[PD] Gem - how to get a concave/convex plane

[cyrille henry]

Le 05/08/2018 à 01:28, oliver a écrit :
> cyrille henry wrote:
>> hello,
>>
>> you can try [curve3d]
> 
> cyrille, jack: thanks a lot for your kind help.
> 
> i tried both your suggestions with some success , but i'm not quite there yet.
> 
> 
> 
> i attached an example patch providing both methods and problems.
> 
> 
> basically [curve3d] works well, with a minor issue that can be worked around. though i don't understand why it's there.
Certainlly because I made a mistake with S T coordinate when I code this object, and you  are the 1st one to notice it.
I don't know if it's a bug that should be corrected, or a bug that is there for so long that it should stay for compatibility.
anyway, the workaround is easy.

best
c

> 
> the issue is that the applied texture is rotated by 90°. i tried several things to correct it ([pix_flip], [pix_coordinate]) but they all messed up the texture.
> 
> ========================================================================
> 
> the vertex-shader approach of jack produces the shape i was looking for, but unfortunately doesn't allow texture mapping. or at least i wasn't able to figure out how to do it.
> 
> thanks for any further thoughts ...
> 
> best
> 
> oliver
> 
> 
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