Shapely like API for exterior

[mindflayer]

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[Copilot]

Pull request overview

This PR updates the ToGo library to provide a more Shapely-compatible API by converting several methods to properties. Specifically, it changes Poly.exterior from a method to a property, and converts several Ring class methods (area, perimeter/length, is_convex, is_clockwise) to properties. The PR also adds a new Poly.length property for perimeter calculation.

• Converted Poly.exterior() method to exterior property for Shapely compatibility
• Converted Ring methods (area, perimeter, is_convex, is_clockwise) to properties, with perimeter renamed to length for Shapely compatibility
• Added new Poly.length property that returns the perimeter of the polygon's exterior ring

Reviewed changes

Copilot reviewed 11 out of 11 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
togo.pyx	Converted Poly.exterior, Ring.area, Ring.perimeter (renamed to length), Ring.is_convex, and Ring.is_clockwise from methods to properties; added new Poly.length property; updated __geo_interface__ to use property access; attempted to fix error message string formatting (but has bug)
tests/test_shapely_api.py	Updated test calls to use exterior as property instead of method
tests/test_ring.py	Updated test calls to use Ring properties (area, length, is_convex, is_clockwise) instead of methods
tests/test_poly.py	Updated test calls to use exterior as property and Ring properties instead of methods
tests/test_geometry.py	Updated test calls to use exterior as property instead of method
examples/shapely_api_demo.py	Updated example to use exterior as property instead of method
benchmarks/bench_shapely_vs_togo.py	Updated benchmark to use exterior.length property instead of exterior().perimeter() method
SHAPELY_API.md	Updated documentation to show exterior as property instead of method, but comment incorrectly indicates it's a method
README.md	Updated some examples to use area and length properties, but is_convex() and is_clockwise() still shown as method calls instead of properties
QUICK_REFERENCE.md	Updated documentation to show exterior as property instead of method
setup.py	Added compiler flag -Wno-int-in-bool-context to suppress Cython-generated code warnings

Comments suppressed due to low confidence (1)

README.md:182

• The is_convex and is_clockwise properties should be accessed without parentheses (as properties, not method calls) to be consistent with the changes made to the Ring class in togo.pyx where these were converted from methods to properties with the @property decorator.

print(f"Is convex: {ring.is_convex()}")
print(f"Is clockwise: {ring.is_clockwise()}")