I get that producing a valid shape given an arbitrary number of constraints is not a trivial problem; however, I cannot think of a single instance in which I have wanted the solution to be "invert some of the part so the edge lines cross". I would much prefer the Big Red Screen Of Impossibility.

Is there any way to set a constraint (global, groupwise, or even per-pair) to stop SolveSpace suggesting crossing lines as a solution? It appears to really, really love making those twists and resist them being undone.

Thanks!