img/grayscale: add comment - randomcrap - random crap programs of varying quality
  HTML git clone git://git.codemadness.org/randomcrap
   DIR Log
   DIR Files
   DIR Refs
   DIR README
   DIR LICENSE
       ---
   DIR commit 6a350a05ef600ca7d861164032ca0ef8363174f3
   DIR parent ba4fda7f76f8c81b9f76fc7b8625c6b77540b6b2
  HTML Author: Hiltjo Posthuma <hiltjo@codemadness.org>
       Date:   Wed, 12 Feb 2025 20:07:49 +0100
       
       img/grayscale: add comment
       
       Diffstat:
         M img/grayscale/main.go               |       2 ++
       
       1 file changed, 2 insertions(+), 0 deletions(-)
       ---
   DIR diff --git a/img/grayscale/main.go b/img/grayscale/main.go
       @@ -45,6 +45,8 @@ func main() {
                                c := img.At(x, y)
                                r, g, b, _ := c.RGBA()
        
       +                        // NOTE: linear conversion, a fancier way could be:
       +                        // v = 0.2126 * r + 0.7152 * g + 0.0722 * b;
                                avg := float64(r+g+b) / 3.0
                                avg /= 257.0
                                avg = round(avg)