Geometry Library

encoding namespace

google.maps.geometry.encoding namespace

Utilities for polyline encoding and decoding.

Library

geometry

Static Methods
decodePath	decodePath(encodedPath) Parameters:  encodedPath:  string Return Value:  Array<LatLng> Decodes an encoded path string into a sequence of LatLngs.
encodePath	encodePath(path) Parameters:  path:  Array<LatLng>|MVCArray<LatLng> Return Value:  string Encodes a sequence of LatLngs into an encoded path string.

spherical namespace

google.maps.geometry.spherical namespace

Utility functions for computing geodesic angles, distances and areas. The default radius is Earth's radius of 6378137 meters.

Library

geometry

Static Methods
computeArea	computeArea(path[, radius]) Parameters:  path:  Array<LatLng>|MVCArray<LatLng> radius (optional):  number Return Value:  number Returns the area of a closed path. The computed area uses the same units as the radius. The radius defaults to the Earth's radius in meters, in which case the area is in square meters.
computeDistanceBetween	computeDistanceBetween(from, to[, radius]) Parameters:  from:  LatLng to:  LatLng radius (optional):  number Return Value:  number Returns the distance, in meters, between two LatLngs. You can optionally specify a custom radius. The radius defaults to the radius of the Earth.
computeHeading	computeHeading(from, to) Parameters:  from:  LatLng to:  LatLng Return Value:  number Returns the heading from one LatLng to another LatLng. Headings are expressed in degrees clockwise from North within the range [-180,180).
computeLength	computeLength(path[, radius]) Parameters:  path:  Array<LatLng>|MVCArray<LatLng> radius (optional):  number Return Value:  number Returns the length of the given path.
computeOffset	computeOffset(from, distance, heading[, radius]) Parameters:  from:  LatLng distance:  number heading:  number radius (optional):  number Return Value:  LatLng Returns the LatLng resulting from moving a distance from an origin in the specified heading (expressed in degrees clockwise from north).
computeOffsetOrigin	computeOffsetOrigin(to, distance, heading[, radius]) Parameters:  to:  LatLng distance:  number heading:  number radius (optional):  number Return Value:  LatLng Returns the location of origin when provided with a LatLng destination, meters travelled and original heading. Headings are expressed in degrees clockwise from North. This function returns null when no solution is available.
computeSignedArea	computeSignedArea(loop[, radius]) Parameters:  loop:  Array<LatLng>|MVCArray<LatLng> radius (optional):  number Return Value:  number Returns the signed area of a closed path. The signed area may be used to determine the orientation of the path. The computed area uses the same units as the radius. The radius defaults to the Earth's radius in meters, in which case the area is in square meters.
interpolate	interpolate(from, to, fraction) Parameters:  from:  LatLng to:  LatLng fraction:  number Return Value:  LatLng Returns the LatLng which lies the given fraction of the way between the origin LatLng and the destination LatLng.

poly namespace

google.maps.geometry.poly namespace

Utility functions for computations involving polygons and polylines.

Library

geometry

Static Methods
containsLocation	containsLocation(point, polygon) Parameters:  point:  LatLng polygon:  Polygon Return Value:  boolean Computes whether the given point lies inside the specified polygon.
isLocationOnEdge	isLocationOnEdge(point, poly[, tolerance]) Parameters:  point:  LatLng poly:  Polygon|Polyline tolerance (optional):  number Return Value:  boolean Computes whether the given point lies on or near to a polyline, or the edge of a polygon, within a specified tolerance. Returns true when the difference between the latitude and longitude of the supplied point, and the closest point on the edge, is less than the tolerance. The tolerance defaults to 10^-9 degrees.