[x3d-public] Extrusions, take 3

[Leonard Daly]

I would like to ask the question very differently. My question is not to 
ignore the importance of getting the definition correct for X3D <= V3.3.


Most (>95%) 3D modeling is done with a tool. In non-CAD environment, the 
tools is almost certainly Maya or Blender. Both of those tools have 
extrusions built in to their interface. I imagine CAD tools are similar. 
With so many tools providing graphical extrusion editors, and some of 
the tools being open-source (at least Blender);

Do we need an extrusion node in V4 to support content developed for V4+?


Leonard Daly



On 1/26/2016 7:15 AM, Alekseyev, Vsevolod (NIH/NIAID) [E] wrote:
> Hi X3D community,
>
> I've tried and failed twice to explain the problems with the 
> definition of the Extrusion node. So here's a tl;dr version:
>
> Dear authors of the X3D standard, please take a careful look at the 
> standard and answer me:
>
> 1) When the spine goes (0,0,0)-(0,-1,0), what is the CSP?
> Note: all answers but one will render one of the reference models in 
> the Savage archive invalid.
>
> 2) When the spine goes (0,0,0)-(0,1,0)-(0,0,0), what is the CSP?
>
> 3) When the spine goes (0,0,0)-(1,1,0)-(1,1,0)-(1,1,0)-(2,0,0), what 
> is the CSP for the three middle points?
>
>
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-- 
*Leonard Daly*
3D Systems & Cloud Consultant
X3D Co-Chair on Sabbatical
LA ACM SIGGRAPH Chair
President, Daly Realism - /Creating the Future/
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