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var hsv2rgb = function(hsv) { | |
var h = hsv.hue, s = hsv.sat, v = hsv.val; | |
var rgb, i, data = []; | |
if (s === 0) { | |
rgb = [v,v,v]; | |
} else { | |
h = h / 60; | |
i = Math.floor(h); | |
data = [v*(1-s), v*(1-s*(h-i)), v*(1-s*(1-(h-i)))]; | |
switch(i) { | |
case 0: | |
rgb = [v, data[2], data[0]]; | |
break; | |
case 1: | |
rgb = [data[1], v, data[0]]; | |
break; | |
case 2: | |
rgb = [data[0], v, data[2]]; | |
break; | |
case 3: | |
rgb = [data[0], data[1], v]; | |
break; | |
case 4: | |
rgb = [data[2], data[0], v]; | |
break; | |
default: | |
rgb = [v, data[0], data[1]]; | |
break; | |
} | |
} | |
return '#' + rgb.map(function(x){ | |
return ("0" + Math.round(x*255).toString(16)).slice(-2); | |
}).join(''); | |
}; |
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Copyright (c) 2012, Matthew Schinckel. | |
All rights reserved. | |
Based on an algorithm at http://jsres.blogspot.com.au/2008/01/convert-hsv-to-rgb-equivalent.html | |
Redistribution and use in source and binary forms, with or without | |
modification, are permitted provided that the following conditions are met: | |
* Redistributions of source code must retain the above copyright | |
notice, this list of conditions and the following disclaimer. | |
* Redistributions in binary form must reproduce the above copyright | |
notice, this list of conditions and the following disclaimer in the | |
documentation and/or other materials provided with the distribution. | |
* The names of its contributors may not be used to endorse or promote products | |
derived from this software without specific prior written permission. | |
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND | |
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED | |
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
DISCLAIMED. IN NO EVENT SHALL MATTHEW SCHINCKEL BE LIABLE FOR ANY DIRECT, | |
INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, | |
BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE | |
OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF | |
ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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