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#include "ColorUtils.h"
#include "../Logging/Logging.h"
using namespace SyntopiaCore::Math;
using namespace SyntopiaCore::Logging;
namespace SyntopiaCore {
namespace Misc {
SyntopiaCore::Math::Vector3f ColorUtils::HSVtoRGB(SyntopiaCore::Math::Vector3f hsv) {
/// Implementation based on: http://en.wikipedia.org/wiki/HSV_color_space
if (hsv[0] >= 360) hsv[0]-=360;
int Hi = (int)(hsv[0] / 60) % 6;
double f = (hsv[0] / 60) - Hi;
double p = hsv[2]*(1-hsv[1]);
double q = hsv[2]*(1-f*hsv[1]);
double t = hsv[2]*(1-(1-f)*hsv[1]);
if (Hi == 0) return Vector3f(hsv[2],t,p);
if (Hi == 1) return Vector3f(q,hsv[2],p);
if (Hi == 2) return Vector3f(p,hsv[2],t);
if (Hi == 3) return Vector3f(p,q,hsv[2]);
if (Hi == 4) return Vector3f(t,p,hsv[2]);
if (Hi == 5) return Vector3f(hsv[2],p,q);
WARNING("ColorUtils::HSVtoRGB failed");
return Vector3f(0,0,0);
}
}
}
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