I can move, rotate and scale meshes as long as they are not yet added to the ViewportLayout. After they are added, no action is taken. When I manipulate a Quad, it works fine. What can I do? Alberto Bencivenni January 02, 2019 16:12 Follow Complex objects (everything except from point and lines) need to be regenerated after transformations, try adding a call to ViewportLayout.Entities.Regen().