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1 | #ifndef SCIQLOP_COLORUTILS_H | |
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2 | #define SCIQLOP_COLORUTILS_H | |
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3 | ||
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4 | #include <vector> | |
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5 | ||
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6 | class QColor; | |
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7 | ||
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8 | /** | |
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9 | * Utility class with methods for colors | |
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10 | */ | |
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11 | struct ColorUtils { | |
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12 | /// Generates a color scale from min / max values and a number of colors. | |
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13 | /// The algorithm uses the HSV color model to generate color variations (see | |
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14 | /// http://doc.qt.io/qt-4.8/qcolor.html#the-hsv-color-model) | |
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15 | static std::vector<QColor> colors(const QColor &minColor, const QColor &maxColor, | |
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16 | int nbColors) noexcept; | |
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17 | }; | |
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18 | ||
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19 | #endif // SCIQLOP_COLORUTILS_H | |
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1 | #include "Common/ColorUtils.h" | |
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2 | ||
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3 | #include <QtGui/QColor> | |
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4 | ||
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5 | std::vector<QColor> ColorUtils::colors(const QColor &minColor, const QColor &maxColor, | |
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6 | int nbColors) noexcept | |
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7 | { | |
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8 | auto result = std::vector<QColor>{}; | |
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9 | ||
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10 | if (nbColors == 1) { | |
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11 | result.push_back(minColor); | |
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12 | } | |
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13 | else if (nbColors > 0) { | |
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14 | const auto nbSteps = static_cast<double>(nbColors - 1); | |
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15 | ||
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16 | const auto colorHStep = (maxColor.hue() - minColor.hue()) / nbSteps; | |
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17 | const auto colorSStep = (maxColor.saturation() - minColor.saturation()) / nbSteps; | |
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18 | const auto colorVStep = (maxColor.value() - minColor.value()) / nbSteps; | |
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19 | const auto colorAStep = (maxColor.alpha() - minColor.alpha()) / nbSteps; | |
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20 | ||
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21 | for (auto i = 0; i < nbColors; ++i) { | |
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22 | result.push_back(QColor::fromHsv( | |
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23 | minColor.hue() + i * colorHStep, minColor.saturation() + i * colorSStep, | |
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24 | minColor.value() + i * colorVStep, minColor.alpha() + i * colorAStep)); | |
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25 | } | |
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26 | } | |
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27 | ||
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28 | return result; | |
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29 | } | |
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1 | 1 | #include "Visualization/VisualizationGraphHelper.h" |
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2 | 2 | #include "Visualization/qcustomplot.h" |
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3 | 3 | |
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4 | #include <Common/ColorUtils.h> | |
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5 | ||
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4 | 6 | #include <Data/ScalarSeries.h> |
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5 | 7 | #include <Data/VectorSeries.h> |
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6 | 8 | |
| @@ -84,9 +86,12 struct PlottablesCreator<T, | |||
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84 | 86 | // Gets the number of components of the data series |
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85 | 87 | auto componentCount = dataSeries.valuesData()->componentCount(); |
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86 | 88 | |
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89 | auto colors = ColorUtils::colors(Qt::blue, Qt::red, componentCount); | |
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90 | ||
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87 | 91 | // For each component of the data series, creates a QCPGraph to add to the plot |
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88 | 92 | for (auto i = 0; i < componentCount; ++i) { |
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89 | 93 | auto graph = plot.addGraph(); |
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94 | graph->setPen(QPen{colors.at(i)}); | |
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90 | 95 | |
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91 | 96 | result.insert({i, graph}); |
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92 | 97 | } |
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