ArcGIS Pro 3.3 API Reference Guide
ArcGIS.Core.Geometry Namespace / EllipticArcBuilderEx Class / CreateCircularArc Method / CreateCircularArc(MapPoint,MapPoint,Coordinate2D,ArcOrientation,SpatialReference) Method
The point from which the arc starts.
The point to which the arc ends.
The center point of the embedded circle.
The orientation of the arc, clockwise or counterclockwise.
(Optional) The spatial reference. The default value is null. The spatial references of the start and end points are ignored.
Example

In This Topic
    CreateCircularArc(MapPoint,MapPoint,Coordinate2D,ArcOrientation,SpatialReference) Method
    In This Topic
    Convenience method to create a new instance of the EllipticArcSegment class. The segment will be a circular arc built from end points and the center point.
    Syntax
    Public Overloads Shared Function CreateCircularArc( _
       ByVal startPt As MapPoint, _
       ByVal endPt As MapPoint, _
       ByVal centerPt As Coordinate2D, _
       ByVal orientation As ArcOrientation, _
       Optional ByVal spatialReference As SpatialReference _
    ) As EllipticArcSegment

    Parameters

    startPt
    The point from which the arc starts.
    endPt
    The point to which the arc ends.
    centerPt
    The center point of the embedded circle.
    orientation
    The orientation of the arc, clockwise or counterclockwise.
    spatialReference
    (Optional) The spatial reference. The default value is null. The spatial references of the start and end points are ignored.

    Return Value

    Exceptions
    Remarks
    The xy-tolerance from the spatial reference is used to create the elliptic arc. If the spatial reference is null, then a default tolerance is used which may cause unexpected results.
    Example
    Construct a Circular Arc - using a center point and orientation
    // Construct a circular arc from (2, 1) to (1, 2) 
    // with center point at (1, 1) and orientation counterclockwise.
    // Use a builderEx convenience method or use a builderEx constructor.
    
    MapPoint toPt = MapPointBuilderEx.CreateMapPoint(1, 2);
    MapPoint fromPt = MapPointBuilderEx.CreateMapPoint(2, 1);
    Coordinate2D centerPtCoord = new Coordinate2D(1, 1);
    
    // BuilderEx convenience methods don't need to run on the MCT.
    EllipticArcSegment circularArc = EllipticArcBuilderEx.CreateCircularArc(fromPt, toPt, centerPtCoord, ArcOrientation.ArcCounterClockwise);
    
    // BuilderEx constructors need to run on the MCT.
    EllipticArcBuilderEx cab = new EllipticArcBuilderEx(fromPt, toPt, centerPtCoord, ArcOrientation.ArcCounterClockwise);
    EllipticArcSegment otherCircularArc = cab.ToSegment();
    
    Requirements

    Target Platforms: Windows 11, Windows 10

    ArcGIS Pro version: 3 or higher.
    See Also