IsSimpleAsFeature Method (IGeometryEngine)

In This Topic

Indicates whether this geometry is known to be topologically consistent according to the geometry type for storage in a database.

Syntax

C#
Visual Basic (Declaration)

bool IsSimpleAsFeature( 
   Geometry geometry,
   bool forceIsSimple
)

Function IsSimpleAsFeature( _
   ByVal geometry As Geometry, _
   Optional ByVal forceIsSimple As Boolean _
) As Boolean

Parameters

geometry: The geometry to be tested.
forceIsSimple: (Optional) The default value is false. When true, the geometry will be tested for simplicity even if it has already been tested or simplified. Geometry has a non-persisted internal flag that is set by IsSimpleAsFeature or SimplifyAsFeature calls. The flag is used to avoid computations if the state of the geometry is known.

Return Value

Returns true if the geometry is simple. Otherwise, returns false.

Exceptions

Exception	Description
System.ArgumentNullException	Geometry is null.
System.NotImplementedException	The method is not implemented for GeometryBag.

Remarks

See SimplifyAsFeature and IsSimpleAsFeature Pro Concepts topic. Note that NaN Z-values are not taken into account when determining if the geometry is topologically consistent. You should call GeometryEngine.ReplaceNaNZs on any geometry prior to saving it into a geodatabase.

Example

Project from WGS84

// create the polygon
List<MapPoint> pts = new List<MapPoint>();
pts.Add(MapPointBuilderEx.CreateMapPoint(1.0, 1.0, SpatialReferences.WGS84));
pts.Add(MapPointBuilderEx.CreateMapPoint(1.0, 2.0, SpatialReferences.WGS84));
pts.Add(MapPointBuilderEx.CreateMapPoint(2.0, 2.0, SpatialReferences.WGS84));
pts.Add(MapPointBuilderEx.CreateMapPoint(2.0, 1.0, SpatialReferences.WGS84));

Polygon polygon = PolygonBuilderEx.CreatePolygon(pts);
// ensure it is simple
bool isSimple = GeometryEngine.Instance.IsSimpleAsFeature(polygon);

// create the spatial reference to project to
SpatialReference northPole = SpatialReferenceBuilder.CreateSpatialReference(102018);   // north pole stereographic 

// project
Geometry geometry = GeometryEngine.Instance.Project(polygon, northPole);

Requirements

Target Platforms: Windows 11, Windows 10

ArcGIS Pro version: 3 or higher.

Reference

IGeometryEngine Interface
IGeometryEngine Members
SimplifyAsFeature and IsSimpleAsFeature

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