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This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters. Learn more about bidirectional Unicode charactersOriginal file line number Diff line number Diff line change @@ -4,7 +4,7 @@ // but I can't make any promises about the quality of the algorithm's estimates above 40000 K.) function colorTemperatureToRGB(kelvin){ var temp = kelvin / 100; -
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This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters. Learn more about bidirectional Unicode charactersOriginal file line number Diff line number Diff line change @@ -0,0 +1,61 @@ // From http://www.tannerhelland.com/4435/convert-temperature-rgb-algorithm-code/ // Start with a temperature, in Kelvin, somewhere between 1000 and 40000. (Other values may work, // but I can't make any promises about the quality of the algorithm's estimates above 40000 K.) var tempToRGB = function(kelvin){ var temp = kelvin / 100; var red, green, blue; if( temp <= 66 ){ red = 255; green = temp; green = 99.4708025861 * Math.log(green) - 161.1195681661; if( temp <= 19){ blue = 0; } else { blue = temp-10; blue = 138.5177312231 * Math.log(blue) - 305.0447927307; } } else { red = temp - 60; red = 329.698727446 * Math.pow(red, -0.1332047592); green = temp - 60; green = 288.1221695283 * Math.pow(green, -0.0755148492 ); blue = 255; } return { r : clamp(red, 0, 255), g : clamp(green, 0, 255), b : clamp(blue, 0, 255) } } function clamp( x, min, max ) { if(x<min){ return min; } if(x>max){ return max; } return x; }