[x3d-public] What are valid children of HAnimHumanoid.skin? argument for allowing containerFields in x3d.py

Holger Seelig holger.seelig at yahoo.de
Sat Oct 28 12:39:05 PDT 2023


With X_ITE, all nodes that can be in the children field of a Group node can be in the skin field of a HAnimHumanoid. But only an X3DCoordinateNode can be in the skinCoord field, which is much more important for getting the humanoid to work.

Best regards,
Holger

--
Holger Seelig
Leipzig, Germany

holger.seelig at yahoo.de
https://create3000.github.io/x_ite/

> Am 28.10.2023 um 21:15 schrieb Joe D Williams <joedwil at earthlink.net>:
> 
> > argument for allowing containerFields in x3d.py 
>  
> I don't understand. If no container fields then not able to do all of x3d. We had to use containerField for the admittedly rare instance where the default is not true. These are cases where looking up the containerField in schema is not enough. 
>  
> Some are tricky, like skeleton where only the root Joint has to have the containerField as skeleton. 
>  
> skin contains a Shape which does not have children.
>  
> However we are investigating the idea of  how to code LOD choices for skin. I think we already know how to do that for that for Segment geometry.  
>  
> Thanks,
> Joe
>  
>  
> -----Original Message-----
> From: John Carlson <yottzumm at gmail.com>
> Sent: Oct 26, 2023 10:08 AM
> To: Joe D Williams <joedwil at earthlink.net>, X3D Graphics public mailing list <x3d-public at web3d.org>
> Subject: What are valid children of HAnimHumanoid.skin? argument for allowing containerFields in x3d.py
> 
>  
> From: https://www.web3d.org/specifications/X3Dv4Draft/ISO-IEC19775-1v4-DIS/Part01/components/hanim.html#HAnimHumanoid
> I see:
> MFNode     [in,out] skin                  []       [IndexedFaceSet, IndexedFanSet, IndexedQuadSet, IndexedTriangleSet, IndexedTriangleStripSet]
> And fromL https://www.web3d.org/documents/specifications/19774/V2.0/Architecture/ObjectInterfaces.html#Humanoid
> sequence<Object>   skin                  []           [indexed mesh objects as defined by the representation]
>  
> But in actual practice, I see:
>  
> <Shape DEF='Joe_Shape <https://www.web3d.org/x3d/content/examples/HumanoidAnimation/Skin/JoeKick.html#Joe_Shape>' containerField='skin'>
> <Appearance DEF='Joe_skin_Appearance <https://www.web3d.org/x3d/content/examples/HumanoidAnimation/Skin/JoeKick.html#Joe_skin_Appearance>'>
> <Material DEF='Joe_skin_Material <https://www.web3d.org/x3d/content/examples/HumanoidAnimation/Skin/JoeKick.html#Joe_skin_Material>' diffuseColor='0.3 0.3 0.6' emissiveColor='0.3 0.3 0.6'/>
> <ImageTexture DEF='JoeSkinImageTexture <https://www.web3d.org/x3d/content/examples/HumanoidAnimation/Skin/JoeKick.html#JoeSkinImageTexture>'
>   url=' "JoeBodyTexture29.png  <https://www.web3d.org/x3d/content/examples/HumanoidAnimation/Skin/JoeBodyTexture29.png>" "https://www.web3d.org/x3d/content/examples/HumanoidAnimation/Characters/JoeBodyTexture29.png  <https://www.web3d.org/x3d/content/examples/HumanoidAnimation/Characters/JoeBodyTexture29.png>" ' />
> <!-- ROUTE information for KickTextureTransform node:  [from SkinInterpolator.value_changed to rotation  <https://www.web3d.org/x3d/content/examples/HumanoidAnimation/Skin/JoeKick.html#ROUTE_194>] -->
> <TextureTransform DEF='KickTextureTransform <https://www.web3d.org/x3d/content/examples/HumanoidAnimation/Skin/JoeKick.html#KickTextureTransform>'/>
> </Appearance>
>  
> From:
>  
> https://www.web3d.org/x3d/content/examples/HumanoidAnimation/Skin/JoeKickIndex.html
>  
> And 
>  
> skin [
>         DEF Joe_Shape Shape {
>           appearance DEF Joe_skin_Appearance Appearance {
>             material DEF Joe_skin_Material Material {
>               diffuseColor 0.3 0.3 0.6
>               emissiveColor 0.3 0.3 0.6
>             }
>             texture DEF JoeSkinImageTexture ImageTexture {
>               url [ "JoeBodyTexture29.png" "https://www.web3d.org/x3d/content/examples/HumanoidAnimation/Characters/JoeBodyTexture29.png" ]
>             }
>             textureTransform DEF KickTextureTransform TextureTransform {
>             }
>           }
> ==================================================
> So it would seem like Shapes with an Indexed geometry is what we're aiming for in the standard as one of the possibly many children of the skin container field (note the space).
>  
> That is all okay, AFAIAC, just extremely confusing when deciding where to add containerFields in DOM documents.
>  
>  
> For example, consider the below:
>  
>                 <HAnimJoint USE='hanim_l_carpal_distal_interphalangeal_4'/>
>                 <HAnimJoint USE='hanim_l_metacarpophalangeal_3'/>
>                 <HAnimJoint USE='hanim_l_carpal_proximal_interphalangeal_3'/>
>                 <HAnimJoint USE='hanim_l_carpal_distal_interphalangeal_3'/>
>                 <HAnimJoint USE='hanim_l_metacarpophalangeal_2'/>
>                 <HAnimJoint USE='hanim_l_carpal_proximal_interphalangeal_2'/>
>                 <HAnimJoint USE='hanim_l_carpal_distal_interphalangeal_2'/>
> [ etc. ]
>  
> It may not be apparent, but X3DJSAIL complains about this. There's no containerField='joints', right?  But I'm generating this code using x3d.py which doesn't allow me to list containerFields!
>  
> Grr!  Here are some of the "brutzman" messages from X3DJSAI, which are valid.  I really want to assign joints as a containerField, so perhaps I will just do it in X3DJSONLD.
>  
>     [apply] [error] X3DLoaderDOM: Parent-child node relationship not found! (parent HAnimHumanoid, child HAnimJoint, containerField='children') Please report this problem to brutzman at nps.edu <mailto:brutzman at nps.edu>
>     [apply] [error] X3DLoaderDOM: Parent-child node relationship not found! (parent HAnimHumanoid, child HAnimJoint, containerField='children') Please report this problem to brutzman at nps.edu <mailto:brutzman at nps.edu>
>     [apply] [error] X3DLoaderDOM: Parent-child node relationship not found! (parent HAnimHumanoid, child HAnimJoint, containerField='children') Please report this problem to brutzman at nps.edu <mailto:brutzman at nps.edu>
>     [apply] [error] X3DLoaderDOM: Parent-child node relationship not found! (parent HAnimHumanoid, child HAnimJoint, containerField='children') Please report this problem to brutzman at nps.edu <mailto:brutzman at nps.edu>
>     [apply] [error] X3DLoaderDOM: Parent-child node relationship not found! (parent HAnimHumanoid, child HAnimJoint, containerField='children') Please report this problem to brutzman at nps.edu <mailto:brutzman at nps.edu>
>     [apply] [error] X3DLoaderDOM: Parent-child node relationship not found! (parent HAnimHumanoid, child HAnimJoint, containerField='children') Please report this problem to brutzman at nps.edu <mailto:brutzman at nps.edu>
>     [apply] [error] X3DLoaderDOM: Parent-child node relationship not found! (parent HAnimHumanoid, child HAnimJoint, containerField='children') Please report this problem to brutzman at nps.edu <mailto:brutzman at nps.edu>
>     [apply] [error] X3DLoaderDOM: Parent-child node relationship not found! (parent HAnimHumanoid, child HAnimJoint, containerField='children') Please report this problem to brutzman at nps.edu <mailto:brutzman at nps.edu>
>  
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