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Nasıl yapılır: Bir Nesnenin Yol Üzerinde Animasyonunu Oluşturma (Sapma Birikmesi ile Matris Animasyonu)

  • Makale

Bu örnekte, bir nesneye yol boyunca animasyon eklemek için sınıfın MatrixAnimationUsingPath nasıl kullanılacağı ve bu animasyonda tekrarlanan uzaklık değerlerinin birikmesi gösterilmektedir.

Örnek

Aşağıdaki örnek, bir düğmeye uygulanan özelliğine MatrixMatrixTransform animasyon eklemek için nesnesini kullanırMatrixAnimationUsingPath. Sonuç olarak, bir düğme eğri bir yol boyunca hareket eder.

Buna ek olarak, örnek özelliğini trueolarak ayarlar IsOffsetCumulative ve bu da animasyon tekrar ettikçe animasyonlu matrisin uzaklığının birikmesine neden olur. Uzaklık biriktiğinden, animasyon tekrarlandığında düğme başlangıç konumuna sıfırlamak yerine ekranda daha uzağa taşınır.

<Page 
  xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
  xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Margin="20"
  xmlns:PresentationOptions="http://schemas.microsoft.com/winfx/2006/xaml/presentation/options" 
  xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
  mc:Ignorable="PresentationOptions">
  
  <Canvas Width="400" Height="400">
  

    <!-- The Button that is animated across the screen by animating
         the MatrixTransform applied to the button. -->
    <Button MinWidth="100" Content="A Button">
      <Button.RenderTransform>
        <MatrixTransform x:Name="myMatrixTransform">
          <MatrixTransform.Matrix >
            <Matrix />
          </MatrixTransform.Matrix>
        </MatrixTransform>
      </Button.RenderTransform>
      <Button.Triggers>
        <EventTrigger RoutedEvent="Button.Click">
          <BeginStoryboard>
            <Storyboard>
              <MatrixAnimationUsingPath
              Storyboard.TargetName="myMatrixTransform"
              Storyboard.TargetProperty="Matrix"
              IsOffsetCumulative="True"
              Duration="0:0:5" 
              RepeatBehavior="2x">
                <MatrixAnimationUsingPath.PathGeometry>
                  <PathGeometry 
                    Figures="M 10,100 C 35,0 135,0 160,100 180,190 285,200 310,100" 
                    PresentationOptions:Freeze="True" />
                </MatrixAnimationUsingPath.PathGeometry>
              </MatrixAnimationUsingPath>
            </Storyboard>
          </BeginStoryboard>
        </EventTrigger>
      </Button.Triggers>
      
    </Button>   
  </Canvas>
</Page>

using System;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Navigation;
using System.Windows.Shapes;

namespace SDKSample
{

    /// <summary>
    /// Shows how to use the MatrixAnimationUsingPath.IsOffsetCumulative
    /// property to make a MatrixAnimatioinUsingPath accumulate
    /// its values when it repeats.
    /// </summary>
    public class MatrixAnimationUsingPathExampleOffsetCumulative : Page
    {

        public MatrixAnimationUsingPathExampleOffsetCumulative()
        {
            this.Margin = new Thickness(20);

            // Create a NameScope for the page so that
            // we can use Storyboards.
            NameScope.SetNameScope(this, new NameScope());

            // Create a button.
            Button aButton = new Button();
            aButton.MinWidth = 100;
            aButton.Content = "A Button";

            // Create a MatrixTransform. This transform
            // will be used to move the button.
            MatrixTransform buttonMatrixTransform = new MatrixTransform();
            aButton.RenderTransform = buttonMatrixTransform;

            // Register the transform's name with the page
            // so that it can be targeted by a Storyboard.
            this.RegisterName("ButtonMatrixTransform", buttonMatrixTransform);

            // Create a Canvas to contain the button
            // and add it to the page.
            // Although this example uses a Canvas,
            // any type of panel will work.
            Canvas mainPanel = new Canvas();
            mainPanel.Width = 400;
            mainPanel.Height = 400;
            mainPanel.Children.Add(aButton);
            this.Content = mainPanel;

            // Create the animation path.
            PathGeometry animationPath = new PathGeometry();
            PathFigure pFigure = new PathFigure();
            pFigure.StartPoint = new Point(10, 100);
            PolyBezierSegment pBezierSegment = new PolyBezierSegment();
            pBezierSegment.Points.Add(new Point(35, 0));
            pBezierSegment.Points.Add(new Point(135, 0));
            pBezierSegment.Points.Add(new Point(160, 100));
            pBezierSegment.Points.Add(new Point(180, 190));
            pBezierSegment.Points.Add(new Point(285, 200));
            pBezierSegment.Points.Add(new Point(310, 100));
            pFigure.Segments.Add(pBezierSegment);
            animationPath.Figures.Add(pFigure);

            // Freeze the PathGeometry for performance benefits.
            animationPath.Freeze();

            // Create a MatrixAnimationUsingPath to move the
            // button along the path by animating
            // its MatrixTransform.
            MatrixAnimationUsingPath matrixAnimation =
                new MatrixAnimationUsingPath();
            matrixAnimation.PathGeometry = animationPath;

            // Set IsOffsetCumulative to true so that the animation
            // values accumulate when its repeats.
            matrixAnimation.IsOffsetCumulative = true;
            matrixAnimation.Duration = TimeSpan.FromSeconds(5);
            matrixAnimation.RepeatBehavior = new RepeatBehavior(2);

            // Set the animation to target the Matrix property
            // of the MatrixTransform named "ButtonMatrixTransform".
            Storyboard.SetTargetName(matrixAnimation, "ButtonMatrixTransform");
            Storyboard.SetTargetProperty(matrixAnimation,
                new PropertyPath(MatrixTransform.MatrixProperty));

            // Create a Storyboard to contain and apply the animation.
            Storyboard pathAnimationStoryboard = new Storyboard();
            pathAnimationStoryboard.Children.Add(matrixAnimation);

            // Start the animation when the button is clicked.
            aButton.Click += delegate(object sender, RoutedEventArgs e)
            {
                // Start the storyboard.
                pathAnimationStoryboard.Begin(this);
            };
        }
    }
}


Imports System.Windows
Imports System.Windows.Controls
Imports System.Windows.Media
Imports System.Windows.Media.Animation
Imports System.Windows.Navigation
Imports System.Windows.Shapes


Namespace SDKSample

    ''' <summary>
    ''' Shows how to use the MatrixAnimationUsingPath.IsOffsetCumulative
    ''' property to make a MatrixAnimatioinUsingPath accumulate
    ''' its values when it repeats.
    ''' </summary>
    Public Class MatrixAnimationUsingPathExampleOffsetCumulative
        Inherits Page

        Public Sub New()
            Me.Margin = New Thickness(20)

            ' Create a NameScope for the page so that
            ' we can use Storyboards.
            NameScope.SetNameScope(Me, New NameScope())

            ' Create a button.
            Dim aButton As New Button()
            aButton.MinWidth = 100
            aButton.Content = "A Button"

            ' Create a MatrixTransform. This transform
            ' will be used to move the button.
            Dim buttonMatrixTransform As New MatrixTransform()
            aButton.RenderTransform = buttonMatrixTransform

            ' Register the transform's name with the page
            ' so that it can be targeted by a Storyboard.
            Me.RegisterName("ButtonMatrixTransform", buttonMatrixTransform)

            ' Create a Canvas to contain the button
            ' and add it to the page.
            ' Although this example uses a Canvas,
            ' any type of panel will work.
            Dim mainPanel As New Canvas()
            mainPanel.Width = 400
            mainPanel.Height = 400
            mainPanel.Children.Add(aButton)
            Me.Content = mainPanel

            ' Create the animation path.
            Dim animationPath As New PathGeometry()
            Dim pFigure As New PathFigure()
            pFigure.StartPoint = New Point(10, 100)
            Dim pBezierSegment As New PolyBezierSegment()
            pBezierSegment.Points.Add(New Point(35, 0))
            pBezierSegment.Points.Add(New Point(135, 0))
            pBezierSegment.Points.Add(New Point(160, 100))
            pBezierSegment.Points.Add(New Point(180, 190))
            pBezierSegment.Points.Add(New Point(285, 200))
            pBezierSegment.Points.Add(New Point(310, 100))
            pFigure.Segments.Add(pBezierSegment)
            animationPath.Figures.Add(pFigure)

            ' Freeze the PathGeometry for performance benefits.
            animationPath.Freeze()

            ' Create a MatrixAnimationUsingPath to move the
            ' button along the path by animating
            ' its MatrixTransform.
            Dim matrixAnimation As New MatrixAnimationUsingPath()
            matrixAnimation.PathGeometry = animationPath

            ' Set IsOffsetCumulative to true so that the animation
            ' values accumulate when its repeats. 
            matrixAnimation.IsOffsetCumulative = True
            matrixAnimation.Duration = TimeSpan.FromSeconds(5)
            matrixAnimation.RepeatBehavior = New RepeatBehavior(2)

            ' Set the animation to target the Matrix property
            ' of the MatrixTransform named "ButtonMatrixTransform".
            Storyboard.SetTargetName(matrixAnimation, "ButtonMatrixTransform")
            Storyboard.SetTargetProperty(matrixAnimation, New PropertyPath(MatrixTransform.MatrixProperty))

            ' Create a Storyboard to contain and apply the animation.
            Dim pathAnimationStoryboard As New Storyboard()
            pathAnimationStoryboard.Children.Add(matrixAnimation)

            ' Start the animation when the button is clicked.
            AddHandler aButton.Click, Sub(sender As Object, e As RoutedEventArgs) pathAnimationStoryboard.Begin(Me)

        End Sub
    End Class
End Namespace

özelliği, uzaklık değerlerinin IsOffsetCumulative yinelemeler üzerinde birikmesine neden olsa da, döndürme değerlerinin birikmesine neden olmaz. Döndürme değerlerinin birikmesi için animasyon DoesRotateWithTangentIsAngleCumulative ve özelliklerini olarak trueayarlayın.

Örneğin tamamı için bkz . Yol Animasyon Örneği. Uzaklık birikimi olmadan yol boyunca bir Matrix değere animasyon ekleme işlemini gösteren bir örnek için bkz . Yol Boyunca Nesneye Animasyon Ekleme (Matris Animasyonu).

Ayrıca bkz.