"Neonux" <neo### [at] softhomenet> wrote in
news:3f6bd6dd@news.povray.org: 

> Very nice!
> 
> I wonder what these would be like in a hollowed out large sphere or a
> half pipe...?

I've finished implementing trace() in my code to allow the balls to 
collide with anything.  It works very well, and the time penalty is 
minimal, I was really surprised.  I've tried different types of objects, 
simple and complex, including isosurface objects.  Now I just need an 
interesting obstacle course for the balls to go through.

Thanks Neonux for the idea of the hollowed out sphere and half-pipe.  It 
was one of the first objects I tried when I was implementing trace() 
because one of the primary objectives for me was to test the rotational 
(rolling) aspect of my logic with trace() and your idea was perfect to 
test this.  Although the attached animation isn't that exciting it does 
show my collision to trace() logic at work.

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