Posted by Onideus Mad Hatter on 01/16/07 23:49

On Wed, 17 Jan 2007 10:39:21 +1100, "Jeckyl" <noone@nowhere.com>
wrote:

>> The formula you gave before:
>> var rgb : String = "0x" + ((r*256+g)*256+b).toString(16);
>>
>> Ahhh, I see where you failed, you forgot to mention that you needed to
>> ADD the blue. So the formula should ACTUALLY be:
>> (r * 65536)+(g * 256)+b
>
>It was already correct .. I didn't fail to mention it .. you failed to read
>it .. see your own quote from me above.

Actually you just have a horrible time explaining yourself and you
make a lot of ASSumptions on the part of what your reader is seeing.
I pray to the sweet baby Jesus that you don't ever inflict your
horrible handicap onto the world by attempting to write a text book or
teach a class on...well anything really.

>>> to convert 8-bit unsigned (0..255) R,G, and B values to an RGB value
>>> you need to shift the red 16 bits and the green 8 bits to the left
>> ...but what you don't say is WHY.

>OK .. looks like its back to the very basics. I hope I don't need to go
>back to explain binary numbers, bits, and bytes.
>
>A color specifed as an RGB value needs 8 bits (1 byte) for each of the R, G
>and B values (which are in the range 0 .. 255 inclusive). These are usually
>stored as consecutive bytes, usually in blue, green, red order. You can
>also treat those three lots of 8 bits as a single 24-bit number. The
>formula given converts the three individual 8-bit values into a single
>24-bit value.
>
>I hope that explains it.

So it is just meaningless (as far as the color representation)
mathematical conversion to compress the image? LOL, and here I
thought it was something more complex like the conversion of RGB to
HSL.

--

Onideus Mad Hatter
mhm ¹ x ¹
http://www.backwater-productions.net
http://www.backwater-productions.net/hatter-blog


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