Return the inversion which swaps two given circles.
inversionSwappingTwoCircles(circ1, circ2, positive = TRUE)An Inversion object, which maps circ1 to circ2
and circ2 to circ1, except in the case when circ1
and circ2 are congruent and tangent: in this case a Reflection
object is returned (a reflection is an inversion on a line).
Circle objects
logical, whether the sign of the desired inversion power must be positive or negative