polygon1.polygonSub(polygon2) → polygon
Use polygon2
to “punch out” a hole in polygon1
. polygon2
must be completely contained within polygon1
and must have no holes itself (it must not be the output of polygonSub
itself).
Example: Define a polygon with a hole punched in it.
var outerPolygon = r.polygon(
[-122.4,37.7],
[-122.4,37.3],
[-121.8,37.3],
[-121.8,37.7]
);
var innerPolygon = r.polygon(
[-122.3,37.4],
[-122.3,37.6],
[-122.0,37.6],
[-122.0,37.4]
);
outerPolygon.polygonSub(innerPolygon).run(conn, callback);
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