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PolyQuadraticBezierSegment.Points Property

 

Gets or sets the PointCollection that defines this PolyQuadraticBezierSegment object.

Namespace:   System.Windows.Media
Assembly:  PresentationCore (in PresentationCore.dll)

public PointCollection Points { get; set; }

Property Value

Type: System.Windows.Media.PointCollection

A collection that defines the shape of this PolyQuadraticBezierSegment object. The default value is an empty collection.

The first two points in the collection specify the control point and end point of the first curve segment. The next two points specify the control point and end point of the second curve segment, and so on. The collection should contain an even number of points.

Identifier field

PointsProperty

Metadata properties set to true

None

The following example shows how to use PolyQuadraticBezierSegment to create two quadratic Bezier curves. The control and end points of the curves are specified by setting the Points property.

<Page xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
  xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
  <StackPanel>
    <Canvas>
      <Path Stroke="Black" StrokeThickness="1">
        <Path.Data>
          <PathGeometry>
            <PathGeometry.Figures>
              <PathFigureCollection>

                <!-- The StartPoint specifies the starting point of the first curve. -->
                <PathFigure StartPoint="10,100">
                  <PathFigure.Segments>
                    <PathSegmentCollection>

                      <!-- The PolyQuadraticBezierSegment specifies two Bezier curves.
                           The first curve is from 10,100 (start point specified above)
                           to 300,100 with a control point of 200,200. The second curve
                           is from 200,200 (end of the last curve) to 30,400 with a 
                           control point of 0,200. -->
                      <PolyQuadraticBezierSegment Points="200,200 300,100 0,200 30,400" />
                    </PathSegmentCollection>
                  </PathFigure.Segments>
                </PathFigure>
              </PathFigureCollection>
            </PathGeometry.Figures>
          </PathGeometry>
        </Path.Data>
      </Path>
    </Canvas>
  </StackPanel>
</Page>
using System;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Media;
using System.Windows.Shapes;

namespace SDKSample
{
    public partial class PolyQuadraticBezierSegmentExample : Page
    {
        public PolyQuadraticBezierSegmentExample()
        {

            // Create a PathFigure to be used for the PathGeometry of myPath.
            PathFigure myPathFigure = new PathFigure();

            // Set the starting point for the PathFigure specifying that the
            // geometry starts at point 10,100.
            myPathFigure.StartPoint = new Point(10, 100);

            // Create a PointCollection that holds the Points used to specify 
            // the points of the PolyQuadraticBezierSegment below.
            PointCollection myPointCollection = new PointCollection(4);
            myPointCollection.Add(new Point(200, 200));
            myPointCollection.Add(new Point(300, 100));
            myPointCollection.Add(new Point(0, 200));
            myPointCollection.Add(new Point(30, 400));

            // The PolyQuadraticBezierSegment specifies two Bezier curves.
            // The first curve is from 10,100 (start point specified above)
            // to 300,100 with a control point of 200,200. The second curve
            // is from 200,200 (end of the last curve) to 30,400 with a 
            // control point of 0,200.
            PolyQuadraticBezierSegment myBezierSegment = new PolyQuadraticBezierSegment();
            myBezierSegment.Points = myPointCollection;

            PathSegmentCollection myPathSegmentCollection = new PathSegmentCollection();
            myPathSegmentCollection.Add(myBezierSegment);

            myPathFigure.Segments = myPathSegmentCollection;

            PathFigureCollection myPathFigureCollection = new PathFigureCollection();
            myPathFigureCollection.Add(myPathFigure);

            PathGeometry myPathGeometry = new PathGeometry();
            myPathGeometry.Figures = myPathFigureCollection;

            // Create a path to draw a geometry with.
            Path myPath = new Path();
            myPath.Stroke = Brushes.Black;
            myPath.StrokeThickness = 1;

            // specify the shape (quadratic Bezier curve) of the path using the StreamGeometry.
            myPath.Data = myPathGeometry;

            // Add path shape to the UI.
            StackPanel mainPanel = new StackPanel();
            mainPanel.Children.Add(myPath);
            this.Content = mainPanel;
        }
    }
}

.NET Framework
Available since 3.0
Silverlight
Available since 2.0
Windows Phone Silverlight
Available since 7.0
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