In article <elOfON+7XaP2yN5=Ux51qWrwPoaQ@4ax.com>, Peter Popov 
<pet### [at] usanet> wrote:

> In your code I don't see any limit on the direction the sample rays
> are shot. I think it would be useful if one could specify a maximum
> angle that the sample rays can form with the plane tangent to the
> evaluated point. The minimum should of course be 0 because for all
> angles below that the sample rays will hit the surface infinitesimally
> close to the evaluated point. And the maximum angle is needed to save
> the overhead of taking samples straight up when the greatest slope on
> the surface is 1/1000. I hope I explained this well, I will illustrate
> it with an image if you want.

Yes, I am planning on adding those sort of controls later. This was just 
my first working version...there is actually code for part of it(minimum 
angle) that is currently commented out and a bit incomplete. This will 
probably be the first thing I do when I get back to working on this 
patch(I am currently working on a particle simulator, in C++).

-- 
Chris Huff
e-mail: chr### [at] yahoocom
Web page: http://chrishuff.dhs.org/

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