All object intersections which make sense are implemented

[kirchner]

Right now we can only intersect axes and circles. We should at least have also these combinations

• axis and curve
• circle and curve
• curve and curve

This is all part of the implementation of Pattern.computePoint2d. Also Pattern.whichSize should be updated accordingly.

There are some usefull resources in https://medium.com/@all2one/intersecting-two-splines-70a1d901c446 which might be helpful.