Hello all! I'm looking for a function to convert a...

# compose

[gpaligot]

Hello all! I'm looking for a function to convert a rgb Color to a HSL representation but I can only find a HSL to RGB function in the Color class. Someone can confirm me that the RGB to HSL function doesn't exist?

[Zach Klippenstein (he/him) [MOD]]

I think something like this should do it:
val (h, s, l) = color.convertTo(ColorSpaces.HSL)

[Zach Klippenstein (he/him) [MOD]]

The component/rgb accessors on Color are really just whatever components the color space defines. They’re just called “rgb” because it’s the most common, presumably

[romainguy]

HSL is not a color space, so you won’t find it in ColorSpaces

[romainguy]

(it’s a color model)

[gpaligot]

I hoped so much when I read your message Zach but yes, HSL isn't in ColorSpaces. In french, we call this an emotional elevator. Don't know if this expression is valid in English. ^^

[romainguy]

And there’s no toHsl() but if you are ok with HSV instead of HSL you can use android.graphics.Color

[romainguy]

Oh wait 1 sec

[romainguy]

I just remembered there’s something in androidx.core.graphics

[romainguy]

https://developer.android.com/reference/androidx/core/graphics/ColorUtils#RGBToHSL(int,%20int,%20int,%20float[])

[romainguy]

and https://developer.android.com/reference/androidx/core/graphics/ColorUtils#colorToHSL(int,%20float[])

[gpaligot]

Oh super cool! Thanks Romain!

[Zach Klippenstein (he/him) [MOD]]

My bad, i could have sworn i saw hsl in the list but clearly was thinking of something else

[romainguy]

@Zach Klippenstein (he/him) [MOD] I’ll give you a course on color management and bore you to death :))

[Zach Klippenstein (he/him) [MOD]]

sounds pretty great actually 😛