##// END OF EJS Templates
Updates model after an event has been created through the colored zone
Updates model after an event has been created through the colored zone

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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;
}