EllipticArcBuilder Constructor(Coordinate2D,Double,Double,Double,esriArcOrientation,SpatialReference)

Builds a new instance of the EllipticArcBuilder class. The new instance will be an ellipse. This method must be called on the MCT. Use QueuedTask.Run.

Syntax

C#
Visual Basic (Declaration)

public EllipticArcBuilder( 
   Coordinate2D centerPt,
   double rotationAngle,
   double semiMajorAxis,
   double minorMajorRatio,
   esriArcOrientation orientation,
   SpatialReference spatialReference
)

Public Function New( _
   ByVal centerPt As Coordinate2D, _
   ByVal rotationAngle As Double, _
   ByVal semiMajorAxis As Double, _
   ByVal minorMajorRatio As Double, _
   ByVal orientation As esriArcOrientation, _
   Optional ByVal spatialReference As SpatialReference _
)

Parameters

centerPt: The center point of the ellipse.
rotationAngle: The angle in radians by which the ellipse is rotated from the x-axis. A positive value corresponds to counterclockwise rotation.
semiMajorAxis: The length of the semi-major axis.
minorMajorRatio: The ratio of the length of the semi-minor axis to the length of the semi-major axis.
orientation: The orientation of the arc, clockwise or counterclockwise.
spatialReference: (Optional) The spatial reference of the arc. The default value is null.

Exceptions

Exception	Description
ArcGIS.Core.CalledOnWrongThreadException	This method or property must be called within the lambda passed to QueuedTask.Run.

Example

// Construct an ellipse centered at (1, 2) with rotationAngle = -pi/6,  
// semiMajorAxis = 5, minorMajorRatio = 0.2, oriented clockwise.
// Use a builder convenience method or use a builder constructor.

Coordinate2D centerPt = new Coordinate2D(1, 2);

// Builder convenience methods don't need to run on the MCT.
EllipticArcSegment ellipse = EllipticArcBuilder.CreateEllipticArcSegment(centerPt, -1 * Math.PI / 6, 5, 0.2, esriArcOrientation.esriArcClockwise);

// Builder constructors need to run on the MCT.
ArcGIS.Desktop.Framework.Threading.Tasks.QueuedTask.Run(() =>
{
  using (EllipticArcBuilder builder = new EllipticArcBuilder(centerPt, -1 * Math.PI / 6, 5, 0.2, esriArcOrientation.esriArcClockwise))
  {
    // do something with the builder

    EllipticArcSegment anotherEllipse = builder.ToSegment();
  }
});

Requirements

Target Platforms: Windows 10, Windows 8.1

Reference

EllipticArcBuilder Class
EllipticArcBuilder Members
Overload List