raygeo.geo.algo.offset

Polygon offsetting operations for geometry data.

Provides concentric inward offset generation for adaptive clearing and pocketing toolpath generation.

Functions

concentric_offsets()

concentric_offsets(
    geom: Geometry,
    step: float,
    max_passes: int = 10,
    min_area: float = 1,
) -> list[Geometry]

Generate concentric inward offsets of a geometry.

Each successive offset shrinks the boundary by step. Stops early when the enclosed area drops below min_area or max_passes is reached. Returns offsets outermost-first.

Parameter	Type	Description
geom	Geometry	A closed geometry.
step	float	Inward offset distance per pass.
max_passes	int = 10	Maximum number of offset passes (default 10).
min_area	float = 1	Minimum area to stop at (default 1.0).
Returns	list[Geometry]	List of offset geometries, outermost first.
Complexity		O(n * p) time, O(n) space where n is the number of contour vertices and p the number of passes

Concentric inward offsets for adaptive clearing / pocketing