Re: [pygame] "Making Games with Python & Pygame" free book

[James Paige <Bob@xxxxxxxxxxxxxxxxxxx>]

Red-Green-Blue is for additive color (light)

Red-Blue-Yellow and Cyan-Magenta-Yellow are for subtractive color 
(paint, ink, etc)

On Mon, Mar 19, 2012 at 06:15:15PM +0100, Nick Arnoeyts wrote:
>    You're probably talking about something else, but isn't it supposed to be
>    Red-Green-Blue and not Red-Blue-Yellow?
> 
>    Op 19 maart 2012 17:10 schreef Ian Mallett <geometrian@xxxxxxxxx> het
>    volgende:
> 
>      On Mon, Mar 19, 2012 at 9:49 AM, Russell Jones <russell.jones@xxxxxxxxx>
>      wrote:
> 
>        Great news :) I liked IYOCGwP and have mentioned it here before now.
>        BTW, on page 34 of the new book you write "(Red, blue, and yellow are
>        the primary colors for paints and pigments, but the computer monitor
>        uses light, not paint.)"
>        The primary colours for pigment and paint are cyan, yellow and
>        magenta, no?
>        Russell
> 
>      There is a "color space" that defines all possible colors.  "Primary
>      colors" are the colors we choose as basis vectors.  Both red-blue-yellow
>      and cyan-magenta-yellow are valid basis vectors; the former more often
>      used in painting, the latter more often used in printing.
>      Ian