Meshes grouped with an Empty Object do not show up

[n26]

Considering the following example:

 

 

When grouping meshes into an empty object, they do not show up when loaded in Babylonjs.

 

As of the example, only the non grouped cube is rendered:

 

 

Any idea how to fix this behavior?

 

Thanks

example.babylon.txt

[jahow]

Hi,

 

I've had a similar problem recently. It wasn't related to the mesh data, but to the way I was adding objects to the scene. As such, I would advise you to paste here the code you're using to initialize your scene.

 

Also you should make sure you're using the last Blender exporter (1.5). If I recall correctly, it has an option to only export meshes in a certain layer, maybe that is what's coausing you trouble?

[n26]

Thanks for the answer jahow. I am already using the latest Exporter (1.5). The Cube is contained in the resulting .babylon file.

 

I think I've found the issue. The Empty objects have their "isEnabled" property not being set to true. Enabling them solves the issue. I'll make a PR to Babylon to start a discussion about this on Github.

 

Edit: https://github.com/BabylonJS/Babylon.js/pull/354

[gryff]

n26 : I've experienced that too.

 

With a cube parented to an empty here is what I get for the meshes:

"meshes":[{"name":"Empty","id":"Empty","position":[0,0,0],"rotation":[0,0,0],"scaling":[1,1,1],"isVisible":false,"checkCollisions":false,"billboardMode":0,"receiveShadows":false},{"name":"Cube","id":"Cube","parentId":"Empty","materialId":"emptyw72.Material","billboardMode":0,"position":[2,0,0],"rotation":[0,0,0],"scaling":[1,1,1],"isVisible":true,"isEnabled":true,"useFlatShading":false,"checkCollisions":false,"receiveShadows":false,"positions":[1,-1,-1,-1,-1,-1,-1,-1,1,-1,1,1,-1,1,-1,1,1,-1,1,-1,1,1,1,1],"normals":[0.5773,-0.5773,-0.5773,-0.5773,-0.5773,-0.5773,-0.5773,-0.5773,0.5773,-0.5773,0.5773,0.5773,-0.5773,0.5773,-0.5773,0.5773,0.5773,-0.5773,0.5773,-0.5773,0.5773,0.5773,0.5773,0.5773],"indices":[0,1,2,3,4,5,6,7,5,0,5,4,4,3,2,6,2,3,6,0,2,7,3,5,0,6,5,1,0,4,1,4,2,7,6,3],"subMeshes":[{"materialIndex":0,"verticesStart":0,"verticesCount":8,"indexStart":0,"indexCount":36}],"instances":[]}],

And I don't see the cube. However, if i add manually "isEnabled':true,

"meshes":[{"name":"Empty","id":"Empty","position":[0,0,0],"rotation":[0,0,0],"scaling":[1,1,1],"isVisible":false,"isEnabled":true,"checkCollisions":false,"billboardMode":0,"receiveShadows":false},{"name":"Cube","id":"Cube","parentId":"Empty","materialId":"emptyw72.Material","billboardMode":0,"position":[2,0,0],"rotation":[0,0,0],"scaling":[1,1,1],"isVisible":true,"isEnabled":true,"useFlatShading":false,"checkCollisions":false,"receiveShadows":false,"positions":[1,-1,-1,-1,-1,-1,-1,-1,1,-1,1,1,-1,1,-1,1,1,-1,1,-1,1,1,1,1],"normals":[0.5773,-0.5773,-0.5773,-0.5773,-0.5773,-0.5773,-0.5773,-0.5773,0.5773,-0.5773,0.5773,0.5773,-0.5773,0.5773,-0.5773,0.5773,0.5773,-0.5773,0.5773,-0.5773,0.5773,0.5773,0.5773,0.5773],"indices":[0,1,2,3,4,5,6,7,5,0,5,4,4,3,2,6,2,3,6,0,2,7,3,5,0,6,5,1,0,4,1,4,2,7,6,3],"subMeshes":[{"materialIndex":0,"verticesStart":0,"verticesCount":8,"indexStart":0,"indexCount":36}],"instances":[]}],

It works fine.

 

It would be nice to have a check box in the exporter to enable the empty.

 

cheers, gryff

[gryff]

I see Jeff(?) did an update to the Blender exporter - Empties work fine now

 

Would have been useful when I was laying out all those trees in my Christmas Village scene  - the scene outline became awkward with dozens of entries.

 

cheers, gryff

[JCPalmer]

Someone, I think the thread owner, updated the exporter.  Too bad they forgot to update the version #.  Wish David would have rejected the pull request until it was set to 1.5.1

[GameMonetize]

Will fix it

[JCPalmer]

Thanks.  I do have a version 1.6 already coded, but all it had new was those new VR cameras, that most people do not even know exist yet.

 

Was holding off PR'ing while I considered exporting text object.  Have since abandoned that in favor of a font / sign generator .blend.

 

Also waiting due to major changes coming for Tower of Babel 2.0.  With the new BABYLON.Mesh constructor can now have computer built,  Module level, Mesh subclass factories. Coupled with app stores, where download is already pre-done, you can really pull off complex things much more easily that you can being stuck with only loading a BABYLON.Mesh.