[x3d-public] Units for BVH vs HAnimMotion.values

[GPU Group]

Freewrl has implemented HAnimMotion and is currently expecting degrees, but
willing to add a field on the Motion node to specify angleUnits so will
take either.
-Doug


On Fri, Oct 13, 2023 at 1:47 PM GPU Group <gpugroup at gmail.com> wrote:

> I have the same question and posted it on h-anim. Might help to have some
> options and analysis of the options.
> 1. Units statement
> Analysis: that would apply to all rotations in the file, including other
> scenery Transform rotations which is awkward for most workflows
> 2. Motion.values in radians by default
> Analysis: will break some scene example data such as HAnim Annex D
> Motion.values which is in degrees
> - would need to update Annex D
> 3. Motion.values in radians by default, and browsers can support degrees
> with a field
> Motion {
> SFString [] angleUnits 'RADIANS' ['RADIANS', 'DEGREES']
> //or
> SFBool [] angleUnitsDegrees FALSE
> }
> Analysis: would still break the Annex D example which doesn't show any
> Motion field for angle units, and would need to update the specification
> for Motion to include an additional field.
> 4. export in degrees, and put an export option on the export option panel
> for Motion data in [degrees, radians] so browsers will still work either
> way until a more permanent solution such as 2 or 3.
> Q. how many web3d browsers have implemented HAnimMotion and angle units
> did you use for Motion.values ?
> -Doug
>
> On Fri, Oct 13, 2023 at 12:44 PM John Carlson <yottzumm at gmail.com> wrote:
>
>> Apparently BVH uses degrees for rotations.  Units for HAnimMotion should
>> use radians unless otherwise specified in a UNIT statement, AFAIK.
>>
>> Comments?
>>
>> Thanks!
>>
>> John
>> _______________________________________________
>> x3d-public mailing list
>> x3d-public at web3d.org
>> http://web3d.org/mailman/listinfo/x3d-public_web3d.org
>>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://web3d.org/pipermail/x3d-public_web3d.org/attachments/20231013/c45d0500/attachment.html>