How to 'invert' an image? Blend mode amusements.

Aniket

I have an image which is mostly transparent with a bit of white on it, I'd like to make it transparent where it was white and white where it was transparent. How can I do that ?

I really don't get blend modes.

ar2rsawseen

How about this:

local media = Media.new(e.path) for i = 1, media:getWidth() do for j = 1, media:getHeight() do local r, g, b, a = media:getPixel(i, j) if a == 0 then --transparent media:setPixel(i, j, 255, 255, 255, 1) elseif r == 255 and g == 255 and b == 255 then media:setPixel(i, j, 255, 255, 255, 0) end end end