Skip to main content

MapPolygon Class

The class used to draw a polygon on a map.

Namespace: DevExpress.XtraMap

Assembly: DevExpress.XtraMap.v24.1.dll

NuGet Package: DevExpress.Win.Map

Declaration

public class MapPolygon :
    MapShape,
    ISupportCoordPoints,
    IPolygonCore,
    IPointContainerCore,
    IEditableItem,
    ISimplifiableItem

The following members return MapPolygon objects:

Remarks

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

MapPolygonExample

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:

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);

The code above produces the following image:

map-control__cross-180th-meridian

Example

View Example

var polygon = new MapPolygon();
polygon.Points.AddRange(new GeoPoint[] {
    new GeoPoint(70,80),
    new GeoPoint(75,90),
    new GeoPoint(75,130)
});
ItemStorage.Items.Add(polygon);

Inheritance

See Also