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Messages - yetanotherpeter

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General Anim8or Forum / Re: How smoothing?
« on: March 19, 2009, 05:57:33 pm »
Do you mean like sub-division smoothing?

Not really. Subdivisioning is only good, if the existing vertices are good. If they contain noise, other artefacts or less than optimal construction, subdivisioning doesn't help.

OTOH, it is of course a valuable step together with smoothing, but if your vertices come from digitization, you may even want to reduce the number of vertices.

General Anim8or Forum / Re: How smoothing?
« on: March 18, 2009, 10:36:08 am »
hows does that work in laymans terms?

I'm quite a failure regarding explanations in laymans terms, but:

Think some sort of elastic surface as an approximation of the vertices in a neighborhood. If now some vertices are off from the overall gestalt of the surface, the elastic forces will pull them back to towards it. It's a bit like splines, which can be thought as elastic rulers trying to fit points, see:

Quadrics because all smooth surfaces look locally like a quadric, it's some sort of taylor expansion:

General Anim8or Forum / Re: How smoothing?
« on: March 17, 2009, 11:41:21 pm »
I don't know whether this matches OP's intention at all, but my dream tool for smoothing would an effect working on specified volume which minimizes a suitable chosen energy function of the mesh.

In the ideal case (which I assume isn't achievable) any two dimensional quadric (ellipsoid, hyperboloid) would have energy zero and the tool would drag vertices towards the quadric approximating their neighborhood.

General Anim8or Forum / Re: File format documentation
« on: March 17, 2009, 11:30:30 pm »
Thanks for the hints and pointers so far. I was aiming for Python or Lua, but I can read C++, so the LibAn8 source will be a valuable reference.

General Anim8or Forum / File format documentation
« on: March 17, 2009, 03:45:37 pm »
Dear All,

Is this description from 2003 still valid:

Suggestion for other resources, when trying to write converters?


General Anim8or Forum / Re: .x import
« on: February 16, 2009, 08:12:40 pm »
Hi Claude, All,

Yep, I already assumed that it can't be done by an ASL script. I was looking for a solution of any kind (minus buying are pirating expensive commercial stuff).

And if nothing is available, but you can confirm that the semantics of the .x and anim8or are similiar enough, I will even try to converter myself if someone can point me to the documentation of the file formats.


General Anim8or Forum / .x import
« on: February 09, 2009, 08:15:50 am »
I've seen the .x exporter realized as script. Is there a .x importer somewhere?

Or is this a silly question because the semantic mismatch between the .x format and anim8or internal format is too large?


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