Namespace:
ESRI.ArcGISExplorer.Geometry
Assembly:
ESRI.ArcGISExplorer (in ESRI.ArcGISExplorer.dll) Version: 2.0.0.900 (2.0.0.900)
Syntax
| C# |
|---|
public int RingCount { get; } |
| Visual Basic (Declaration) |
|---|
Public ReadOnly Property RingCount As Integer |
Field Value
An integer indicating the number of rings.Remarks
Polygons may consist of one or more individual rings; those with one ring are known as single part polygons, and those with more than one ring are known as multipart polygons. Each ring is made up of a number of points, which define the vertices of the ring. Rings may be outer rings, describing an outer boundary of a section of Polygon, or may be inner rings, describing a hole within an outer ring. Each individual ring in a Polygon must describe a closed shape - the first Point must be at the same location as the last Point; see the Close()()() method.
Examples
CopyC#// Create a list to hold all the created polygons, System.Collections.Generic.List<Polygon> singlePrts = new System.Collections.Generic.List<Polygon>(pgon.RingCount); // Use RingCount and GetRing to iterate through every ring except the first ring in the polygon. for (int i = 1; i < pgon.RingCount; i++) { // Create a new Polygon from the ring, and add to the list. // Note - simplifying will correct turn any inner rings (holes) into outer rings (boundaries). Polygon newPoly = GeometryOperations.Simplify(new Polygon(pgon.GetRing(i))); singlePrts.Add(newPoly); } // Remove the subsequent rings from the original Polygon and add the original Polygon to the list. while (pgon.RingCount > 1) { pgon.RemoveRing(1); } singlePrts.Add(pgon);
CopyVB.NET' Create a list to hold all the created Polygons, Dim singlePrts As System.Collections.Generic.List(Of Polygon) = New System.Collections.Generic.List(Of Polygon)(poly.RingCount) ' Use RingCount and GetRing to iterate through every ring except the first ring in the polygon. For i As Integer = 1 To poly.RingCount - 1 ' Create a new Polygon from the ring, and add to the list. ' Note - simplifying will correct turn any inner rings (holes) into outer rings (boundaries). Dim newPoly As Polygon = GeometryOperations.Simplify(New Polygon(poly.GetRing(i))) singlePrts.Add(newPoly) Next i ' Remove the subsequent rings from the original Polygon and add the original Polygon to the list. While poly.RingCount > 1 poly.RemoveRing(1) End While singlePrts.Add(poly)
