[x3d-public] Deformable Skin Animation

Leonard Daly Leonard.Daly at realism.com
Fri Nov 11 09:53:55 PST 2016

I am trying to construct an example of deformable skin based on joint 
animation. The example calculates the new vertices for a very simple 
(and small) object. To work slowly through the process, I started the 
work in BS Contact. The calculation involves some matrix calculations. 
These appear to not be available in BS Contact's Script node. I have 
found problems with

  * X3DMatrix4
  * X3DMatrix4.setTransform
  * X3DMatrix4.multMatrixVec

This is the first time I have tried anything like this -- so I very well 
may be doing this wrong. If anyone has any references or examples where 
they did calculations with 4x4 matrices in BS Contact, please let me know.

So far, I have unrolled the calculations and am advancing (aka 
debugging) the algorithm. I will soon move it into X3DOM.

*Leonard Daly*
3D Systems & Cloud Consultant
President, Daly Realism - /Creating the Future/
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