On 14/12/2018 02:04, Ton wrote:
> I used two bicubic patches for the bridge. But that's only two, in two
> dimensions. Bicubic patches would be good for the hull, or any curved shape


Here I go again like a stuck record. :)

Bishop3D uses bicubic patches. That is what I used to throw my image 
together. It can also import a subset of Pov ver 3.6 sdl.
Moray uses bicubic patches and its method is better. It can create 
stitched together bicubic patches.

<aside> I should have mentioned that when Bald Eagle was doing it 
programmatically. Sorry Bill, it could have served as a reference. </aside>

Early this morning I found that Nvidia had rendering software called 
Gelato that can use bicubic patches and Nvidia GPUs. It is no longer 
supported but it is free to download. It cost 1500 USD at the time.
The download came with 3DMax, Mayo and Renderman plugins.
I will try the free version of Renderman and see if I can get it working.



-- 

Regards
     Stephen

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