dymaptic.GeoBlazor.Core

dymaptic.GeoBlazor.Core.Components.Geometries

Polygon Class

A polygon contains an array of rings and a spatialReference.
ArcGIS Maps SDK for JavaScript

public class Polygon : dymaptic.GeoBlazor.Core.Components.Geometries.Geometry

Inheritance System.Object 🡒 Microsoft.AspNetCore.Components.ComponentBase 🡒 MapComponent 🡒 Geometry 🡒 Polygon

Derived
Circle

Constructors

Polygon() Constructor

Parameterless constructor for use as a Razor Component.

public Polygon();

Polygon(IReadOnlyList, SpatialReference, Point, Nullable, Nullable, Nullable) Constructor

Constructor for use in C# code. Use named parameters (e.g., item1: value1, item2: value2) to set properties in any order.

public Polygon(System.Collections.Generic.IReadOnlyList<dymaptic.GeoBlazor.Core.Model.MapPath> rings, dymaptic.GeoBlazor.Core.Components.SpatialReference? spatialReference=null, dymaptic.GeoBlazor.Core.Components.Geometries.Point? centroid=null, System.Nullable<bool> hasM=null, System.Nullable<bool> hasZ=null, System.Nullable<bool> isSelfIntersecting=null);

Parameters

rings System.Collections.Generic.IReadOnlyList<MapPath>

An array of rings.
ArcGIS Maps SDK for JavaScript

spatialReference SpatialReference

The spatial reference of the geometry.
default SpatialReference.WGS84 // wkid: 4326
ArcGIS Maps SDK for JavaScript

centroid Point

The centroid of the polygon.
ArcGIS Maps SDK for JavaScript

hasM System.Nullable<System.Boolean>

Indicates if the geometry has M values.
ArcGIS Maps SDK for JavaScript

hasZ System.Nullable<System.Boolean>

Indicates if the geometry has z-values (elevation).
ArcGIS Maps SDK for JavaScript

isSelfIntersecting System.Nullable<System.Boolean>

Checks to see if polygon rings cross each other and indicates if the polygon is
self-intersecting, which means the ring of the polygon crosses itself.
ArcGIS Maps SDK for JavaScript

Properties

Polygon.Centroid Property

The centroid of the polygon.
ArcGIS Maps SDK for JavaScript

public dymaptic.GeoBlazor.Core.Components.Geometries.Point? Centroid { get; set; }

Property Value

Point

Polygon.IsSelfIntersecting Property

Checks to see if polygon rings cross each other and indicates if the polygon is self-intersecting, which means the ring of the polygon crosses itself.
ArcGIS Maps SDK for JavaScript

public System.Nullable<bool> IsSelfIntersecting { get; set; }

Property Value

System.Nullable<System.Boolean>

Polygon.Rings Property

An array of MapPath rings.

public System.Collections.Generic.IReadOnlyList<dymaptic.GeoBlazor.Core.Model.MapPath> Rings { get; set; }

Property Value

System.Collections.Generic.IReadOnlyList<MapPath>

Polygon.Type Property

The Geometry “type”, used internally to render.

public override dymaptic.GeoBlazor.Core.Enums.GeometryType Type { get; }

Property Value

GeometryType

Methods

Polygon.AddRing(IReadOnlyCollection) Method

Adds a ring to the Polygon.
ArcGIS Maps SDK for JavaScript

public System.Threading.Tasks.Task<dymaptic.GeoBlazor.Core.Components.Geometries.Polygon?> AddRing(System.Collections.Generic.IReadOnlyCollection<dymaptic.GeoBlazor.Core.Components.Geometries.Point> points);

Parameters

points System.Collections.Generic.IReadOnlyCollection<Point>

A polygon ring. The first and last coordinates/points in the ring must be the same. This can either be defined as an array of Point geometries or an array of XY coordinates.

Returns

System.Threading.Tasks.Task<Polygon>

Polygon.Clone() Method

Returns a deep clone of the geometry.

public dymaptic.GeoBlazor.Core.Components.Geometries.Polygon Clone();

Returns

Polygon

Polygon.Contains(Point) Method

Checks on the client if the input point is inside the polygon.
ArcGIS Maps SDK for JavaScript

public System.Threading.Tasks.Task<System.Nullable<bool>> Contains(dymaptic.GeoBlazor.Core.Components.Geometries.Point point);

Parameters

point Point

The point to test whether it is contained within the testing polygon.

Returns

System.Threading.Tasks.Task<System.Nullable<System.Boolean>>

Polygon.GetCentroid() Method

Asynchronously retrieve the current value of the Centroid property.

public System.Threading.Tasks.Task<dymaptic.GeoBlazor.Core.Components.Geometries.Point?> GetCentroid();

Returns

System.Threading.Tasks.Task<Point>

Polygon.GetIsSelfIntersecting() Method

Asynchronously retrieve the current value of the IsSelfIntersecting property.

public System.Threading.Tasks.Task<System.Nullable<bool>> GetIsSelfIntersecting();

Returns

System.Threading.Tasks.Task<System.Nullable<System.Boolean>>

Polygon.GetPoint(int, int) Method

Returns a point specified by a ring and point in the path.
param pointIndex The index of the desired point within the ring.
ArcGIS Maps SDK for JavaScript

public System.Threading.Tasks.Task<dymaptic.GeoBlazor.Core.Components.Geometries.Point?> GetPoint(int ringIndex, int pointIndex);

Parameters

ringIndex System.Int32

The index of the ring containing the desired point.

pointIndex System.Int32

The index of the desired point within the ring.

Returns

System.Threading.Tasks.Task<Point>

Polygon.InsertPoint(int, int, Point) Method

Inserts a new point into the polygon.
param pointIndex The index of the point to insert within the ring.
ArcGIS Maps SDK for JavaScript

public System.Threading.Tasks.Task<dymaptic.GeoBlazor.Core.Components.Geometries.Polygon?> InsertPoint(int ringIndex, int pointIndex, dymaptic.GeoBlazor.Core.Components.Geometries.Point point);

Parameters

ringIndex System.Int32

The index of the ring in which to insert the point.

pointIndex System.Int32

The index of the point to insert within the ring.

point Point

The point to insert.

Returns

System.Threading.Tasks.Task<Polygon>

Polygon.IsClockwise(IReadOnlyCollection) Method

Checks if a Polygon ring is clockwise.
ArcGIS Maps SDK for JavaScript

public System.Threading.Tasks.Task<System.Nullable<bool>> IsClockwise(System.Collections.Generic.IReadOnlyCollection<dymaptic.GeoBlazor.Core.Components.Geometries.Point> ring);

Parameters

ring System.Collections.Generic.IReadOnlyCollection<Point>

A polygon ring. It can either be defined as an array of Point geometries or an array of XY coordinates.

Returns

System.Threading.Tasks.Task<System.Nullable<System.Boolean>>

Polygon.RemovePoint(int, int) Method

Removes a point from the polygon at the given pointIndex within the ring identified by ringIndex.
param pointIndex The index of the point to remove within the ring.
ArcGIS Maps SDK for JavaScript

public System.Threading.Tasks.Task<dymaptic.GeoBlazor.Core.Components.Geometries.Point?> RemovePoint(int ringIndex, int pointIndex);

Parameters

ringIndex System.Int32

The index of the ring containing the point to remove.

pointIndex System.Int32

The index of the point to remove within the ring.

Returns

System.Threading.Tasks.Task<Point>

Polygon.RemoveRing(int) Method

Removes a ring from the Polygon.
ArcGIS Maps SDK for JavaScript

public System.Threading.Tasks.Task<dymaptic.GeoBlazor.Core.Components.Geometries.Point[]?> RemoveRing(int index);

Parameters

index System.Int32

The index of the ring to remove.

Returns

System.Threading.Tasks.Task<Point[]>

Polygon.SetPoint(int, int, Point) Method

Updates a point in the polygon.
param pointIndex The index of the point to update within the ring.
ArcGIS Maps SDK for JavaScript

public System.Threading.Tasks.Task<dymaptic.GeoBlazor.Core.Components.Geometries.Polygon?> SetPoint(int ringIndex, int pointIndex, dymaptic.GeoBlazor.Core.Components.Geometries.Point point);

Parameters

ringIndex System.Int32

The index of the ring containing the point to update.

pointIndex System.Int32

The index of the point to update within the ring.

point Point

The new point geometry.

Returns

System.Threading.Tasks.Task<Polygon>