bitExtract

Client-side

Server-side

Shared

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This function returns the unsigned number formed by the bits field to field + width - 1 (range: 0-31).

uint bitExtract ( uint var, int field, [ int width = 1 ] )

NOTE: When using optional arguments, you might need to supply all arguments before the one you wish to use.

Returns the extracted value/bit sequence.

shared

function getColorAlpha(color)
   return bitExtract(color,24,8) -- return bits 24-32 ( the alpha, http://en.wikipedia.org/wiki/RGBA_color_space )
end