Do you mean the conversion of binary to decimal? >From RIGHT to LEFT, each binary digit (bit) ON position represents a power of 2, starting with 0. And bits are generally represented in bytes - eight bits each. Thus a byte's max value is 255 - all bits ON.
A dark blue, 0,0,0,51 (alpha,red,green,blue channels)is 00000000,00000000,00000000,00110011 in bits. The 00110011 represents (from RIGHT to LEFT, remember) (1 * 2^0) + (1 * 2^1) + (1 * 2^4) + (1 * 2^5) = 51 Or to cut out all the bit nonsense. 32 bit number = blue + (green * 256) + (red * 65536) + (alpha * 16777216) -----Original Message----- From: Rick Root [mailto:[EMAIL PROTECTED] Sent: Tuesday, December 12, 2006 2:40 PM To: CF-Talk Subject: Struggling with math! I've been trying to do a freakin' blur all day long and i'm having some trouble with math conversions. Java stores RGB values in an image as a 32 bit integer, containing the alpha, red, green, and blue values in each 8 bits. In my world, the alpha is always non-transparent, ie 255... For example... 255,255,0,0 = a red pixel 255,255,255,0 = a yellow pixel 255,0,0,255 = a white pixel. The problem is I'm having trouble grasping conversion between 4 sets of 8 bit numbers and a 32 bit number. I know it involves bit shifting and stuff like that but .. I'm just not getting it. Could someone explain it to me like I'm a 6 year old? (apologiez to Denzel Washington for that) Rick ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~| Create robust enterprise, web RIAs. Upgrade & integrate Adobe Coldfusion MX7 with Flex 2 http://ad.doubleclick.net/clk;56760587;14748456;a?http://www.adobe.com/products/coldfusion/flex2/?sdid=LVNU Archive: http://www.houseoffusion.com/groups/CF-Talk/message.cfm/messageid:263831 Subscription: http://www.houseoffusion.com/groups/CF-Talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/cf_lists/unsubscribe.cfm?user=89.70.4
