CreateCubicBezierSegment(IEnumerable<MapPoint>,SpatialReference) Method

In This Topic

Convenience method to create a new instance of the CubicBezierSegment class from four control points.

Syntax

C#
Visual Basic (Declaration)

public static CubicBezierSegment CreateCubicBezierSegment( 
   IEnumerable<MapPoint> points,
   SpatialReference spatialReference
)

Public Overloads Shared Function CreateCubicBezierSegment( _
   ByVal points As IEnumerable(Of MapPoint), _
   Optional ByVal spatialReference As SpatialReference _
) As CubicBezierSegment

Parameters

points: The enumeration of points from which the curve will be constructed. Four points must be supplied.
spatialReference: (Optional) The spatial reference. The default value is null. The spatial references of the input points are ignored.

Exceptions

Exception	Description
System.ArgumentException	Four points are required for a cubic bezier.
System.ArgumentNullException	points is null or one of the 4 points is null or empty.

Remarks

The four points of the cubic bezier segment. points[0] is the start point, points[1] and points[2] are the control points, and points[3] is the end point.

Example

Construct a Cubic Bezier - from an enumeration of MapPoints

// Use a buildeExr convenience method or use a builderEx constructor.

MapPoint startPt = MapPointBuilderEx.CreateMapPoint(1.0, 1.0, SpatialReferences.WGS84);
MapPoint endPt = MapPointBuilderEx.CreateMapPoint(2.0, 2.0, SpatialReferences.WGS84);

MapPoint ctrl1Pt = MapPointBuilderEx.CreateMapPoint(1.0, 2.0, SpatialReferences.WGS84);
MapPoint ctrl2Pt = MapPointBuilderEx.CreateMapPoint(2.0, 1.0, SpatialReferences.WGS84);

List<MapPoint> listMapPoints = new List<MapPoint>();
listMapPoints.Add(startPt);
listMapPoints.Add(ctrl1Pt);
listMapPoints.Add(ctrl2Pt);
listMapPoints.Add(endPt);

// BuilderEx convenience methods don't need to run on the MCT
CubicBezierSegment bezier = CubicBezierBuilderEx.CreateCubicBezierSegment(listMapPoints);

// builderEx constructors dont need to run on the MCT
CubicBezierBuilderEx cbbEx = new CubicBezierBuilderEx(listMapPoints);
bezier = cbbEx.ToSegment() as CubicBezierSegment;

Requirements

Target Platforms: Windows 11, Windows 10, Windows 8.1

Reference

CubicBezierBuilderEx Class
CubicBezierBuilderEx Members
Overload List

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