[X3D-Public] [h-anim] view3dscene support for h-anim visualization

[Joe D Williams]

> view3dscene has some nice support for h-anim Joint visualization:
> spheres and names (as text).

Yes, wonderful to show the HAnim model data structure like that, along 
with a hierarchy diagram to complete the basic documentation. Easy to 
see the sparse detail of the feet and ankle in our current skeleton 
spec.

A very nice way to start defining your personal character. Just edit 
the Joint center locations to your dimensions, save it with your name 
on it, and you are off to a great start with a 'standard' ISO 
Humanoid.

Great Guest, and of course my aim was to reveal the deepest details of 
classic X3D HAnim, except I left out our end-effectors. I didn't 
mention our highly parameterized and instrumentable skeleton and skin 
structures and barely hinted at the potential of haptic connections 
with this HAnim model. I also left out that I am sure that the entire 
reason for VRML and X3D is to present the most realistic and 
responsive Humanoid possible for creative play in collaborative 
environments.

Reminds me that we need a skin or two or three or maybe four.

The idea is an example of about 30000 vertices, another example at 
maybe 8000 to 10000 points, another from about 7000 to 4000, and 
another with maybe 1500 or so.
The intent is to align with the various levels of articulation 
possible with skeleton LOA0, 1, 2 and 3, ... . Each skin includes a 
mapped texture that identifies by mark the set of surface Site (Annex 
A) and surface feature point (Annex B) locations.

The binding details start with providing:

(1) a continous-mesh that is drawn in tight 'A' pose (see HAnim 
skeleton default pose prior to animation), drawn in typical human 
space, 0 0 0 origin between the feet (root x and z at 0, xyz vertex 
position in meters (see example typical skeleton dimensions in Annex 
A), with point max-z at skull-tip site, with point index proceeding 
ccw in the same general order as the Humanoid skeleton hierarchy 
diagram given in the spec. The general intent is to group sets of 
vertices that will be bound to individual and adjacent Joint nodes.

Further, it is preferred that the set of vertices that represent the 
position of defined surface features are preserved in each denisity 
rendition of the mesh.

This geometry will be used as an HAnim Humanoid skin field.

(2) All Joint skinCoordIndex[] and skinCoordWeight[] data for each 
particular skin binding to matching skeleton LOA. This data binds 
deformation animation of the skin.

Together the skins and the appropriate index and weight data are used 
as reference LOA examples to support HAnim and X3D implementations.

Thanks Again,
Joe

----- Original Message ----- 
From: "Don Brutzman" <brutzman at nps.edu>
To: "Human Animation working group" <h-anim at web3d.org>
Cc: "Michalis Kamburelis" <michalis.kambi at gmail.com>; "X3D Graphics 
public mailing list" <x3d-public at web3d.org>
Sent: Wednesday, July 31, 2013 5:44 PM
Subject: [h-anim] view3dscene support for h-anim visualization


> view3dscene has some nice support for h-anim Joint visualization:
> spheres and names (as text).
>
> screenshot attached for HAnimSpecificationLOA3Invisible.x3d
> http://www.web3d.org/x3d/content/examples/Basic/HumanoidAnimation/HAnimSpecificationLOA3Invisible.x3d
>
> invocation:  view3dscene -> edit -> Add Humanoids Joint 
> Visualization
>
> availability:
>
> http://www.web3d.org/x3d/content/examples/X3dResources.html#Applications
>
> Castle Game Engine is used to build view3dscene, a free 
> cross-platform
> VRML/X3D browser that also supports other 3D model formats. (MacOSX,
> Linux, FreeBSD)
> http://castle-engine.sourceforge.net/view3dscene.php
>
> pretty cool!  Thanks Kambi.
>
> all the best, Don
> -- 
> Don Brutzman  Naval Postgraduate School, Code USW/Br 
> brutzman at nps.edu
> Watkins 270,  MOVES Institute, Monterey CA 93943-5000 USA 
> +1.831.656.2149
> X3D graphics, virtual worlds, navy robotics 
> http://faculty.nps.edu/brutzman
>


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