Package pygeodesy :: Module booleans

Module booleans

Boolean operations on composite polygons and clips.

Classes BooleanFHP and BooleanGH are composites and provide boolean operations intersection, difference, reverse-difference, sum and union.

Note: A clip is defined as a single, usually closed polygon, a composite is a collection of one or more clips.

See Also: Forster-Hormann-Popa and Greiner-Hormann.

Version: 24.11.07

Classes
	_LatLonBool (INTERNAL) Base class for LatLonFHP and LatLonGH.
	LatLonFHP A point or intersection in a BooleanFHP clip or composite.
	LatLonGH A point or intersection in a BooleanGH clip or composite.
	_Clip (INTERNAL) A doubly-linked list representing a closed polygon of LatLonFHP or LatLonGH points, duplicates and intersections with other clips.
	_CompositeBase (INTERNAL) Base class for BooleanFHP and BooleanGH (`_CompositeFHP` and `_CompositeGH`).
	_CompositeFHP (INTERNAL) A list of clips representing a composite of LatLonFHP points, duplicates and intersections with an other composite.
	_CompositeGH (INTERNAL) A list of clips representing a composite of LatLonGH points, duplicates and intersections with an other composite.
	_BooleanBase
	BooleanFHP Composite class providing boolean operations between two composites using Forster-Hormann-Popa's C++ implementation, transcoded to pure Python.
	BooleanGH Composite class providing boolean operations between two composites using the Greiner-Hormann algorithm and Correia's implementation, modified and extended.

Functions

isBoolean(obj)
Check for Boolean composites.

Variables
	__all__ = `_ALL_LAZY.booleans`

Function Details

isBoolean (obj)

Check for Boolean composites.

Arguments:

obj - The object (any type).

Returns:

True if obj is BooleanFHP, BooleanGH or some other composite, False otherwise.