Using the MouseArea3D linked to gizmo to manage the drag leads to
slight unwanted drift on the drag plane, as it moves with the gizmo.
Fixed by using a helper MouseArea3D to calculate drag vector.
Helper area's transform is set at mouse press time and is not changed
during the drag.
Change-Id: I50d3f738277bd34005c977423d114abc8dbed520
Fixes: QDS-1312
Reviewed-by: Mahmoud Badri <mahmoud.badri@qt.io>
Reviewed-by: Thomas Hartmann <thomas.hartmann@qt.io>
ScaleGizmo allows scaling in the direction of local or global axes,
as well as uniform scaling. Any scale component cannot be made
negative with ScaleGizmo.
Change-Id: I9b98d9593e07ded340178b07b73fa1b72421ba20
Fixes: QDS-1195
Reviewed-by: Thomas Hartmann <thomas.hartmann@qt.io>
Reviewed-by: Mahmoud Badri <mahmoud.badri@qt.io>
