Iterates through verb array, and associated Point array and conic weight.
Provides options to treat open contours as closed, and to ignore
degenerate data.
Path contain geometry. Path may be empty, or contain one or more verbs that
outline a figure. Path always starts with a move verb to a Cartesian coordinate,
and may be followed by additional verbs that add lines or curves.
Adding a close verb makes the geometry into a continuous loop, a closed contour.
Path may contain any number of contours, each beginning with a move verb.