Le 03/01/2016 10:51, Le_Forgeron a écrit :
> Le 03/01/2016 08:51, kurtz le pirate a écrit :
>> Le 01/01/2016 14:21, Le_Forgeron a écrit :
>>> For kurtz le pirarte, from povray.general
>>>
>>
>> For
>>
>> complete code :
>>
>
> in your picture, you used a triangle... and your computation of the
> normal has TWO singularities with inversion of the sign on each side of
> them. Of course, the triangle is sensible to the sign of the normal.
>
> In attached code, you could replace the SV spline with something totally
> different. I just reuse the same function as for SU, and normalized the
> vector to get a constant width of the ribbon.
>

... that's exactly what I'm looking for.
i'll try to understand your code.
thanks


---
kurtz le pirate
compagnie de la banquise

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