false );
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static QColor toQColor( cvf::Color3f color, float alpha = 1.0f );
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static QColor toQColor( cvf::Color4f color );
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static cvf::Color3f fromQColorTo3f( QColor );
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static cvf::Color3f selectContrastColorFromCandiates( cvf::Color3f color, const cvf::Color3fArray& candidates );
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static QColor textColor();
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static cvf::Color3f textColor3f();
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static cvf::Color3f blendCvfColors( const cvf::Color3f& color1, const cvf::Color3f& color2, int weight1 = 1, int weight2 = 1 );
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static QColor blendQColors( const QColor& color1, const QColor& color2, int weight1 = 1, int weight2 = 1 );
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static cvf::Color3f makeLighter( const cvf::Color3f& color1, float normalizedScalingFactor );
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// Factor > 1 increases saturation, a factor < 1 decreases saturation
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static QColor modifySaturation( const QColor& color, double factor );
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private:
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static float relativeLuminance( cvf::Color3f backgroundColor );
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static float calculateNonLinearColorValue( float colorFraction );
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};
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