Blender Exporter doc needs feedback

[V!nc3r 223]

Hi Blender users!

We have to enhance the doc about how to get things from Blender to BJS.

Here the existing one: http://doc.babylonjs.com/resources/blender

and also some tips: http://doc.babylonjs.com/resources/blender_tips

Github issue can be found here: https://github.com/BabylonJS/Documentation/issues/556

You can use github or this forum to suggest some missing parts, and you can, of course, suggest direclty here content to "copy-paste" If you prepare screenshots, please use the default Blender theme "Flatty light".

If you want to see the advancement, here is my doc' fork.

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Nota Bene:

(I put here a list which will be updated to easily retrieve some tips/methods/asking)

• about animation, something to investigate: when animating multiple objects, use have to rename each action with objectName-Action? Another one.
• about animation, explanations from JCPalmer, contribution to future changelod.md too.
•  Blender animation parenting & pivot issue - instructions
• http://www.html5gamedevs.com/topic/34026-animation-methodology-review/
• http://www.html5gamedevs.com/topic/37162-blender-animations/?do=findComment&comment=212575
• http://www.html5gamedevs.com/topic/37272-blender-exporter-scaling-issue/?do=findComment&comment=213037
• http://www.html5gamedevs.com/topic/37390-babylon-animations-array/?do=findComment&comment=213651
• http://www.html5gamedevs.com/topic/37557-blender-shape-keys-babylon-morphtargetmanager/?tab=comments#comment-214455
• animating a child mesh http://www.html5gamedevs.com/topic/37959-animating-a-child-mesh-from-blender-to-bjs/
• export multiple actions vs only current : http://www.html5gamedevs.com/topic/37972-blender-exporter-total-frames/?tab=comments#comment-217375

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todo list canceled for now:

• about automatic baking  : can't be avoid for now

[V!nc3r 223]

I've already one question! Animation is not my thing, so: when doing a classic rotation anim' on a object, is a rotation mode is better than other?

@gryff, are you still OK to help me (even just a little) on the anim' part?

[Wingnut 2301]

Heya V!  Cool project!  We could use all the Blender-to-BJS docs/info we can get, for sure.

Gryff's last login was October 17, 2017.  I think he is tied-up with some real-life issues... so he went forum-sleepy.

To GUESS at your question, I would say xyz Euler is the #1 type... with its values stored in mesh.rotation.

Quaternion is #2, with its values stored in mesh.rotationQuaternion.

BJS animation system handles both types... nicely. 

This is all my opinion, based-upon SOME experience... but not very much.  So, stay tuned for wiser comments.

[Deltakosh 4315]

I can't agree more! Excellent idea! We need more help on the doc side!!

 

And I agree with @Wingnut on the rotation thingy!

[JCPalmer 725]

A little more refinement about animation rotation.  It simply does not matter for armature animation, since the animation itself IS NOT exported, the performance is.  As the export performs the animation, it is reading / converting the Matrices, which are quaternion based.  So for armatures, whatever works in Blender.

For Meshes, lights, & cameras:  the two @Wingnut lists are the ones.  Quaternion is not susceptible to gimbal  lock, but NOT very easy to work with if you are also coding stuff on the BJS side too.

[V!nc3r 223]

changelog added, and installation how-to merged into main doc page.

[edit] always impressed by Deltakosh reactivity when issue/PR are made on github [/edit]

[Deltakosh 4315]

hahaha

[V!nc3r 223]

• Blender to glTF created
• both .babylon & .gltf from Blender have now a quick how-to-load example.

[Deltakosh 4315]

You literally rock!

[V!nc3r 223]

Thanks! Now that I better understand github... and even some git command and logic, it's much more easier to contributes, and also to have no fear to broke something.

[Deltakosh 4315]

That's really cool!

[V!nc3r 223]

To note for the future: Blender 2.8 now have Blender Render officilally deleted

[JCPalmer 725]

5 hours ago, V!nc3r said:

To note for the future: Blender 2.8 now have Blender Render officilally deleted

More accurately, all 3 former renders (internal, game, & cycles) have been replace with EEVEE.  Latest builds.  Looks like a modified Cycles.

Loading prior blends, geometry comes thru, internal render materials com thru mostly stripped.

The exporter (TOB actually) loads, but errors way before it even gets to materials.  The JSON exporter would do the same.  Seems a little early, but did make some bookmarks in the API concerning that uber material / Principled bsdf.

While I have direct commit on the exporters repo, I am not comfortable on adding branches.  @Deltakosh, can you add a EEVEE branch (no hurry)?

[Deltakosh 4315]

Done: https://github.com/BabylonJS/Exporters/tree/EEVEE

[V!nc3r 223]

my first words about animation: http://doc.babylonjs.com/resources/blender#animation

 

[Deltakosh 4315]

YOU ROCK!

[V!nc3r 223]

Thanks For now it's just the very first step, I will enhance this part as soon as can. However, if Blender users can already read this animation part and tell me if it's clear or already need tweaking?

[V!nc3r 223]

@JCPalmer do not try to tweak the addon for 2.8 yet ;) https://code.blender.org/2018/06/beyond-the-code-quest/

Quote

September 19: Final Python API

• Call for add-on developers to update old add-ons.

 

[V!nc3r 223]

Could an admin move this thread to Content creation section? Thanks :)

[Deltakosh 4315]

Done

[Cgflux Studio 0]

Hi. how to create materilas in blender 2.8? I put Principled bsdf to object of logo sample file and eksport. But object is black. Can you help me?