[x3d-public] What is a HAnimHumanoid?

[Holger Seelig]

As it turns out more things than a human body can be a HAnimHumanoid:

A almost real humanoid (you still may know):

https://create3000.github.io/x_ite/playground/?url=https://create3000.github.io/media/examples/HAnim/HAnimHumanoid/HAnimHumanoid.x3d

Not a humanoid, no it’s an animal, but still very humanoid (head, body, legs):

https://create3000.github.io/x_ite/laboratory/gltf-sample-viewer/?url=https://raw.githubusercontent.com/KhronosGroup/glTF-Sample-Models/master/2.0/Fox/glTF/Fox.gltf

Now, things get more and more weird…

It's not a humanoid; it's an alien, as humans imagine them.

https://create3000.github.io/x_ite/laboratory/gltf-sample-viewer/?url=https://create3000.github.io/media/glTF/Walking%20Alien/Walking%20Alien.gltf

Still a life form, but it's a plant:

https://create3000.github.io/x_ite/laboratory/gltf-sample-viewer/?url=https://create3000.github.io/x_ite/assets/teaser/pluto/palm_tree_-_animated.glb

Not even alive, no, it's a engine:

https://create3000.github.io/x_ite/laboratory/gltf-sample-viewer/?url=https://create3000.github.io/media/glTF/Futuristic%20Bike/Futuristic%20Bike.gltf

The main purpose of showing you this is to demonstrate that the HAnimHumanoid node can be used for many more objects than just a human body. The advantage is that all the complex animation processes can be handled by the GPU, while the CPU only performs minor translation and rotation interpolation. There is no need for a CoordinateInterpolator or a NormalInterpolator!
All of this can be achieved using the current HAnim specification. However, I would like to demonstrate how it can be used for purposes beyond those initially considered.

All these model (except first) are glTF models converted to X3D and using HAnim nodes for glTF skinning objects, which can be easily translated into X3D.
However, this calls into question the use of a strict set of HAnimJoint/Segment names and the HAnimHumanoid.loa field.

Best regards,
Holger

—
Holger Seelig
holger.seelig at yahoo.de


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