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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,52 +1,37 @@ | ||
| export const rgbToHsl = (r: number, g: number, b: number) => { | ||
| var min, | ||
| max, | ||
| i, | ||
| l, | ||
| s, | ||
| maxcolor, | ||
| h, | ||
| rgb = []; | ||
| rgb[0] = r / 255; | ||
| rgb[1] = g / 255; | ||
| rgb[2] = b / 255; | ||
| min = rgb[0]; | ||
| max = rgb[0]; | ||
| maxcolor = 0; | ||
| for (i = 0; i < rgb.length - 1; i++) { | ||
| if (rgb[i + 1] <= min) { | ||
| min = rgb[i + 1]; | ||
| } | ||
| if (rgb[i + 1] >= max) { | ||
| max = rgb[i + 1]; | ||
| maxcolor = i + 1; | ||
| } | ||
| } | ||
| if (maxcolor == 0) { | ||
| h = (rgb[1] - rgb[2]) / (max - min); | ||
| } | ||
| if (maxcolor == 1) { | ||
| h = 2 + (rgb[2] - rgb[0]) / (max - min); | ||
| } | ||
| if (maxcolor == 2) { | ||
| h = 4 + (rgb[0] - rgb[1]) / (max - min); | ||
| } | ||
| if (isNaN(h)) { | ||
| h = 0; | ||
| } | ||
| h = h * 60; | ||
| if (h < 0) { | ||
| h = h + 360; | ||
| } | ||
| l = (min + max) / 2; | ||
| if (min == max) { | ||
| s = 0; | ||
| } else { | ||
| if (l < 0.5) { | ||
| s = (max - min) / (max + min); | ||
| } else { | ||
| s = (max - min) / (2 - max - min); | ||
| let h = 0; | ||
| let s = 0; | ||
|
|
||
| const rgb: [number, number, number] = [r / 255, g / 255, b / 255]; | ||
|
|
||
| const min = Math.min(...rgb); | ||
| const max = Math.max(...rgb); | ||
|
|
||
| const l = (min + max) / 2; | ||
|
|
||
| if (min !== max) { | ||
| const delta = max - min; | ||
|
|
||
| s = l > 0.5 ? delta / (2 - max - min) : delta / (max + min); | ||
|
|
||
| switch (max) { | ||
| case rgb[0]: | ||
| h = (rgb[1] - rgb[2]) / delta + (rgb[1] < rgb[2] ? 6 : 0); | ||
| break; | ||
| case rgb[1]: | ||
| h = (rgb[2] - rgb[0]) / delta + 2; | ||
| break; | ||
| case rgb[2]: | ||
| h = (rgb[0] - rgb[1]) / delta + 4; | ||
| break; | ||
| } | ||
|
|
||
| h *= 60; | ||
| } | ||
| return { h: h.toFixed(2), s: (s * 100).toFixed(2), l: (l * 100).toFixed(2) }; | ||
|
|
||
| return { | ||
| h: h.toFixed(2), | ||
| s: (s * 100).toFixed(2), | ||
| l: (l * 100).toFixed(2), | ||
| }; | ||
| }; |