EllipticArcBuilderEx Constructor(Coordinate2D,Double,ArcOrientation,SpatialReference)
Creates a new instance of the EllipticArcBuilderEx class.
The new instance will be a circle from a center point and radius.
Construct a Circle
// Construct a circle with center at (-1,-1), radius = 2, and oriented clockwise.
// Use a builderEx convenience method or use a builderEx constructor.
Coordinate2D centerPtCoord = new Coordinate2D(-1, -1);
// Builder convenience methods don't need to run on the MCT.
EllipticArcSegment circle = EllipticArcBuilderEx.CreateCircle(centerPtCoord, 2, ArcOrientation.ArcClockwise);
// circle.IsCircular = true
// circle.IsCounterClockwise = false
// circle.IsMinor = false
double startAngle, rotationAngle, centralAngle, semiMajor, semiMinor;
Coordinate2D actualCenterPt;
circle.QueryCoords(out actualCenterPt, out startAngle, out centralAngle, out rotationAngle, out semiMajor, out semiMinor);
// semiMajor = 2.0
// semiMinor = 2.0
// startAngle = PI/2
// centralAngle = -2*PI
// rotationAngle = 0
// endAngle = PI/2
// This EllipticArcBuilderEx constructor doesn't need to run on the MCT.
EllipticArcBuilderEx builder = new EllipticArcBuilderEx(centerPtCoord, 2, ArcOrientation.ArcClockwise);
EllipticArcSegment otherCircle = builder.ToSegment();
Create Circle Text Element
//Must be on QueuedTask.Run(() => { ...
//Build geometry
Coordinate2D center = new Coordinate2D(4.5, 4);
var eabCir = new EllipticArcBuilderEx(center, 0.5, ArcOrientation.ArcClockwise);
var cir = eabCir.ToSegment();
var poly = PolygonBuilderEx.CreatePolygon(
PolylineBuilderEx.CreatePolyline(cir, AttributeFlags.AllAttributes));
//Set symbology, create and add element to layout
CIMTextSymbol sym = SymbolFactory.Instance.ConstructTextSymbol(
ColorFactory.Instance.GreenRGB, 10, "Arial", "Regular");
string text = "Circle, circle, circle";
GraphicElement cirTxtElm = ElementFactory.Instance.CreateTextGraphicElement(
container, TextType.CircleParagraph, poly, sym, text, "New Circle Text", false);
Target Platforms: Windows 11, Windows 10
ArcGIS Pro version: 3 or higher.