EllipticArcBuilderEx Constructor(Segment,Boolean,ArcOrientation,Double,Double,SpatialReference)

In This Topic

Creates a new instance of the EllipticArcBuilderEx class. The new instance will be a circular arc.

Syntax

Visual Basic (Declaration)
C#

Public Function New( _
   ByVal tangentSegment As Segment, _
   ByVal atStart As Boolean, _
   ByVal orientation As ArcOrientation, _
   ByVal radius As Double, _
   ByVal arcLength As Double, _
   Optional ByVal spatialReference As SpatialReference _
)

public EllipticArcBuilderEx( 
   Segment tangentSegment,
   bool atStart,
   ArcOrientation orientation,
   double radius,
   double arcLength,
   SpatialReference spatialReference
)

Parameters

tangentSegment: The segment to which the constructed arc will be tangent at its start or end point.
atStart: The boolean indicating if the arc should be constructed at the start or end of the tangent segment.
orientation: The value indicating if the arc is oriented clockwise or counterclockwise.
radius: The radius of the arc. Must not be NaN or equal to zero. If the radius is < 0, then the absolute value is used.
arcLength: The length of the arc. Must not be NaN or equal to zero. If the arcLength is < 0, then the absolute value is used.
spatialReference: (Optional) The spatial reference of the arc. The default value is null.

Exceptions

Exception	Description
System.ArgumentNullException	The tangent segment is null.
System.ArgumentException	The radius or arc length is equal to zero.
System.ArgumentException	The radius or arc length is NaN.

Remarks

Elliptic Arc Constructor

Example

Create Ellipse Text Element

{
  //Note: Must be on QueuedTask.Run

  //Build geometry
  Coordinate2D center = new Coordinate2D(4.5, 2.75);
  var eabElp = new EllipticArcBuilderEx(center, 0, 1, 0.45, ArcOrientation.ArcClockwise);
  var ellipse = eabElp.ToSegment();

  var poly = PolygonBuilderEx.CreatePolygon(
    PolylineBuilderEx.CreatePolyline(ellipse, AttributeFlags.AllAttributes));

  //Set symbology, create and add element to layout
  CIMTextSymbol sym = SymbolFactory.Instance.ConstructTextSymbol(
                        ColorFactory.Instance.BlueRGB, 10, "Arial", "Regular");
  string text = "Ellipse, ellipse, ellipse";

  GraphicElement ge = ElementFactory.Instance.CreateTextGraphicElement(
    layout, TextType.PolygonParagraph, poly, sym, text, "New Ellipse Text", false);
}

Create Predefined Shape Graphic Element 3

{
  //Note: Must be on QueuedTask.Run

  //Build geometry
  Coordinate2D center = new Coordinate2D(2, 2.75);
  var eabElp = new EllipticArcBuilderEx(
                           center, 0, 1, 0.45, ArcOrientation.ArcClockwise);
  var ellipse = eabElp.ToSegment();

  //Set symbology, create and add element to layout
  CIMStroke outline = SymbolFactory.Instance.ConstructStroke(
                        ColorFactory.Instance.GreenRGB, 2.0, SimpleLineStyle.Dot);
  CIMPolygonSymbol ellipseSym = SymbolFactory.Instance.ConstructPolygonSymbol(
                   ColorFactory.Instance.GreyRGB, SimpleFillStyle.Vertical, outline);

  var poly = PolygonBuilderEx.CreatePolygon(
    PolylineBuilderEx.CreatePolyline(ellipse, AttributeFlags.AllAttributes));

  var ge = ElementFactory.Instance.CreatePredefinedShapeGraphicElement(
    layout, PredefinedShape.Ellipse, poly.Extent.Center, 0, 0, ellipseSym,
    "New Ellipse2", false, new ElementInfo() { Anchor = Anchor.TopRightCorner });
}

Requirements

Target Platforms: Windows 11 Home, Pro, Enterprise (64 bit)

ArcGIS Pro version: 3.0 or higher.

Reference

EllipticArcBuilderEx Class
EllipticArcBuilderEx Members
Overload List

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