normals unsmoothed after recompute

[Numa]

Hi there, 

After loading my mesh I apply a translation/rotation to the verts so I need to recompute the normals if I want the lighting to be accurate.

However it causes the normals to not be smoothed, am I doing it wrong?

BABYLON.Mesh.prototype.recomputeNormals = function ()
{
    var normals = [];
    var positions = this.getVerticesData(BABYLON.VertexBuffer.PositionKind);
    normals = this.getVerticesData(BABYLON.VertexBuffer.NormalKind);
    BABYLON.VertexData.ComputeNormals(positions, this.getIndices(), normals);
    this.setVerticesData(BABYLON.VertexBuffer.NormalKind, normals);
}

before recomputing the normals:

 

After:

thanks!

[JohnK]

Do you need to translate/rotate individual vertices rather than the mesh?

[Numa]

Yes I think I do.

I move submeshes around in my application based on external data and it's all contingent on each submesh having its origin at the center of its bounding box. However when I load a model, all submeshes have their origin at the center of the model (0, 0, 0) so I move the verts so that the center of the bounding box is 0,0,0, then I translate the mesh back to where it was. I use object.bakeTransformIntoVertices();

 

Is there a better way to achieve that?  

I'm not sure why I would lose the smoothing after recalculating, I move the whole thing at once, verts have the same relative positions.

[adam]

It looks like you might need to change the pivot point of your mesh.   Try using mesh.setPivotPoint:

https://github.com/BabylonJS/Babylon.js/blob/88931762d8200d6d74a7bbbc4e49673994ed6b82/src/Mesh/babylon.abstractMesh.ts#L1555

 

[Numa]

I just realized the problem is not at all what I thought it was, I will make a new post. Sorry about that, feel free to delete!

 

[adam]

For those of you following, this issue continues here: