GLMapVectorLine

Objective-C


@interface GLMapVectorLine : GLMapVectorObject

Swift

class GLMapVectorLine : GLMapVectorObject

GLMapVectorLine is a bridge class, to work with GLMap internal representation of line and multiline.

  • Data previously loaded by -[GLMapVectorObject initWithMultiline:]

    Declaration

    Objective-C

    @property (readonly) NSArray<GLMapPointArray *> *_Nonnull lines;

    Swift

    var lines: [GLMapPointArray] { get }

  • Creates vector object with line

    Declaration

    Objective-C

    - (nonnull instancetype)initWithLine:(nonnull GLMapPointArray *)line;

    Swift

    init(line: GLMapPointArray)

    Parameters

    line

    line

  • Creates vector object with multiline

    Declaration

    Objective-C

    - (nonnull instancetype)initWithLines:
    (nonnull NSArray<GLMapPointArray *> *)lines;

    Swift

    init(lines: [GLMapPointArray])

    Parameters

    lines

    Multiline

  • Creates vector object with big circle line from start to end. Useful to display plane routes.

    Declaration

    Objective-C

    - (nonnull instancetype)initGeoStart:(GLMapGeoPoint)start
                                 end:(GLMapGeoPoint)end
                             quality:(double)quality;

    Swift

    init(geoStart start: GLMapGeoPoint, end: GLMapGeoPoint, quality: Double)

    Parameters

    start

    Start point
    end

    End point
    quality

    Maximum distance from point to line, used for simplification in Douglas Peucker algorithm. Units is map internal coordinates.

  • Find point at distance form start

    Declaration

    Objective-C

    - (GLMapPoint)pointAtLineDistance:(double)distance;

    Swift

    func point(atLineDistance distance: Double) -> GLMapPoint

    Parameters

    distance

    distance in meters

    Return Value

    point on line that is located at given distance

  • Finds nearest point of object to given point and returns line distance to it

    Declaration

    Objective-C

    - (double)lineDistanceToPoint:(GLMapPoint)point
                 nearestPoint:(nonnull GLMapPoint *)nearestPoint
                  maxDistance:(double)maxDistance;

    Swift

    func lineDistance(to point: GLMapPoint, nearestPoint: UnsafeMutablePointer<GLMapPoint>, maxDistance: Double) -> Double

    Parameters

    point

    Point to test
    nearestPoint

    nearest point on line
    maxDistance

    max distance from line in projected units

    Return Value

    line distance to point or NAN