Pick mesh (get pick information)

Questions
1

I usually pick up models in these two ways，
One is by binding an actionManager to the mesh，
The other is to add a click event to the scene.

When the scene has a lot of mesh，
The latter seems to have a higher performance cost.

I want to get the mesh and triangle of the current click, and I want to get the best performance

2

If you have a lot of meshes integrating octrees will be a good approach, see Optimizing With Octrees | Babylon.js Documentation (babylonjs.com)

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