Jmaa/palette-swap
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Fixed bad behaviour in init

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This commit is contained in:
Jon Michael Aanes 2023-02-16 21:59:30 +01:00
parent 0e8a501049
commit 0a64b6e966
1 changed files with 14 additions and 8 deletions
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22
init.lua
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@ -117,15 +117,21 @@ function palette_swap.color_map.invert (r,g,b)
return 1 - r, 1 - g, 1 - b return 1 - r, 1 - g, 1 - b
end end
function palette_swap.color_map.switch_channel (mode) local CHANNEL_ORDERS = {
local channels = {'r', 'g', 'b'} [0] = {'r', 'g', 'b'},
local channel_order = {} [1] = {'g', 'b', 'r'},
for i = 1, #channels do [2] = {'b', 'r', 'g'},
local index = (mode % #channels) + 1 [3] = {'r', 'b', 'g'},
mode = mode / #channels [4] = {'b', 'g', 'r'},
channel_order[#channel_order+1] = table.remove(channels,index) [5] = {'g', 'r', 'b'},
end [6] = {'b', 'g', 'r'},
[7] = {'b', 'g', 'r'}, -- TODO
[8] = {'b', 'g', 'r'}, -- TODO
[9] = {'r', 'g', 'b'}, -- TODO
}
function palette_swap.color_map.switch_channel (mode)
local channel_order = CHANNEL_ORDERS[mode]
local func_s = ("return function (r, g, b) return %s, %s, %s end"):format(unpack(channel_order)) local func_s = ("return function (r, g, b) return %s, %s, %s end"):format(unpack(channel_order))
return loadstring (func_s)() return loadstring (func_s)()
end end