Did you know…
You can extract the alpha, red, blue, and green channels of a hexadecimal color with simple bit shift and logical AND operations? Below are the operations to extract these channels from RGB and ARGB color formats.
RGB Channel Extraction - 24 bits
// 24 bit color
var color : uint = 0xff0000;
var R : Number = color >> 16;
var G : Number = ( color >> 8 ) & 0xff;
var B : Number = color & 0xff;
ARBG Channel Extraction - 32 bits
// 32 bit color with alpha channel
var color : uint = 0xffc7c8c9;
var A : Number = ( color >> 24 ) & 0xff;
var R : Number = ( color >> 16 ) & 0xff;
var G : Number = ( color >> 8 ) & 0xff;
var B : Number = color & 0xff;
This entry was posted
on Saturday, January 17th, 2009 at 2:41 pm and is filed under Flex, QueueTip.
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