MapLine Class

The class used to draw a line on a map.

Namespace: DevExpress.XtraMap

Assembly: DevExpress.XtraMap.v20.2.dll

NuGet Package: DevExpress.Win.Map

Declaration

C#

public class MapLine :
    MapShape,
    ISupportCoordPoints,
    ISupportIntermediatePoints,
    IEditableItem,
    IMapLineCore

VB.NET

Public Class MapLine
    Inherits MapShape
    Implements ISupportCoordPoints,
               ISupportIntermediatePoints,
               IEditableItem,
               IMapLineCore

Related API Members

The following members return MapLine objects:

• MapHitInfo.MapLine

Remarks

The following image shows an example of a map line object.

Note that, a map shape should fulfill the following condition to cross the 180th meridian: one or several points’ longitudes should exceed the 180 (-180) limit:

C#

MapPolygon polygon = new MapPolygon();
polygon.Points.Add(new GeoPoint(10, -170));
polygon.Points.Add(new GeoPoint(10, 170));
polygon.Points.Add(new GeoPoint(-10, 170));
polygon.Points.Add(new GeoPoint(-10, -170));
vectorItemStorage.Items.Add(polygon);

// Point longitudes enclose the 180 meridian.
MapPolygon polygonCross180 = New MapPolygon();
polygonCross180.Fill = Color.Orange;
polygonCross180.Points.Add(new GeoPoint(30, 190));
polygonCross180.Points.Add(new GeoPoint(30, 170));
polygonCross180.Points.Add(new GeoPoint(20, 170));
polygonCross180.Points.Add(new GeoPoint(20, 190));
vectorItemStorage.Items.Add(polygon180);

VB.NET

Dim polygon = New MapPolygon
polygon.Points.Add(New GeoPoint(10, -170))
polygon.Points.Add(New GeoPoint(10, 170))
polygon.Points.Add(New GeoPoint(-10, 170))
polygon.Points.Add(New GeoPoint(-10, -170))
vectorItemStorage.Items.Add(polygon)

' Point longitudes enclose the 180 meridian.
Dim polygonCross180 = New MapPolygon
polygonCross180.Fill = Color.Orange
polygonCross180.Points.Add(New GeoPoint(30, 190))
polygonCross180.Points.Add(New GeoPoint(30, 170))
polygonCross180.Points.Add(New GeoPoint(20, 170))
polygonCross180.Points.Add(New GeoPoint(20, 190))
vectorItemStorage.Items.Add(polygonCross180)

The code above produces the following image:

Example

View Example

Form1.cs

ItemStorage.Items.Add(new MapLine { Point1 = new GeoPoint(-30, 20), Point2 = new GeoPoint(-35, 25), Stroke = Color.Red, StrokeWidth = 4 });

Form1.vb

ItemStorage.Items.Add(New MapLine With {.Point1 = New GeoPoint(-30, 20), .Point2 = New GeoPoint(-35, 25), .Stroke = Color.Red, .StrokeWidth = 4})

Implements

IColorizerElement

IEditableItem

Inheritance

Object

MapItem

MapShape

MapLine