[solved] Problems with material of a cloned mesh loaded with obj loader

[Janx]

Hi,

I want to clone meshes that I load with the obj loader. The problem seems to be that the material is assigned somewhat later, so when I clone the mesh directly in the callback from the SceneLoader.ImportMesh function, it has no material. If I make another clone from the very same instance some time later, it has material. For example this would lead to no material in the clone:

BABYLON.SceneLoader.ImportMesh("", this.serverUrl, encodeURIComponent(fileName + ".obj"),
  this.scene, (mesh) => {
    meshContainer = mesh.clone(name, undefined, false);
    resolve(meshContainer);
  }

while this would:

BABYLON.SceneLoader.ImportMesh("", this.serverUrl, encodeURIComponent(fileName + ".obj"),
  this.scene, (mesh) => {
    setTimeout(() => {
      meshContainer = mesh.clone(name, undefined, false);
      resolve(meshContainer);
    }, 100);
  }

(It is wrapped inside a Promise)

Is this an expected behaviour? Is it possible to get the callback when everything is loaded completely?

Many thanks,
Cheers,
janx

Edited May 29, 2017 by Janx
solved

[brianzinn]

I get the same thing. If I apply a material after the first completion callback, those  materials are overwritten with blender materials, if the materials were exported from blender. I have seen other posts where people were waiting for second callback, but I was only getting one and materials were not ready.

[Gijs]

It's expected behavior:

I don't know what the best option is to get a callback

[Vousk-prod.]

Try putting your code in scene.executeWhenReady

BABYLON.SceneLoader.ImportMesh("", this.serverUrl, encodeURIComponent(fileName + ".obj"), this.scene, (mesh) => {
    scene.executeWhenReady( function() {
        meshContainer = mesh.clone(name, undefined, false);
        resolve(meshContainer);
    });
});

(code needs to be adapted to be able to reach scene, mesh, etc)

[Janx]

Thanks @Vousk-prod.. Works like a charm.