Converting an Image per-pixel to a Map

ID:1571134
 
May 10 2014, 6:48 pm
(See the best response by Nadrew.)
Problem description:
I've got a four-colour image that I'm trying to go over pixel-by-pixel and convert each pixel, based on colour, into a turf assignment. I already have the turfs defined, with icons - I just need to somehow loop over the pixels(not sure if there's a way to do this in DM.. or if DM could handle it. Might just use PIL for this part), and create the .dmm. Unfortunately, I'm having no luck.. I honestly don't even know where to begin with this.

Extra:
Could one could implement an 8-colour heightmap/topology using overlaying turfs in the same manner?
May 10 2014, 7:40 pm
Best response
 
mob/verb/GetColors()
    var/icon/I = icon('myicon.dmi',"myicon_state")
    var
        icon_width = I.Width()
        icon_height = I.Height()
    for(var/pixel_x=1,pixel_x++,pixel_x<=icon_width)
        for(var/pixel_y=1,pixel_y++,pixel_y<=icon_height)
            var/pixel_color = I.GetPixel(pixel_x,pixel_y)
            src << "The pixel at [pixel_x],[pixel_y] is [pixel_color]"


That should get ya on the right path.
May 11 2014, 5:28 am
Sweet! Thank you!