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This document is archived and information here might be outdated. Recommended version. |
ITopologicalOperator.Clip Method (ArcObjects .NET 10.8 SDK)
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This document is archived and information here might be outdated. Recommended version. |
Constructs the intersection of this geometry and the specified envelope.
[Visual Basic .NET] Public Sub Clip ( _ ByVal clipperEnvelope As IEnvelope _ )
[C#] public void Clip ( IEnvelope clipperEnvelope );
[C++]
HRESULT Clip(
IEnvelope* clipperEnvelope
);
[C++] Parameters clipperEnvelope
clipperEnvelope is a parameter of type IEnvelope*
The Clip method clips the geometry with the input envelope.
Use QueryClipped or QueryClippedDense methods to send the results to a different polygon.
ITopologicalOperator methods must be applied on high-level geometries only. High-Level geometries are point, multipoint, polyline and polygon. To use this method with low-level geometries such as segments (Line, Circular Arc, Elliptic Arc, Bézier Curve), paths or rings, they must be wrapped into high-level geometries types.
//The following code shows to wrap a line segment into a polyline in C#
//Assume a line (line1 as ILine) is already created
object obj = Type.Missing;
ISegmentCollection segCollection = new PolylineClass() as ISegmentCollection;
segCollection.AddSegment((ISegment)line1, ref obj, ref obj);
//Set the spatial reference on the new polyline
//The spatial reference is not transfered automatically from the segments
IGeometry geom = segCollection as IGeometry;
geom.SpatialReference = spatialRef;
//Can now be used with ITopologicalOperator methods