offset

photonforge.offset(operand, distance, round_joins=False)

Dilate or erode a set of polygons.

Parameters:

• operand – Polygon, Path, Reference, Component or sequence of those. All polygons are joined before the operation.

• distance – Amount to dilate (positive) or erode (negative).

• round_joins – If set, substitute convex angles with round joins.

Returns:

List of resulting polygons.

Examples

>>> horizontal = Rectangle(center=(0, 0), size=(11, 2))
>>> vertical = Rectangle(center=(0, 0), size=(2, 11))
>>> outer_cross = offset([horizontal, vertical], 1, round_joins=True)
>>> inner_cross = offset([horizontal, vertical], -0.5)
>>> len(outer_cross), len(inner_cross)
(1, 1)