I have a file where colors were stored as decimal integers
To get the r, g, b I divide the integer by 1, 256, or 65536 then take the low byte by bitwise and-ing with &hFF
r = bitwiseand( thecol , 255)
g = bitwiseand(thecol / 256,255)
b = bitwiseand(thecol/65536,255)
Is there an equivalent in Lua?
eg from a decimal value that is &h13F be able to get the decimal equivalent of the 3F part?
…fwiw, not that there’s anything wrong with the bit plugin, but for pow-of-2 masks modulo can substitute, fe:
r = math.floor(rgb/65536) – assumes uppermost alpha byte is zero, else apply modulo here also
g = math.floor(rgb/256) % 256
b = rgb % 256
…fwiw, not that there’s anything wrong with the bit plugin, but for pow-of-2 masks modulo can substitute, fe:
r = math.floor(rgb/65536) – assumes uppermost alpha byte is zero, else apply modulo here also
g = math.floor(rgb/256) % 256
b = rgb % 256