d
38 lines
1.0 KiB
Lua
38 lines
1.0 KiB
Lua
function drawPixel(x, y, bg, fg)
|
|
-- get original character for "merging"
|
|
local char = gpu.get(x, y)[0]
|
|
if bg ~= nil then gpu.setBackground(bg) end
|
|
if fg ~= nil then gpu.setForeground(fg) end
|
|
-- convert from braille to char code
|
|
-- convert from
|
|
-- 1 4 1 2
|
|
-- 2 5 -> 3 4
|
|
-- 3 6 5 6
|
|
-- 7 8 7 8 using complicate bit thingery
|
|
-- example would be 171 should be converted to 157
|
|
-- or a more simple one: 16 to 4
|
|
-- bitwise or
|
|
-- unconvert
|
|
-- print the thing
|
|
char = string.byte(char)
|
|
ocelot.log(char)
|
|
char = formByte({getBit(char, 0), getBit(char, 2), getBit(char, 4), getBit(char, 1), getBit(char, 3), getBit(char, 5), getBit(char, 6), getBit(char, 7)})
|
|
ocelot.log(char)
|
|
end
|
|
|
|
function XY2Braille(x, y)
|
|
return math.floor(x/2), math.floor(y/4)
|
|
end
|
|
function Braille2XY(x, y)
|
|
return math.floor(x*2), math.floor(y*4)
|
|
end
|
|
function getBit(a, which)
|
|
return 1 == ((a >> which) & 1);
|
|
end
|
|
function formByte(a)
|
|
local x = 0
|
|
for i = 1, 8 do
|
|
x = x+(a[i]<<i)
|
|
end
|
|
return x
|
|
end |