Balls rolling around a heightmap ground with physics

[bigrig]

And here’s a picked point (snap to grid) on the heightmap. Also useful to add to the collection.

Babylon.js Playground

Thanks to this thread:

Snap grid on a plane

EDIT: skip this one, solution below I think we could do it just by hiding the native cursor and use a 3d simulated cursor by doing some magic in the background. Let me think about it for a while I did something similar here (the yellow is native cursor, the uggly duck is the simulated one) [BabylonJS Scene Explorer and Inspector in 3D with "two way event binding"]