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PolyQuadraticBezierSegment Class
 

Represents a set of quadratic Bezier segments.

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

SystemObject
   System.Windows.ThreadingDispatcherObject
     System.WindowsDependencyObject
       System.WindowsFreezable
         System.Windows.Media.AnimationAnimatable
           System.Windows.MediaPathSegment
            System.Windows.MediaPolyQuadraticBezierSegment

public sealed class PolyQuadraticBezierSegment : PathSegment
public ref class PolyQuadraticBezierSegment sealed : PathSegment
[<Sealed>]
type PolyQuadraticBezierSegment = 
    class
        inherit PathSegment
    end
Public NotInheritable Class PolyQuadraticBezierSegment
	Inherits PathSegment
NameDescription
System_CAPS_pubmethod PolyQuadraticBezierSegment

Initializes a new instance of the PolyQuadraticBezierSegment class.

System_CAPS_pubmethod PolyQuadraticBezierSegment

Initializes a new instance of the PolyQuadraticBezierSegment class with the specified collection of Point objects and a value specifying whether the segments are stroked.

NameDescription
System_CAPS_pubproperty

Gets a value that indicates whether the object can be made unmodifiable. (Inherited from Freezable.)

System_CAPS_pubproperty

Gets the DependencyObjectType that wraps the CLR type of this instance. (Inherited from DependencyObject.)

System_CAPS_pubproperty

Gets the Dispatcher this DispatcherObject is associated with. (Inherited from DispatcherObject.)

System_CAPS_pubproperty

Gets a value that indicates whether one or more AnimationClock objects is associated with any of this object's dependency properties.(Inherited from Animatable.)

System_CAPS_pubproperty

Gets a value that indicates whether the object is currently modifiable. (Inherited from Freezable.)

System_CAPS_pubproperty

Gets a value that indicates whether this instance is currently sealed (read-only).(Inherited from DependencyObject.)

System_CAPS_pubproperty

Gets or sets a value that indicates whether the join between this PathSegment and the previous PathSegment is treated as a corner when it is stroked with a Pen. (Inherited from PathSegment.)

System_CAPS_pubproperty

Gets or sets a value that indicates whether the segment is stroked. (Inherited from PathSegment.)

System_CAPS_pubproperty

Gets or sets the PointCollection that defines this PolyQuadraticBezierSegment object.

NameDescription
System_CAPS_pubmethod ApplyAnimationClock

Applies an AnimationClock to the specified DependencyProperty. If the property is already animated, the SnapshotAndReplace handoff behavior is used.(Inherited from Animatable.)

System_CAPS_pubmethod ApplyAnimationClock

Applies an AnimationClock to the specified DependencyProperty. If the property is already animated, the specified HandoffBehavior is used.(Inherited from Animatable.)

System_CAPS_pubmethod BeginAnimation

Applies an animation to the specified DependencyProperty. The animation is started when the next frame is rendered. If the specified property is already animated, the SnapshotAndReplace handoff behavior is used.(Inherited from Animatable.)

System_CAPS_pubmethod BeginAnimation

Applies an animation to the specified DependencyProperty. The animation is started when the next frame is rendered. If the specified property is already animated, the specified HandoffBehavior is used. (Inherited from Animatable.)

System_CAPS_pubmethod CheckAccess

Determines whether the calling thread has access to this DispatcherObject.(Inherited from DispatcherObject.)

System_CAPS_pubmethod ClearValue

Clears the local value of a property. The property to be cleared is specified by a DependencyProperty identifier. (Inherited from DependencyObject.)

System_CAPS_pubmethod ClearValue

Clears the local value of a read-only property. The property to be cleared is specified by a DependencyPropertyKey. (Inherited from DependencyObject.)

System_CAPS_pubmethod Clone

Creates a modifiable clone of this PolyQuadraticBezierSegment, making deep copies of this object's values. When copying dependency properties, this method copies resource references and data bindings (but they might no longer resolve) but not animations or their current values.

System_CAPS_pubmethod CloneCurrentValue

Creates a modifiable clone of this PolyQuadraticBezierSegment object, making deep copies of this object's current values. Resource references, data bindings, and animations are not copied, but their current values are.

System_CAPS_pubmethod CoerceValue

Coerces the value of the specified dependency property. This is accomplished by invoking any CoerceValueCallback function specified in property metadata for the dependency property as it exists on the calling DependencyObject.(Inherited from DependencyObject.)

System_CAPS_pubmethod Equals

Determines whether a provided DependencyObject is equivalent to the current DependencyObject.(Inherited from DependencyObject.)

System_CAPS_pubmethod Freeze

Makes the current object unmodifiable and sets its property to true. (Inherited from Freezable.)

System_CAPS_pubmethod GetAnimationBaseValue

Returns the non-animated value of the specified DependencyProperty.(Inherited from Animatable.)

System_CAPS_pubmethod GetAsFrozen

Creates a frozen copy of the Freezable, using base (non-animated) property values. Because the copy is frozen, any frozen sub-objects are copied by reference. (Inherited from Freezable.)

System_CAPS_pubmethod GetCurrentValueAsFrozen

Creates a frozen copy of the Freezable using current property values. Because the copy is frozen, any frozen sub-objects are copied by reference.(Inherited from Freezable.)

System_CAPS_pubmethod GetHashCode

Gets a hash code for this DependencyObject.(Inherited from DependencyObject.)

System_CAPS_pubmethod GetLocalValueEnumerator

Creates a specialized enumerator for determining which dependency properties have locally set values on this DependencyObject. (Inherited from DependencyObject.)

System_CAPS_pubmethod GetType

Gets the Type of the current instance.(Inherited from Object.)

System_CAPS_pubmethod GetValue

Returns the current effective value of a dependency property on this instance of a DependencyObject. (Inherited from DependencyObject.)

System_CAPS_pubmethod InvalidateProperty

Re-evaluates the effective value for the specified dependency property(Inherited from DependencyObject.)

System_CAPS_pubmethod ReadLocalValue

Returns the local value of a dependency property, if it exists. (Inherited from DependencyObject.)

System_CAPS_pubmethod SetCurrentValue

Sets the value of a dependency property without changing its value source. (Inherited from DependencyObject.)

System_CAPS_pubmethod SetValue

Sets the local value of a dependency property, specified by its dependency property identifier. (Inherited from DependencyObject.)

System_CAPS_pubmethod SetValue

Sets the local value of a read-only dependency property, specified by the DependencyPropertyKey identifier of the dependency property. (Inherited from DependencyObject.)

System_CAPS_protmethod ShouldSerializeProperty

Returns a value that indicates whether serialization processes should serialize the value for the provided dependency property.(Inherited from DependencyObject.)

System_CAPS_pubmethod ToString

Returns a string that represents the current object.(Inherited from Object.)

System_CAPS_pubmethod VerifyAccess

Enforces that the calling thread has access to this DispatcherObject.(Inherited from DispatcherObject.)

NameDescription
System_CAPS_pubfield System_CAPS_static PointsProperty

Identifies the  dependency property.

NameDescription
System_CAPS_pubevent Changed

Occurs when the Freezable or an object it contains is modified. (Inherited from Freezable.)

This class enables you to specify a collection of points to create multiple quadratic Bezier curve segments. With a QuadraticBezierSegment, you can specify only two points to create a single quadratic Bezier curve segment.

The following example shows how to use PolyQuadraticBezierSegment to create two quadratic Bezier curve segments.

<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;
        }
    }
}

Imports System
Imports System.Windows
Imports System.Windows.Controls
Imports System.Windows.Media
Imports System.Windows.Shapes

Namespace SDKSample
	Partial Public Class PolyQuadraticBezierSegmentExample
		Inherits Page
		Public Sub New()

			' Create a PathFigure to be used for the PathGeometry of myPath.
			Dim myPathFigure As 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.
			Dim myPointCollection As 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.
			Dim myBezierSegment As New PolyQuadraticBezierSegment()
			myBezierSegment.Points = myPointCollection

			Dim myPathSegmentCollection As New PathSegmentCollection()
			myPathSegmentCollection.Add(myBezierSegment)

			myPathFigure.Segments = myPathSegmentCollection

			Dim myPathFigureCollection As New PathFigureCollection()
			myPathFigureCollection.Add(myPathFigure)

			Dim myPathGeometry As New PathGeometry()
			myPathGeometry.Figures = myPathFigureCollection

			' Create a path to draw a geometry with.
			Dim myPath As 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.
			Dim mainPanel As New StackPanel()
			mainPanel.Children.Add(myPath)
			Me.Content = mainPanel
		End Sub
	End Class
End Namespace
.NET Framework
Available since 3.0
Silverlight
Available since 2.0
Windows Phone Silverlight
Available since 7.0

Any public static ( Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

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