Unable to click on an imported mesh from blender

Questions
1

Hi,

I would like to execute some custom code when i click on a mesh.
So i did this :

mesh.actionManager.registerAction(new ExecuteCodeAction(ActionManager.OnPickTrigger, (event) => console.log(‘HEY!’)));

The callback is never called when i click on the mesh. So i tried to debug, and this is what i found :
when the code flow hit the AbstractMesh.Intersect function, this conditional statement is evaluated:

if (!this.subMeshes || !boundingInfo || !ray.intersectsSphere(boundingInfo.boundingSphere, intersectionThreshold) || !ray.intersectsBox(boundingInfo.boundingBox, intersectionThreshold)) {
return pickingInfo;

Every conditions returns true until the ray.intersectsBox call. This one return false, so i got a pickingInfo without a picked mesh. This might be the source of the problem.

A bit of context : i’m coding in typescript with the modular ES6 version of Babylonjs.
I got others problems before this one, the latest was resolved by including this import :

import “@babylonjs/core/Culling/ray”;

I was thinking maybe an other import is missing, but if it’s the case, i don’t know wich one. I tried to import the pickingInfo module, but it doesn’t make a difference. I think this one might be loaded as a side effect somewhere.

Also, my mesh was imported from Blender, so i might need to set some properties on it.
It’s basically the first time i use this framework, so i don’t know much. Feel free to ask for more context if it can help the diagnostic

2

Hi.

My first thought (and I might be very wrong, or you already done this). is to try to set isPickable to true. so

mesh.isPickable = true;

3

Hi, thank you for your answer.
Yes, i already checked that. I did not have to explicitely set it to true though, because it was true already once deserialized from the ImportMeshAsync call

4

Can you repro your problem in the playground? It could be useful to see it live

5

The problem came from the imported mesh : there were not one but two meshes in the file. I was working with the wrong one, which was invisible. :woozy_face:
I think it was the default object loaded in the new project template in Blender. I deleted it in Blender though. I’ll look into this more.

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