Placing objects on the plane to minimize material use

[zerjillo]

Difficult task but very useful. Some notes:

• Allow to make use of inner space in objects with holes
• Place objects maintaining at least some amount of space among them (the dynamic offset capability could be used to easy computations).
• Important to be able to know if path intersect or if a path is inside another.
• How to measure the best exploited plan? Maybe some metric with quadrants at different scales.