Re: Tesselating complex figures with Render

Around 21 o'clock on May 12, [email protected] wrote:

> That could work.  I assume that you mean to convert from RGB to CIE's
> XYZ, then add the Y components.  How do you intend to combine the X and
> Z components?  One simple approach is to compute x and y values then
> interpolate with a alpha weighting.  In theory this should work.  Then
> you reconvert back to X and Z, and then back to RGB.

I wasn't planning on doing any colorspace conversion, just leaving the 
operands in RGB space and using that.  Given that RGB<->XYZ is a linear 
transformation, additive results in one space are equivalent to additive 
results in the other.

Keith Packard        XFree86 Core Team        HP Cambridge Research Lab