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Awesome work!!!<br>
<br>
<div class="moz-cite-prefix">On 4/3/13 8:07 PM, Don Brutzman wrote:<br>
</div>
<blockquote cite="mid:515CEE5C.1090704@nps.edu" type="cite">Joe and
I are starting to slog through examples. William Glascoe cheered
us on tonight. Here are notes, questions welcome.
<br>
<br>
Our slogan is "the path to H-Anim 2 must first go through H-Anim
1." We've got to make sure all of the good work in the past is
captured, documented, tested and repeatable. Here we go!
<br>
<br>
1. We reviewed specification and tooltips as part of this, making
some nice clarifications to the tooltips.
<br>
<a class="moz-txt-link-freetext" href="http://www.web3d.org/x3d/content/X3dTooltips.html#HAnimHumanoid">http://www.web3d.org/x3d/content/X3dTooltips.html#HAnimHumanoid</a>
<br>
<br>
2. We next decided to first tackle the DiamondMan models.
<br>
<br>
<a class="moz-txt-link-freetext" href="http://www.web3d.org/x3d/content/examples/Basic/HumanoidAnimation/DiamondManLOA-0.html">http://www.web3d.org/x3d/content/examples/Basic/HumanoidAnimation/DiamondManLOA-0.html</a>
<br>
<a class="moz-txt-link-freetext" href="http://www.web3d.org/x3d/content/examples/Basic/HumanoidAnimation/DiamondManLOA-0.x3d">http://www.web3d.org/x3d/content/examples/Basic/HumanoidAnimation/DiamondManLOA-0.x3d</a>
<br>
<br>
To avoid breaking the original copyright, we looked at whether
shuffling Matt's metadata helped clarify things. For example:
<br>
<br>
<Group DEF='OriginalAuthorMetadata'>
<br>
<WorldInfo info='"HANIM 1.1 Default Joint Centers,
Level-Of-Articulation 1
-------------------------------------------------------- HANIM 1.1
(VRML 2.0) Author name: eMpTy (a.k.a. Matthew T. Beitler) HANIM
1.1 (VRML 2.0) Author email: <a class="moz-txt-link-abbreviated" href="mailto:beitler@graphics.cis.upenn.edu">beitler@graphics.cis.upenn.edu</a> or
<a class="moz-txt-link-abbreviated" href="mailto:beitler@acm.org">beitler@acm.org</a> HANIM 1.1 (VRML 2.0) Author homepage:
<a class="moz-txt-link-freetext" href="http://www.cis.upenn.edu/~beitler">http://www.cis.upenn.edu/~beitler</a> HANIM 1.1 (VRML 2.0) Compliance
Date: May 12, 1999 HANIM 1.1 Compliance Information:
<a class="moz-txt-link-freetext" href="http://ece.uwaterloo.ca/~h-anim/">http://ece.uwaterloo.ca/~h-anim/</a> Construction Info (joint
centers): The joint centers of this figure are based on the work
of Norman Badler, director of the Center for Human Modeling and
Simulation at the University of Pennsylvania. The original
document which these joint centers are based on can be found at:
<a class="moz-txt-link-freetext" href="http://www.cis.upenn.edu/~badler/anthro/89-71.ps">http://www.cis.upenn.edu/~badler/anthro/89-71.ps</a>, .pdf"'
title='HANIM 1.1 Default Joint Centers, LOA0'/>
<br>
<!-- Original HAnimHumanoid
info='<a class="moz-txt-link-rfc2396E" href="mailto:authorEmail=beitler@graphics.cis.upenn.edubeitler@acm.org">"authorEmail=beitler@graphics.cis.upenn.edu beitler@acm.org"</a>
"authorName=Matthew T. Beitler" "copyright=Copyright 1999 Matthew
T. Beitler" "creationDate=05/12/99" "humanoidVersion=JointCenters
1.1 LOA0" "usageRestrictions=PERMISSION TO FULLY USE THIS SCENE
GRAPH IS GRANTED PROVIDED THIS COPYRIGHT INFORMATION AND
DOCUMENTATION OF THE ORIGINAL AUTHOR IS INCLUDED. This humanoid
scene graph is provided _as-is_ and without warranty of any kind
express implied or otherwise including without limitation any
warranty of merchantability or fitness for a particular purpose."'
-->
<br>
</Group>
<br>
<br>
Still pretty darn confusing...
<br>
<br>
3. Attached are screen snapshots for how to X3D-Edit allows
editing HAnimHumanoid node.
<br>
<br>
Notice the tabbed support for the "info" field, breaking the
information attributes into repeatable chunks.
<br>
<br>
This is the kind of help that tools can provide to authors who are
checking or creating content. Am hoping to do more and more of
that.
<br>
<br>
So this first examination took some time, but it helped us get
recentered on what is possible and what can be improved.
<br>
<br>
4. The Quality Assurance checkbox in X3D-Edit showed the
following scene errors in diamond man LOA 0:
<br>
<br>
cvc-complex-type.4: Attribute 'name' must appear on element
'HAnimJoint'.
<br>
cvc-complex-type.4: Attribute 'name' must appear on element
'HAnimJoint'.
<br>
etc.
<br>
<br>
So that is a previously unsuspected error in this scene (and
others) that need to be fixed.
<br>
<br>
Cool! The worst bugs are undiscovered bugs, now we found things
to fix.
<br>
<br>
Anyone can confirm this diagnosis using the X3D Validator.
<br>
<a class="moz-txt-link-freetext" href="https://savage.nps.edu/X3dValidator">https://savage.nps.edu/X3dValidator</a>
<br>
<a class="moz-txt-link-freetext" href="http://www.web3d.org/x3d/content/examples/Basic/HumanoidAnimation/DiamondManLOA-0.x3d">http://www.web3d.org/x3d/content/examples/Basic/HumanoidAnimation/DiamondManLOA-0.x3d</a>
<br>
<br>
We traced down the reason for this requirement. It is found in
the H-Anim 1.1 specification:
<br>
<a class="moz-txt-link-freetext" href="http://h-anim.org/Specifications/H-Anim1.1/#nodes">http://h-anim.org/Specifications/H-Anim1.1/#nodes</a>
<br>
"The Joint node is also used to store other joint-specific
information. In particular, a joint name is provided so that
applications can identify each Joint node at runtime."
<br>
<br>
We checked the H-Anim specification for each and every node. The
name field is always required for each of the nodes.
<br>
<br>
I checked our X3D Schematron rules and found that it would allow
an empty name to pass through... ouch. now fixed!
<br>
<br>
We also found that X3D DOCTYPES and X3D Schema were also
inconsistent/mistaken about requiring the name fields... also
fixed!
<br>
<br>
Found another problem with suggested values. Future fix follows:
<br>
- TODO confirm, add jointNames and segmentNames as shown in
<br>
<br>
<a class="moz-txt-link-freetext" href="http://www.web3d.org/files/specifications/19774/V1.0/HAnim/concepts.html#Hierarchy">http://www.web3d.org/files/specifications/19774/V1.0/HAnim/concepts.html#Hierarchy</a>
<br>
<br>
These corrections will all be tested, confirmed OK and then pushed
to our public sites, then announced separately.
<br>
<br>
Way cool!! More bugs getting found for fixing, now and in
future. 8)
<br>
<br>
<br>
5. Joe suspected that this LOA model is actually more complicated
than it should be... so we checked. Yes it is more than Level 0,
too many joints there. This led to a number of other issues which
we explored.
<br>
<br>
The H-Anim 1.1 spec lists legal Joint and Site values for each
Level of Articulation (LOA).
<br>
<a class="moz-txt-link-freetext" href="http://h-anim.org/Specifications/H-Anim1.1/appendices.html#appendixa">http://h-anim.org/Specifications/H-Anim1.1/appendices.html#appendixa</a>
<br>
<br>
This is very cool... also pretty mixed up. We found:
<br>
<br>
- H-Anim specifications are not correctly linked (or labeled
regarding status) on Web3d.org, Len and Dick can you please fix?
<br>
- There is a lot of internal structure in HAnim that has always
been pretty well defined but hard to follow
<br>
- We will make improvements in validation and tools to help
authors by taking advantage of this required structure
<br>
- For example, X3D Schematron should be able to tell what LOA a
scene actually is; we will write rules for that
<br>
- We will start a wiki page dedicated to just listing fixes needed
in the next round of H-Anim specification update (fixes and
clarifications, not adding any brand-new functionality)
<br>
- The Diamond Man examples in the archive are pretty good, but
carry along baggage with them... We expect to start some new
examples for LOA levels that match the spec more simply.
<br>
<br>
Whew. Almost three hours to get just this far and we found even
more to do... but lots of really solid progress!
<br>
<br>
Totally encouraging. Comments and questions welcome. Thanks Joe
and thanks William. Onward we go.
<br>
<br>
all the best, Don
<br>
<br>
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