diff options
Diffstat (limited to 'autoutils/colorconversion.go')
| -rw-r--r-- | autoutils/colorconversion.go | 65 |
1 files changed, 33 insertions, 32 deletions
diff --git a/autoutils/colorconversion.go b/autoutils/colorconversion.go index af21668..6128e39 100644 --- a/autoutils/colorconversion.go +++ b/autoutils/colorconversion.go @@ -18,40 +18,41 @@ along with AutoArt. If not, see <https://www.gnu.org/licenses/>. */ package autoutils + import ( - "math" + "math" ) func HSVToRGB(h uint8, s uint8, v uint8) (uint8, uint8, uint8) { - // https://en.wikipedia.org/wiki/HSL_and_HSV#HSV_to_RGB - V := float64(v) / 256 - S := float64(s) / 256 - C := V * S - H := float64(h) / (256/6) - X := float64(C) * (1 - math.Abs(math.Mod(H, 2) - 1)) - var r, g, b float64 - switch true { - case s == 0: - r, g, b = 0, 0, 0 - case H <= 1: - r, g, b = C, X, 0 - case H <= 2: - r, g, b = X, C, 0 - case H <= 3: - r, g, b = 0, C, X - case H <= 4: - r, g, b = 0, X, C - case H <= 5: - r, g, b = X, 0, C - default: - r, g, b = C, 0, X - } - m := V - C - r += m - g += m - b += m - r *= 255 - g *= 255 - b *= 255 - return uint8(r), uint8(g), uint8(b) + // https://en.wikipedia.org/wiki/HSL_and_HSV#HSV_to_RGB + V := float64(v) / 256 + S := float64(s) / 256 + C := V * S + H := float64(h) / (256 / 6) + X := float64(C) * (1 - math.Abs(math.Mod(H, 2)-1)) + var r, g, b float64 + switch true { + case s == 0: + r, g, b = 0, 0, 0 + case H <= 1: + r, g, b = C, X, 0 + case H <= 2: + r, g, b = X, C, 0 + case H <= 3: + r, g, b = 0, C, X + case H <= 4: + r, g, b = 0, X, C + case H <= 5: + r, g, b = X, 0, C + default: + r, g, b = C, 0, X + } + m := V - C + r += m + g += m + b += m + r *= 255 + g *= 255 + b *= 255 + return uint8(r), uint8(g), uint8(b) } |