CubicBezierBuilderEx Class

In This Topic

A builder for creating a CubicBezierSegment whose methods can be called on any thread.

Object Model

Syntax

C#
Visual Basic (Declaration)

public sealed class CubicBezierBuilderEx : SegmentBuilderEx

Public NotInheritable Class CubicBezierBuilderEx 
   Inherits SegmentBuilderEx

Remarks

Use the CubicBezierBuilderEx class to to create and/or modify a CubicBezierSegment shape. A CubicBezierSegment is based upon the parent Segment class. The Segment class is immutable which means that you can not change its shape once it is created. Hence, the CubicBezierBuilderEx provides the way to make changes when working with a CubicBezierSegment. Use the CubicBezierBuilderEx.ToSegment method to get the CubicBezierSegment from the builder.

A cubic Bezier curve is a non-linear segment defined by four control points. The Bezier curve starts at control point 0 (start point) and ends at control point 3 (end point). The start point and control point 1 define the tangent at the start point. Control point 2 and the end point define the tangent at the end point. The length of these tangent lines and position of the 4 control points determines the shape of the created Bezier curve.

The CubicBezierBuilderEx methods can be called on any thread.

Example

Create_BezierCurve

//Create a bezier curve element with a simple line style.

//Construct on the worker thread
await QueuedTask.Run(() =>
{
  //Build geometry
  Coordinate2D pt1 = new Coordinate2D(1, 7.5);
  Coordinate2D pt2 = new Coordinate2D(1.66, 8);
  Coordinate2D pt3 = new Coordinate2D(2.33, 7.1);
  Coordinate2D pt4 = new Coordinate2D(3, 7.5);
  //At 2.x - CubicBezierBuilder bez = new CubicBezierBuilder(pt1, pt2, pt3, pt4);
  var bez = new CubicBezierBuilderEx(pt1, pt2, pt3, pt4);
  CubicBezierSegment bezSeg = bez.ToSegment();
  //At 2.x - Polyline bezPl = PolylineBuilder.CreatePolyline(bezSeg);
  Polyline bezPl = PolylineBuilderEx.CreatePolyline(bezSeg);

  //Set symbology, create and add element to layout
  CIMLineSymbol lineSym = SymbolFactory.Instance.ConstructLineSymbol(ColorFactory.Instance.RedRGB, 4.0, SimpleLineStyle.DashDot);
  //At 2.x - GraphicElement bezElm = LayoutElementFactory.Instance.CreateLineGraphicElement(layout, bezPl, lineSym);
  //         bezElm.SetName("New Bezier Curve");
  GraphicElement bezElm = ElementFactory.Instance.CreateGraphicElement(layout, bezPl, lineSym, "New Bezier Curve");
});

Create_CurveText

//Create curve text with basic text properties.

//Construct on the worker thread
await QueuedTask.Run(() =>
{
  //Build geometry
  Coordinate2D pt1 = new Coordinate2D(3.6, 7.5);
  Coordinate2D pt2 = new Coordinate2D(4.26, 8);
  Coordinate2D pt3 = new Coordinate2D(4.93, 7.1);
  Coordinate2D pt4 = new Coordinate2D(5.6, 7.5);
  //At 2.x - CubicBezierBuilder bez = new CubicBezierBuilder(pt1, pt2, pt3, pt4);
  var bez = new CubicBezierBuilderEx(pt1, pt2, pt3, pt4);
  CubicBezierSegment bezSeg = bez.ToSegment();
  //At 2.x - Polyline bezPl = PolylineBuilder.CreatePolyline(bezSeg);
  Polyline bezPl = PolylineBuilderEx.CreatePolyline(bezSeg);

  //Set symbolology, create and add element to layout
  CIMTextSymbol sym = SymbolFactory.Instance.ConstructTextSymbol(ColorFactory.Instance.BlackRGB, 24, "Comic Sans MS", "Regular");
  //At 2.x - GraphicElement bezTxtElm = LayoutElementFactory.Instance.CreateCurvedTextGraphicElement(layout, bezPl, "Curved Text", sym);
  //         bezTxtElm.SetName("New Splinned Text");
  GraphicElement bezTxtElm = ElementFactory.Instance.CreateTextGraphicElement(
                                layout, TextType.SplinedText, bezPl, sym, "Curved Text", "New Splinned Text");
});

Inheritance Hierarchy

System.Object
ArcGIS.Core.Geometry.SegmentBuilderEx
ArcGIS.Core.Geometry.CubicBezierBuilderEx

Requirements

Target Platforms: Windows 11, Windows 10, Windows 8.1

Reference

CubicBezierBuilderEx Members
ArcGIS.Core.Geometry Namespace

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