These functions calculate points along the perimeter (or length) of a grob.
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A grob object.
Whether we are asking for points along the perimeter of a closed object or points along the length of an open object. Some grobs (e.g., X-splines) can do both.
Arguments to be used by methods.
A set of grob coordinates (as generated by
Custom grobs can write their own methods for
emptyCoords object can be used to return a "null"
result (e.g., when asking for
closed coordinates on an
open line) and the
isEmptyCoords function can be used to check for
A list of lists with components
All locations are in inches relative to the current grid viewport.
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