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Creates DataSeriesUtils file that will contain methods for handling data holes...
Creates DataSeriesUtils file that will contain methods for handling data holes Renames DataSeriesUtils file in unit tests to avoid conflicts

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ColorUtils.cpp
29 lines | 1.0 KiB | text/x-c | CppLexer
#include "Common/ColorUtils.h"
#include <QtGui/QColor>
std::vector<QColor> ColorUtils::colors(const QColor &minColor, const QColor &maxColor,
int nbColors) noexcept
{
auto result = std::vector<QColor>{};
if (nbColors == 1) {
result.push_back(minColor);
}
else if (nbColors > 0) {
const auto nbSteps = static_cast<double>(nbColors - 1);
const auto colorHStep = (maxColor.hue() - minColor.hue()) / nbSteps;
const auto colorSStep = (maxColor.saturation() - minColor.saturation()) / nbSteps;
const auto colorVStep = (maxColor.value() - minColor.value()) / nbSteps;
const auto colorAStep = (maxColor.alpha() - minColor.alpha()) / nbSteps;
for (auto i = 0; i < nbColors; ++i) {
result.push_back(QColor::fromHsv(
minColor.hue() + i * colorHStep, minColor.saturation() + i * colorSStep,
minColor.value() + i * colorVStep, minColor.alpha() + i * colorAStep));
}
}
return result;
}