get rgb value of a color?

Comments

• MoKaLux Member

  October 2021 edited October 2021

  sorry I found it (thanks Rrraptor)

  local function hex2rgb(hex) local r = (hex >> 16) / 255 local g = (hex >> 8 & 0xff) / 255 local b = (hex & 0xff) / 255 return r,g,b end

  Peace!

  my growING GIDEROS github repositories: https://github.com/mokalux?tab=repositories

  +1 -1Share on Facebook
• SinisterSoft Maintainer

  October 2021 Accepted Answer

  If there is an alpha then you will also want to AND the r with 0xff too (like the g).

  Likes: MoKaLux

  Coder, video game industry veteran (since the '80s, ❤'s assembler), arrested - never convicted hacker (in the '90s), dad of five, he/him (if that even matters!).
  https://deluxepixel.com

  +1 -1 (+1 / -0 )Share on Facebook
• hgy29 Maintainer

  October 2021 Accepted Answer

  SinisterSoft said:

  If there is an alpha then you will also want to AND the r with 0xff too (like the g).

  But if there is an alpha remember that lua ints are not always 32 bit (depending on the platform), so alpha may be corrupt anyway. But you can use int64 if required.
  

  Likes: SinisterSoft, MoKaLux

  +1 -1 (+2 / -0 )Share on Facebook
• rrraptor Member

  October 2021 edited October 2021

  
  Or you can use ImGui
  https://github.com/MultiPain/Gideros_ImGui#color-convert

  Likes: SinisterSoft

  SuperShape | Nice blured shapes with shadows | Simple button pad | Simple layer class | Simple UI library | 2D camera lib | Color picker | FPS graph | Dear ImGui | cute_c2

  +1 -1 (+1 / -0 )Share on Facebook
• SinisterSoft Maintainer

  October 2021 edited October 2021

  @hgy29 Yes, I meant if he just needed the red, it will be corrupted if there is an alpha, so he should mask it off.
  

  Coder, video game industry veteran (since the '80s, ❤'s assembler), arrested - never convicted hacker (in the '90s), dad of five, he/him (if that even matters!).
  https://deluxepixel.com

  +1 -1Share on Facebook