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// Begin License:
// Copyright (C) 2006-2014 Tobias Sargeant (tobias.sargeant@gmail.com).
// All rights reserved.
//
// This file is part of the Carve CSG Library (http://carve-csg.com/)
//
// This file may be used under the terms of either the GNU General
// Public License version 2 or 3 (at your option) as published by the
// Free Software Foundation and appearing in the files LICENSE.GPL2
// and LICENSE.GPL3 included in the packaging of this file.
//
// This file is provided "AS IS" with NO WARRANTY OF ANY KIND,
// INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE.
// End:
#pragma once
#include <carve/carve.hpp>
#include <carve/geom.hpp>
namespace carve {
namespace colour {
static inline void HSV2RGB(float H, float S, float V, float &r, float &g, float &b) {
H = 6.0f * H;
if (S < 5.0e-6) {
r = g = b = V; return;
} else {
int i = (int)H;
float f = H - i;
float p1 = V * (1.0f - S);
float p2 = V * (1.0f - S * f);
float p3 = V * (1.0f - S * (1.0f - f));
switch (i) {
case 0: r = V; g = p3; b = p1; return;
case 1: r = p2; g = V; b = p1; return;
case 2: r = p1; g = V; b = p3; return;
case 3: r = p1; g = p2; b = V; return;
case 4: r = p3; g = p1; b = V; return;
case 5: r = V; g = p1; b = p2; return;
}
}
r = g = b = 0.0;
}
}
}
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