Function toRgb

Software/math/PrismatikMath.cpp:242–277

    }

    StructRgb toRgb(const StructXyz &xyz) {
        double x = xyz.x / 100;        //X from 0 to  95.047      (Observer = 2°, Illuminant = D65)
        double y = xyz.y / 100;        //Y from 0 to 100.000
        double z = xyz.z / 100;        //Z from 0 to 108.883

        double r = x *  3.2406 + y * -1.5372 + z * -0.4986;
        double g = x * -0.9689 + y *  1.8758 + z *  0.0415;
        double b = x *  0.0557 + y * -0.2040 + z *  1.0570;

        if ( r > 0.0031308 )
            r = 1.055 * pow(r, (1 / 2.4)) - 0.055;
        else
            r = 12.92 * r;

        if ( g > 0.0031308 )
            g = 1.055 * pow(g, (1 / 2.4)) - 0.055;
        else
            g = 12.92 * g;

        if ( b > 0.0031308 )
            b = 1.055 * pow(b, (1 / 2.4)) - 0.055;
        else
            b = 12.92 * b;

        r = withinRange<double, double>(r, 0, 1);
        g = withinRange<double, double>(g, 0, 1);
        b = withinRange<double, double>(b, 0, 1);

        StructRgb eRgb;

        eRgb.r = round(r*4095);
        eRgb.g = round(g*4095);
        eRgb.b = round(b*4095);

        return eRgb;
    }

    StructRgb toRgb(const StructLab &lab) {
        return toRgb(toXyz(lab));