Практическое руководство. Анимация прямоугольника
В этом примере показано, как анимировать изменения размера и положения прямоугольника.
Пример
В следующем примере используется экземпляр RectAnimation класс для анимации Rect свойство RectangleGeometry, который анимирует изменения размера и положения прямоугольника.
using System;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Shapes;
using System.Windows.Media.Animation;
using System.Windows.Media;
namespace SDKSamples
{
public class RectAnimationExample : Page
{
public RectAnimationExample()
{
// Create a NameScope for this page so that
// Storyboards can be used.
NameScope.SetNameScope(this, new NameScope());
RectangleGeometry myRectangleGeometry = new RectangleGeometry();
myRectangleGeometry.Rect = new Rect(0, 200, 100, 100);
// Assign the geometry a name so that
// it can be targeted by a Storyboard.
this.RegisterName(
"MyAnimatedRectangleGeometry", myRectangleGeometry);
Path myPath = new Path();
myPath.Fill = Brushes.LemonChiffon;
myPath.StrokeThickness = 1;
myPath.Stroke = Brushes.Black;
myPath.Data = myRectangleGeometry;
RectAnimation myRectAnimation = new RectAnimation();
myRectAnimation.Duration = TimeSpan.FromSeconds(2);
myRectAnimation.FillBehavior = FillBehavior.HoldEnd;
// Set the animation to repeat forever.
myRectAnimation.RepeatBehavior = RepeatBehavior.Forever;
// Set the From and To properties of the animation.
myRectAnimation.From = new Rect(0, 200, 100, 100);
myRectAnimation.To = new Rect(600, 50, 200, 50);
// Set the animation to target the Rect property
// of the object named "MyAnimatedRectangleGeometry."
Storyboard.SetTargetName(myRectAnimation, "MyAnimatedRectangleGeometry");
Storyboard.SetTargetProperty(
myRectAnimation, new PropertyPath(RectangleGeometry.RectProperty));
// Create a storyboard to apply the animation.
Storyboard ellipseStoryboard = new Storyboard();
ellipseStoryboard.Children.Add(myRectAnimation);
// Start the storyboard when the Path loads.
myPath.Loaded += delegate(object sender, RoutedEventArgs e)
{
ellipseStoryboard.Begin(this);
};
Canvas containerCanvas = new Canvas();
containerCanvas.Children.Add(myPath);
Content = containerCanvas;
}
}
}