Element layer for all kind of cross component constraints

[ceremcem]

Understanding the Element concept and #76 led me to the point: Shouldn't all kind of cross component constraints (especially external geometry constraints) follow the Element concept?

What if an external geometry is modified heavily so the external geometry constraints are broken in the consumer Sketch? How do we fix them easily? I think the Element layer would be the answer.

[realthunder]

What if an external geometry is modified heavily so the external geometry constraints are broken in the consumer Sketch?

That actually happen quite often. To refactor Sketcher WB will require a lot of work. Right now, Sketch external geometry only support geometry inside the same coordinate space, and you have to use binder to bring in those from other coordinate space. And the binder can act like a poor man's Element, so to speak.