[x3d-public] Fuzz testing HAnim

[Joseph D Williams]

Please try starting by looking at the example in hanim annex A.
Joe

From: John Carlson
Sent: Tuesday, March 24, 2020 7:51 PM
To: Joseph D Williams
Cc: X3D Graphics public mailing list
Subject: Re: [x3d-public] Fuzz testing HAnim

Sorry for the late reply. My guess is I need some kind of rigging tool?  Will blender do the job?

What is the target language? I'm guessing we need some kind of interpolators?

John

On Mon, Oct 7, 2019 at 1:22 AM Joseph D Williams <joedwil at earthlink.net> wrote:
 
The thing is, we need to unfuzz hanim.
Unfuzz meaning making the stuff work more accurately.
The first improvement would be more realistic joint models. Now we do joint rotations based on the idea that all joints work with the joint center of rotation fixed. Many joint types don’t actually do it this way, some slike and somehacve rotation centers change over the range. Some slide. X3d hanim doesn’t know about these joint types.
Notice how the skin works, being displaced due to the effect of several joints. We need a way for the joints and sites to be controlled the same way. First, for the joints, we need to be able to define a group of joints that can move toegehter, like the bones in the hands and feet.
Likewise, we nee a way for the site nodes to remain at the same skin vertex as the skin is deformed.
All Best, 
Joe
 
From: Joseph D Williams
Sent: Friday, October 4, 2019 8:19 PM
To: John Carlson; X3D Graphics public mailing list
Subject: Re: [x3d-public] Fuzz testing HAnim
 
 
John, sounds like you have a plan. What can we get from existing hanim animations? An interesting problem is successfully animating a transition from one scripted animation to another, like from one hand sign to another, smoothly and realistically. Unfortunately, the joint rotation constraints parameters are rarely implemented, that I have seen. 
Joe
 
 
From: John Carlson
Sent: Wednesday, October 2, 2019 7:10 PM
To: Joseph D Williams; X3D Graphics public mailing list
Subject: RE: Fuzz testing HAnim
 
Joe,

It’s called fuzzing, if you want to look it up.
 
Perform or save a stochastic or chaotic animation (clips, possibly) to test limb and joint constraints, etc.
 
John
 
Sent from Mail for Windows 10
 
From: Joseph D Williams
Sent: Wednesday, October 2, 2019 9:01 PM
To: John Carlson; X3D Graphics public mailing list
Subject: RE: Fuzz testing HAnim
 
Hi John, 
Please tell me what is a fuzz test.
The basis is Humanoid (humanoid space), skeleton composed of joints and segments (skeleton space), skin composed of points (skin space), animation bindings for joints to skin, and animation for the joints. What do we want to fuzz around with?
All Best, 
Joe
 
 
From: John Carlson
Sent: Tuesday, October 1, 2019 3:24 PM
To: X3D Graphics public mailing list; Joseph D Williams
Subject: Fuzz testing HAnim
 
To get familiar with HAnim, I want to generate a fuzz test for the nodes and fields.
 
Is anyone working on something similar?
 
Thanks,
 
John
 
 
 
 
 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://web3d.org/pipermail/x3d-public_web3d.org/attachments/20200324/74bddd07/attachment.html>