PolyUtils class

Properties

hashCode → int

The hash code for this object.

no setter, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited

Static Methods

containsLocationPoly(Point<num> point, List<Point<num>> polygon) → bool

Checks if point is inside polygon

decode(String encodedPath) → List<Point<num>>

Decodes an encoded path string into a sequence of LatLngs.

distanceToLine(Point<num> p, Point<num> start, Point<num> end) → double

Computes the distance on the sphere between the point p and the line segment start to end.

encode(List<Point<num>> path) → String

Encodes a sequence of LatLngs into an encoded path string.

isClosedPolygon(List<Point<num>> poly) → bool

Returns true if the provided list of points is a closed polygon (i.e., the first and last points are the same), and false if it is not

isLocationOnEdge(Point<num> point, List<Point<num>> polygon, bool geodesic) → bool

Same as {@link #isLocationOnEdge(Point, List, bool, double)} with a default tolerance of 0.1 meters.

isLocationOnEdgeTolerance(Point<num> point, List<Point<num>> polygon, bool geodesic, double tolerance) → bool

Computes whether the given point lies on or near the edge of a polygon, within a specified tolerance in meters. The polygon edge is composed of great circle segments if geodesic is true, and of Rhumb segments otherwise. The polygon edge is implicitly closed -- the closing segment between the first point and the last point is included.

isLocationOnPath(Point<num> point, List<Point<num>> polyline, bool geodesic) → bool

Same as {@link #isLocationOnPath(Point, List, bool, double)}

isLocationOnPathTolerance(Point<num> point, List<Point<num>> polyline, bool geodesic, double tolerance) → bool

Computes whether the given point lies on or near a polyline, within a specified tolerance in meters. The polyline is composed of great circle segments if geodesic is true, and of Rhumb segments otherwise. The polyline is not closed -- the closing segment between the first point and the last point is not included.

locationIndexOnEdgeOrPath(Point<num> point, List<Point<num>> poly, bool closed, bool geodesic, double toleranceEarth) → int

Computes whether (and where) a given point lies on or near a polyline, within a specified tolerance. If closed, the closing segment between the last and first points of the polyline is not considered.

locationIndexOnPath(Point<num> point, List<Point<num>> polyline, bool geodesic) → int

Same as {@link #locationIndexOnPath(Point, List, bool, double)}

locationIndexOnPathTolerance(Point<num> point, List<Point<num>> poly, bool geodesic, double tolerance) → int

Computes whether (and where) a given point lies on or near a polyline, within a specified tolerance. The polyline is not closed -- the closing segment between the first point and the last point is not included.

simplify(List<Point<num>> poly, double tolerance) → List<Point<num>>

Simplifies the given poly (polyline or polygon) using the Douglas-Peucker decimation algorithm. Increasing the tolerance will result in fewer points in the simplified polyline or polygon.