Wasn't it Bill Hails who wrote:
>Mike Williams wrote:
>
>> [...]
>> 
>> What value are you using for max_trace?
>> 
>
>hmm, thanks for the suggestion, it was at the default
>but changing it to 20 made no difference.
>
>if it helps, here's my code for the isosurface cylinder
>(vim syntax highlighting converted to html):
>
>http://thyme.homelinux.net/IsoCylinder.html

I assume that's the old version, since it has no Max_trace in the
isosurface{} block.

In my tests, that code wouldn't work at all in conjunction with
difference{} until I added either max_trace or all_intersections inside
the macro.

[You couldn't possibly be confusing max_trace with max_trace_level,
could you?]

-- 
Mike Williams
Gentleman of Leisure

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