polygon

A Polygon is a list of up to 250 linear rings which represent the shape of a geofence. This list must include 1 exterior ring (representing the outer perimeter of the geofence), and can optionally include up to 249 interior rings (representing polygonal spaces within the perimeter, which are excluded from the geofence area).

A linear ring is an array of 4 or more vertices, where the first and last vertex are the same (to form a closed boundary). Each vertex is a 2-dimensional point represented as an array of doubles of length 2: [longitude, latitude].

Each linear ring is represented as an array of arrays of doubles ([[longitude, latitude], [longitude, latitude], ...]). The vertices for the exterior ring must be listed in counter-clockwise sequence. Vertices for all interior rings must be listed in clockwise sequence.

The list of linear rings that describe the entire Polygon is represented as an array of arrays of arrays of doubles ([[[longitude, latitude], [longitude, latitude], ...], [[longitude, latitude], [longitude, latitude], ...], ...]). The exterior ring must be listed first, before any interior rings.

The following additional requirements and limitations apply to geometries defined using the Polygon parameter:

• The entire Polygon must consist of no more than 1,000 vertices, including all vertices from the exterior ring and all interior rings.

• Rings must not touch or cross each other.

• All interior rings must be fully contained within the exterior ring.

• Interior rings must not contain other interior rings.

• No ring is permitted to intersect itself.