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MultiCurve
A MultiCurve is a geometry collection composed of
Curve elements. MultiCurve is a non-instantiable class.
MultiCurve Properties
MultiCurve is a one-dimensional geometry.
MultiCurve is simple if and only if all of its elements are simple,
the only intersections between any two elements occur at points that are
on the boundaries of both elements.
MultiCurve boundary is obtained by applying the "mod 2 union
rule" (also known as the odd-even rule):
A point is in the boundary of a MultiCurve if it is in the
boundaries of an odd number of MultiCurve elements.
MultiCurve is closed if all of its elements are closed.
MultiCurve's boundary is always empty.