In article <chr### [at] netplexaussieorg>, 
chr### [at] maccom says...

> Better would be to make it dependant on the distance along the 
> spline...

Yes, but thats not as easy to calculate. And it will be alway bigger or 
equal to distance between the points, so there isn't the danger of 
accidently taking a too large epsilon.

> Not really. Patches are converted to triangles for intersection testing, 
> but they can do adaptive subdivision on the fly,

I thought the subdivision is only perfomed once, when generating the 
triangles (unless type 0 is used)

> It is harder to connect them  smoothly, as well.

This may be true in general, but for just building a lathe shape it isn't 
a problem.

Lutz-Peter

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