Disjoint Method (GeometryEngine)

In This Topic

Returns true if and are disjoint.

Syntax

C#
Visual Basic (Declaration)

public bool Disjoint( 
   Geometry geometry1,
   Geometry geometry2
)

Public Function Disjoint( _
   ByVal geometry1 As Geometry, _
   ByVal geometry2 As Geometry _
) As Boolean

Parameters

geometry1: The base geometry.
geometry2: The comparison geometry.

Return Value

True if geometry1 and geometry2 are disjoint.

Exceptions

Exception	Description
System.ArgumentNullException	Either geometry1 or geometry2 or both are null.
System.NotImplementedException	The method is not implemented for GeometryBag.
System.InvalidOperationException	Incompatible spatial references between the input geometries.

Remarks

Two geometries are disjoint if they don't have any points in common. Equivalent to not Intersects.

GeometryEngine Disjoint

Example

Determine if two Geometries are disjoint

//
// pt on pt
//

MapPoint pt = MapPointBuilderEx.CreateMapPoint(1.0, 1.0);
MapPoint pt2 = MapPointBuilderEx.CreateMapPoint(2.0, 2.5);

bool disjoint = GeometryEngine.Instance.Disjoint(pt, pt2);       // result is true

MultipointBuilderEx mpb = new MultipointBuilderEx();
mpb.AddPoint(pt);
mpb.AddPoint(pt2);
Multipoint multiPoint = mpb.ToGeometry();

disjoint = GeometryEngine.Instance.Disjoint(multiPoint, pt);     // result is false

// 
// pt and line
// 

List<MapPoint> list = new List<MapPoint>();
list.Add(MapPointBuilderEx.CreateMapPoint(1.0, 1.0));
list.Add(MapPointBuilderEx.CreateMapPoint(3.0, 3.0));
list.Add(MapPointBuilderEx.CreateMapPoint(5.0, 1.0));

Polyline line1 = PolylineBuilderEx.CreatePolyline(list);
disjoint = GeometryEngine.Instance.Disjoint(line1, pt2);       // result is true

disjoint = GeometryEngine.Instance.Disjoint(pt2, line1);       // result is true

// end pt of line
disjoint = GeometryEngine.Instance.Disjoint(line1, pt);        // result is false

//
// pt and polygon
//
List<MapPoint> polyPts = new List<MapPoint>();
polyPts.Add(MapPointBuilderEx.CreateMapPoint(3.0, 2.0));
polyPts.Add(MapPointBuilderEx.CreateMapPoint(3.0, 6.0));
polyPts.Add(MapPointBuilderEx.CreateMapPoint(6.0, 6.0));
polyPts.Add(MapPointBuilderEx.CreateMapPoint(6.0, 2.0));

Polygon poly1 = PolygonBuilderEx.CreatePolygon(polyPts);
disjoint = GeometryEngine.Instance.Disjoint(poly1, pt);          // result is true
disjoint = GeometryEngine.Instance.Disjoint(pt, poly1);          // result is true

// 
// line and line
//

List<MapPoint> list2 = new List<MapPoint>();
list2.Add(MapPointBuilderEx.CreateMapPoint(1.0, 3.0));
list2.Add(MapPointBuilderEx.CreateMapPoint(3.0, 1.0));
list2.Add(MapPointBuilderEx.CreateMapPoint(5.0, 3.0));

Polyline line2 = PolylineBuilderEx.CreatePolyline(list2);
disjoint = GeometryEngine.Instance.Disjoint(line1, line2);         // result is false

//
// line and polygon
//
disjoint = GeometryEngine.Instance.Disjoint(poly1, line1);         // result is false
disjoint = GeometryEngine.Instance.Disjoint(line1, poly1);         // result is false

//
// polygon and polygon
//
Envelope env = EnvelopeBuilderEx.CreateEnvelope(MapPointBuilderEx.CreateMapPoint(1.0, 1.0), MapPointBuilderEx.CreateMapPoint(4, 4));
Polygon poly2 = PolygonBuilderEx.CreatePolygon(env);

disjoint = GeometryEngine.Instance.Disjoint(poly1, poly2);         // result is false


// disjoint3D

SpatialReference sr = SpatialReferences.WGS84;

MapPoint pt3D_1 = MapPointBuilderEx.CreateMapPoint(1, 1, 1, sr);
MapPoint pt3D_2 = MapPointBuilderEx.CreateMapPoint(2, 2, 2, sr);
MapPoint pt3D_3 = MapPointBuilderEx.CreateMapPoint(1, 1, 2, sr);

MultipointBuilderEx mpbEx = new MultipointBuilderEx();
mpbEx.AddPoint(pt3D_1);
mpbEx.AddPoint(pt3D_2);
mpbEx.HasZ = true;

multiPoint = mpbEx.ToGeometry();
disjoint = GeometryEngine.Instance.Disjoint3D(multiPoint, pt3D_2);     // disjoint = false
disjoint = GeometryEngine.Instance.Disjoint3D(multiPoint, pt3D_3);     // disjoint = true

Requirements

Target Platforms: Windows 11, Windows 10

ArcGIS Pro version: 3 or higher.

Reference

GeometryEngine Class
GeometryEngine Members

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