UnMult的なスクリプト

unmult.anm

obj.pixeloption("type", "rgb")

local w, h = obj.getpixel()

local inf = 1 / 0

for y = 0, h - 1 do
    for x = 0, w - 1 do
        local r, g, b, a = obj.getpixel(x, y)
        if a < 255 then
            r = (r * a) / 256
            g = (g * a) / 256
            b = (b * a) / 256
        end

        local rate = 255 / math.max(math.max(r, g), b)
        if rate ~= inf then
            local tr = r * rate
            local tg = g * rate
            local tb = b * rate
            if tb > 0 then
                a = (b * 256) / tb
            elseif tg > 0 then
                a = (g * 256) / tg
            elseif tr > 0 then
                a = (r * 256) / tr
            else
                a = 0
            end

            obj.putpixel(x, y, math.min(tr, 255), math.min(tg, 255), math.min(tb, 255), math.min(a, 255))
        else
            obj.putpixel(x, y, 0, 0, 0, 0)
        end
    end
end

使い方

• αを付けたいオブジェクトにアニメーション効果で乗せるだけ
• パラメータはなし