Intersects Method (IGeometryEngine)

In This Topic

Returns true if geometry1 and geometry2 intersect.

Syntax

Visual Basic (Declaration)
C#

Function Intersects( _
   ByVal geometry1 As Geometry, _
   ByVal geometry2 As Geometry _
) As Boolean

bool Intersects( 
   Geometry geometry1,
   Geometry geometry2
)

Parameters

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

Return Value

True if the two geometries intersect.

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 intersect if they have at least one point in common. Equivalent to not Disjoint.

Example

Intersection between two Polylines

{
  // determine intersection between two polylines

  List<MapPoint> pts =
  [
    MapPointBuilderEx.CreateMapPoint(1.0, 1.0),
  MapPointBuilderEx.CreateMapPoint(3.0, 3.0),
  MapPointBuilderEx.CreateMapPoint(5.0, 1.0),
];

  Polyline line1 = PolylineBuilderEx.CreatePolyline(pts);

  List<MapPoint> pts2 =
  [
    MapPointBuilderEx.CreateMapPoint(1.0, 3.0),
  MapPointBuilderEx.CreateMapPoint(3.0, 1.0),
  MapPointBuilderEx.CreateMapPoint(5.0, 3.0),
];

  Polyline line2 = PolylineBuilderEx.CreatePolyline(pts2);

  bool intersects = GeometryEngine.Instance.Intersects(line1, line2);    // intersects = true
  Geometry g = GeometryEngine.Instance.Intersection(line1, line2, GeometryDimensionType.EsriGeometry0Dimension);
  Multipoint resultMultipoint = g as Multipoint;

  // result is a multiPoint that intersects at (2,2) and (4,2)
}

Requirements

Target Platforms: Windows 11 Home, Pro, Enterprise (64 bit)

ArcGIS Pro version: 3.0 or higher.

Reference

IGeometryEngine Interface
IGeometryEngine Members

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