PolylineSimplifier

public class PolylineSimplifier

extension PolylineSimplifier: NativeBase

extension PolylineSimplifier: Hashable

PolylineSimplifier helps to reduce the number of points in the polyline by removing redundant elements using Douglas–Peucker algorithm, so that result stays within PolylineSimplifier.Options.

Typical use case is to perform input preparation step before invoking computationally heavy API. Such API have an upper limit on the input collection size and is subject to reduced performance when collection is huge. Examples of such API are:

TrafficEngine methods which accept a GeoCorridor;
RoutePrefetcher.prefetchGeoCorridor.

init()
Creates a new instance of PolylineSimplifier.

Throws
InstantiationError Indicates what went wrong when the instantiation was attempted.
Declaration
Swift

public init() throws
Options
Controls the strategy of PolylineSimplifier.simplify(...) when reducing a size of polyline.
See more
Declaration
Swift

public struct Options


                    
                    
                    simplify(polyline:simplificationParameters:completion:)

Reduces the number of points in the input polyline. Does this by removing points which are not significant according to the passed PolylineSimplifier.Options. Simplification process is performed on the device without connecting to the network and is computationally intensive.

Declaration

Swift

public func simplify(polyline: [GeoCoordinates], simplificationParameters: PolylineSimplifier.Options, completion: @escaping PolylineSimplificationCompletionHandler) -> TaskHandle

Parameters

`polyline`	Input polyline that should be reduced in size.
`simplificationParameters`	Strategy, that controls the behavior of the underlying algorithm.
`completion`	Callback, which will be invoked on the main thread, when operation is finished.

Return Value

Controls an asynchronous operation.