How to get world transform of meshes exported from Blender?

Questions
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1

Exporting a scene from Blender with different meshes, I’m trying to get the actual position, rotation and scale of each mesh from the world origin.

In the Blender scene, I import a mesh from a .glb file. Then I duplicate it, and I move, rotate and scale the duplicated one. I apply all transforms to both meshes to let Babylon add-on export the scene.

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Then when I import that scene into Babylon, both meshes are in the 0,0,0 position, 0,0,0 rotation and 1,1,1 scale.

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How can I export a scene from Blender to get the actual transform of each mesh from the world origin?

2

You may find the mesh position with mesh.absolutePosition.
As well as absolutePosition and absoluteScaling - Babylon.js docs

3

So position rotation and scaling are the local transforms, they wil be usually at origin, and I should work with absolutes?

I’ve just checked and absolute position is also 0,0,0.

For what I’ve reading in this post, I can use mesh.getBoundingInfo().boundingBox.centerWorld to get the actual position, but this is not desired.

The good path would be getting actual position directly from Blender export data.

5

I don’t get why I have the mesh in this position in Blender, with the origin set to the geometry:

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And in Babylon is appears under the floor:

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I’m clearly missing something.

6

Are you using gltf or babylon format to export?

7

I’m using Babylon exporter 3.3.2

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Is it right to export an entire scene using the Blender glTF native exporter?

8

If you don’t have things which are not supported by GLTF format, it is completely OK.

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9

What kind of things are not supported?

Lights, cameras, animations, materials, shaders…?

10

Lights, cameras, animations, materials, shaders: all of that is supported :slight_smile:

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11

For example, partcle systems are not supported in GLTF format.

12

That’s not a problem, the game engine will generate them. I will go for .glb files.

Thanks!

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