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Algorithm to convert RGB to HSV and HSV to RGB?

某人在价值0至255时,可解释如何将特别志愿人员的价值转换为特别小组? 此外,

例如,我试图在C++中这样做。

Answer 1

Found it here http://mjijackson.com/2008/02/rgb-to-hsl-and-rgb-to-hsv-color-model-conversion-algorithms-in-javascript

function hsvToRgb(h, s, v){
    var r, g, b;

    var i = Math.floor(h * 6);
    var f = h * 6 - i;
    var p = v * (1 - s);
    var q = v * (1 - f * s);
    var t = v * (1 - (1 - f) * s);

    switch(i % 6){
        case 0: r = v, g = t, b = p; break;
        case 1: r = q, g = v, b = p; break;
        case 2: r = p, g = v, b = t; break;
        case 3: r = p, g = q, b = v; break;
        case 4: r = t, g = p, b = v; break;
        case 5: r = v, g = p, b = q; break;
    }

    return [r * 255, g * 255, b * 255];
}

Edit:

我曾经写过一张彩色皮,用来理解所有这些。之后,我看看看光机,试图绕过头发走,观察头盔/机数的变化,并看看他们如何工作。在本案中,i 似乎在上查找<>m> >,届时主要肤色,即: 湿度的价值实际上在循环中达到完全饱和的彩色,从红色开始。每一点代表R、G和B,0级,R和G之间,R黄色,R和B之间,Magenta和B与G之间, c。我们总共有6个肤色。这6个颜色从0到5个。

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