Rectangle Position in MouseControlUtil.addSelectionRectangleGesture incorrect

[IARI]

The Bug described here was first also described in this comment on a stackoverflow answer which suggests the use of MouseControlUtil.addSelectionRectangleGesture:

Whenever I call the function with the final Parent root argument being some Pane within a Scene, the rectangle position is incorrect:

The reason to me seems to be in the performDragBegin method, MouseControlUtil.java L385-L386
The initial position is obtained from the scene-absolute coordinates, but the rectangle is attached to an element down in the hierarchy of the scene tree - that does not seem correct and i suspect it is the cause of this problem.

Sidenote:
from the design of this peace of te code, it seems to be intended in a way, that the final Parent root argument is in fact - as in this example - down in the hierarchy of the scene tree.

I am aware that this is experimental code, so I am submitting this issue, so this can be fixed.

[tbee]

As you mention yourself, labs is our sandbox and any code in there may be abandoned. I'll see if the owner still is supporting it.

[miho]

The MouseControlUtil does only compute the scaling (LocalToSceneTransform) but it ignores the necessary translation. In VWorkflows we do the necessary translation: See lines 408 - 445.