3D patches

[Ben Abbott]

On Mar 25, 2009, at 2:17 AM, David Bateman wrote:

> Ben Abbott wrote:
>>
>> On Mar 24, 2009, at 12:39 PM, Ben Abbott wrote:
>>
>>>
>>> This appears to result for a 3D view of 2D patches. Actually the  
>>> gnuplot "patch" is a filled curve, and may only be viewed in 2D.
>>>
>>> So the current fix is to either delete the filled contour, or to  
>>> delete the 3D surface.
>>>
>>> The preferred solution (I think) would be to implement patches  
>>> using the a 3D surface rather than the 2D filled curve.
>>>
>>> There was a closely related discussion on another thread, I've  
>>> cc'd Martin and David.
>>>
>>>   https://www-old.cae.wisc.edu/pipermail/octave-maintainers/2009-March/011289.html
>>>
>>> Should this be moved to the maintainers list?
>>>
>>> Ben
>>
>> I've moved it to the maintainers list.
>>
>> Ben
>
> What is being discussed in this other thread is only triangular 3D  
> patches as anything else in gnuplot is currently not easy to do.  
> This is enough for the iso* functions and the trisurf function.  
> However contourf needs to have arbitrary patches, so this won't help
>
> D.

Ok. That part has slipped past me.

Regarding the current need for a general 3D patch with a planar  
constraint (i.e. a rotated 2D geometry), does anyone have an idea for  
how such a patch may be rendered using gnuplot?

Ben