[x3d-public] X3D and glTF Features Comparison: morph targets and human animation

[Don Brutzman]

[cc: H-Anim]

Excellent reference at Wikipedia:

	Morph target animation
	https://en.wikipedia.org/wiki/Morph_target_animation

"Morph target animation, per-vertex animation, shape interpolation, or blend shapes[1] is a method of 3D computer animation used together with techniques such as skeletal animation. In a morph target animation, a "deformed" version of a mesh is stored as a series of vertex positions. In each key frame of an animation, the vertices are then interpolated between these stored positions."

There were also arguments against listing X3D as Yes for morph targets during the review, so we took a conservative approach and did not want to overclaim capabilities.  It would be helpful if they were listed so that close review might occur. Patiently building consensus always gets us to the right answer...

Perhaps we should author/export and publish more example HAnim scenes demonstrating this technique?  Adding morph-target export from Blender to X3D HAnim seems like a powerful project to pursue...

	Blenderella: Learn Character Modeling
	https://cloud.blender.org/p/blenderella
	


On 12/23/2017 8:28 PM, Joseph D Williams wrote:
> Morph targets No Yes
> 
> X3D does morph targets using HAnim Displacer (standard coordinateinterpolator operations do it too). As long as the number of points is the same from begin to end morph, then all is as expected.
> 
> Joe
> 
> Sent from Mail <https://go.microsoft.com/fwlink/?LinkId=550986> for Windows 10
> 
> *From: *Don Brutzman <mailto:brutzman at nps.edu>
> *Sent: *Saturday, December 23, 2017 12:24 PM
> *To: *X3D Graphics public mailing list <mailto:x3d-public at web3d.org>
> *Subject: *[x3d-public] X3D and glTF Features Comparison
> 
> The X3D Working Group is please to release an updated X3D and glTF Features Comparison.
> 
> Since we are considering how glTF might be included as loadable external geometry in X3D version 4, the comparison spreadsheet is attached at
> 
>             X3D Version 4 | Web3D Consortium
> 
>             http://www.web3d.org/x3d4
> 
>             glTF X3D Features Comparison (3 NOV 2017)
> 
>             http://www.web3d.org/sites/default/files/page/X3D%20Version%204/glTfX3dFeaturesComparison.pdf
> 
> Several months of dedicated review and consideration has produced this excellent document, building on important initial work by Leonard Daly.
> 
> Further review, comments and improvements are welcome.  Have fun with X3D and glTF!  8)

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