[x3d-public] Extrusions, take 3

[John Carlson]

Leonard, I think you forget that Extrusion splines etc. can be animated.  If Maya can export an Extrusion animation to X3D V4.0 and your new elements can handle animation of it, I think we are fine.

John
> On Jan 26, 2016, at 1:47 PM, Leonard Daly <Leonard.Daly at realism.com> wrote:
> 
> 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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