Click and drag to edit vertices of an extruded 3d shape

[Evgeni_Popov]

The PGs from @JohnK and @Raggar in this thread should help:

Drag (move) vertices of mesh

Here is a PG to place yellow box at vertex points https://playground.babylonjs.com/#I0TSSC#7 Note Lines 17 ---- Cat has been loaded with non- zero position and has been scaled, so any positioning of a yellow box will need to take this into account. Remember that positions are stored as with zero origin and a unit scaling. 47 ----- stored positions transformed before use to position yellow box. Note as you drag the yellow box the actual change in a vertex position may need scaling.