[gameprogrammer] Re: Red/Blue 3d Glasses

Wow interesting Juan, thanks! (:

On 5/11/07, Juan Ignacio Albanesi <jalbanesi@xxxxxxxxx> wrote:


> when drawing on a black background, red and blue (pure colors) were
> needed for the 3d glasses to work.
>
> when drawing on a white background, cyan and red were needed.
>
>


on black background (0,0,0) you use the RGB color model
on white background (1,1,1) you use the CMY (Cyan, Magenta and yellow) color
model

RGB = 1 - CMY
so:
0 + R = 1 - C
0 + G = 1 - M
0 + B = 1 - Y

example:
R = 1, G = 0, B = 0 in black background, how to represent in white
background?

0 + 1 = 1 - C  =>  C = 0
0 + 0 = 1 - M =>  M = 1
0 + 0 = 1 - Y  =>  Y = 1

RGB is the model used by CRT monitors and CMY is used by ink jet printers
(the paper is generally white)

more info:
http://en.wikipedia.org/wiki/CMYK_color_model
http://en.wikipedia.org/wiki/RGB

regards

PS: Sorry for my bad english, is not my native languaje





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