On 11/12/2010 5:31 PM, Jim Holsenback wrote:
> On 12/11/2010 10:01 AM, Stephen wrote:
>> Maybe the warning should say something like:


>
> howz zat ...
>
http://wiki.povray.org/content/Documentation:Reference_Section_4.1#Finite_Patch_Primitives
>

That was quick, Jim. :-D

I actually thought that, that message should be the Pov-Ray warning.
What I think the documentation should say is along the lines of.

Solids may be differenced from bicubic patches with the output giving 
the expected results. That is the solid object cuts a hole in the patch.
Differencing a bicubic patch from a solid may give unexpected results, 
especially if the inverse keyword is used.

Intersecting a solid and a bicubic patch will give the expected results. 
That is the parts of the patch that intersect the solid object will be 
visible.

Merging a solid and a bicubic patch will remove the parts of the bicubic 
patch that intersect the solid.

<end>

It is a bit wordy and could use some sub-editing.



-- 
Regards
     Stephen

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