[x3d-public] HAnim Examples

[GPU Group]

Implemented HAnimMotion - may need touchups.

-Doug Sanden


My experience implementing v4 HAnimMotion in freewrl

- took 4 days

- there are some fuzzy areas - specs draft from last summer, and HAnim
specs don't match, and some inconsistencies in HAnim specs. For example
startFrame and endFrame are mentioned in text but not in fields list.

- the annexd scene in Hanim needed some touchups:

-- put HAnimMotion node inside HAnimNumanoid

-- changed frameTime='0.03' to frameDuration='0.03'

-- in code I change angles from degrees to radians

x not sure I have the sense of the angles and translations correct

- perhaps scene authors can tell from screen-capture video - link below


SPEC COMMENT >>>

I initially thought and still after implementing think it would be useful
to split the Motion node into MotionPlayer and MotionData

Then for scenes with multiple characters doing bits of motion
independently,

HAnimHumanoid 1:1 HAnimPlay m:1 HAnimData

so the data can be DEF/USEd by more MotionPlayers for different characters
in the scene

The MotionPlayer would hold state such as frameIndex for a specific Humanoid

- and the MotionData would hold the float values and channel descriptions.

<<< SPEC COMMENT


http://dug9.users.sourceforge.net/web3d/tests/hanim/freeWRL%202020-04-23%2020-09-44.mp4

http://dug9.users.sourceforge.net/web3d/tests/hanim/annexdA.x3d


https://sourceforge.net/p/freewrl/git/ci/develop/tree/freex3d/src/lib/scenegraph/Component_HAnim.c


- line 340 for 15 lines

- line 1090+

On Wed, Apr 22, 2020 at 5:44 PM GPU Group <gpugroup at gmail.com> wrote:

> SPEC COMMENT > V4 > HANIMMOTION >>>>
>
> I'm parsing the Motion AnnexD scene with a few tweaks.
> Initial thoughts:.
> Q. should Motion be split into MotionPlayer and MotionData?
> DEF/USE HanimHumanoid - marching troops - same skin and same synchronizes
> walk
> DEF/USE HAnimMotion - synchornized dancers -different skins and LOA, but
> still moving in syncrhonized walk
> - the Motion node would need to be parent-aware and hold a mapping to each
> parent separately
> DEF/USE HANimMotionData - several different characters in the scene
> walking at different times
> - you could do it the current node way, by including the motion data for
> each separate HAnimHumanoid.HanimMotion
> - but if the data was separate -and some of that data is a bit big and
> ugly in the scene file- then you'd only need it once for all the characters.
> -Doug Sanden
> <<<<  SPEC COMMENT > V4 > HANIMMOTION
>
> On Mon, Apr 20, 2020 at 3:01 PM GPU Group <gpugroup at gmail.com> wrote:
>
>> Thanks Don, will read up.
>> -Doug
>>
>> On Mon, Apr 20, 2020 at 2:47 PM Don Brutzman <brutzman at nps.edu> wrote:
>>
>>> [cc: group]
>>>
>>> Hi Doug.  Joe is on phone with me.  Joe notes that the HAnim2
>>> specification includes a Motion object and HAnimMotion example (clause 6
>>> part 2) but it is not in our X3D Example Archives - Basic HAnim examples.
>>>
>>> We have requested that Web3D replace the Draft International
>>> Specification (DIS) on the website with the now completed International
>>> Specification (IS) approved by ISO.
>>>
>>> Available already to Web3D members at
>>>
>>> [2.1]   GitHub: Web3D Consortium members, HAnim
>>>         https://github.com/Web3DConsortium/HAnim
>>>
>>> [2.2]   GitHub: Web3D Consortium members, HAnim Specifications combined
>>> parts 1 and 2
>>>
>>> https://github.com/Web3DConsortium/HAnim/raw/master/ISO-IEC19774-combined-IS.Web3D.zip
>>>
>>> On our Thursday afternoon call we will look at hands and feet (in
>>> response to IEEE 3DBP group), HAnimMotion and triage of the remaining
>>> examples.  I'll ask Anita to schedule a regular weekly zoom line for us,
>>> details will be under MEMBERS > RESOURCES > TELECONFERENCE.
>>>
>>> On 4/20/2020 1:11 PM, GPU Group wrote:
>>> > Q. is there an example scene using the v4 HAnimMotion node?
>>> > -Doug Sanden
>>> >
>>> > On Fri, Apr 17, 2020 at 8:29 AM Joseph D Williams <
>>> joedwil at earthlink.net <mailto:joedwil at earthlink.net>> wrote:
>>> >
>>> >     Hi All, a next practical step is to care for the web3D.org HAnim
>>> Archives. Lots is there and nothing is obsoleted except for new names for
>>> items of the skeleton but all can be updated. There is duplication and some
>>> important items not adequately demonstrated.
>>>
>>> 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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