Thanks! Your suggestion is very helpful！
When I use the sphere as Gizmo, it can’t adapt to position when mousewheel。
so I dynamic scale the sphere’s size.
And I edit one sphere( the bottom one) in the scene, and the code:
https://playground.babylonjs.com/#S3FFNK#3
and some of the code is from the forum or other demos and some code I don’t know why, maybe it is not the correct way, but I think it can meet the needs of my boss。
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