GoogleMaps Framework Reference
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GMSGeometryArea
extern double GMSGeometryArea(GMSPath *_Nonnull path)
Returns the area of a geodesic polygon defined by path on Earth.
The “inside” of the polygon is defined as not containing the South pole.
If path is not closed, it is implicitly treated as a closed path nevertheless and the result is
the same.
All coordinates of the path must be valid.
The polygon must be simple (not self-overlapping) and may be concave.
If any segment of the path is a pair of antipodal points, the result is undefined – because two
antipodal points do not form a unique great circle segment on the sphere.
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Last updated 2025-08-27 UTC.
[null,null,["Last updated 2025-08-27 UTC."],[],["This function, `GMSGeometryArea`, calculates the area of a geodesic polygon on Earth defined by a given path. The polygon's interior is considered to exclude the South Pole. The input path is treated as closed even if it isn't. The polygon must be simple (non-self-intersecting), and all coordinates in the path must be valid. If the path contains antipodal points, the result is undefined. Concave polygons are acceptable.\n"],null,[]]
