Node::from_polygons infinite regression over flowing the stack

[malongo03]

Hi, I've been creating perfectly valid frustums with frustum_pnt, but when I attempt to do any Boolean commands with them, such as intersections and unions and differences, I inevitably get stack overflows.

This seems to be because the first part of the operation, the from_polygons copy operation, is infinite regressing in the .build() command.

I'd be happy to send my code and stack trace over, but I'm getting this bug extremely reliably.