WPF 跟随鼠标动画 by wgscd
<UserControl x:Class="WpfApplication1.Spark"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
mc:Ignorable="d"
x:Name="ctl" d:DesignHeight="60" d:DesignWidth="60">
<UserControl.Resources>
<Duration x:Key="duration">0:0:0.8</Duration>
<Storyboard x:Key="sb1" x:Name="sb1" Completed="Storyboard_Completed">
<DoubleAnimation From="1" To="0" Duration="0:0:0.8" Storyboard.TargetName="t1" Storyboard.TargetProperty="ScaleX"></DoubleAnimation>
<DoubleAnimation From="1" To="0" Duration="0:0:0.8" Storyboard.TargetName="t1" Storyboard.TargetProperty="ScaleY"></DoubleAnimation>
<DoubleAnimation From="0" To="-20" Duration="0:0:0.8" Storyboard.TargetName="t2" Storyboard.TargetProperty="X"></DoubleAnimation>
<DoubleAnimation From="1" To="0" Duration="0:0:0.8" Storyboard.TargetName="ctl" Storyboard.TargetProperty="Opacity"></DoubleAnimation>
</Storyboard>
</UserControl.Resources>
<Grid>
<Ellipse Fill="White" RenderTransformOrigin="0.5,0.5">
<Ellipse.RenderTransform>
<TransformGroup>
<ScaleTransform x:Name="t1" ScaleX="1" ScaleY="1"/>
<SkewTransform/>
<RotateTransform Angle="0"/>
<TranslateTransform x:Name="t2" Y="0" X="0"/>
</TransformGroup>
</Ellipse.RenderTransform>
</Ellipse>
</Grid>
</UserControl>
using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Windows; using System.Windows.Controls; using System.Windows.Data; using System.Windows.Documents; using System.Windows.Input; using System.Windows.Media; using System.Windows.Media.Animation; using System.Windows.Media.Imaging; using System.Windows.Navigation; using System.Windows.Shapes; namespace WpfApplication1 { /// <summary> /// Spark.xaml 的交互逻辑 /// </summary> public partial class Spark : UserControl { public Spark() { InitializeComponent(); this.Width = this.Height = rnd.Next(23, 80); } Random rnd = new Random(); public Spark(Point p) { InitializeComponent(); this.Width = this.Height = rnd.Next(23,80); Canvas.SetLeft(this,p.X); Canvas.SetTop(this,p.Y); (Resources["sb1"] as Storyboard).Begin(); } private void Storyboard_Completed(object sender, EventArgs e) { try { (Parent as Canvas).Children.Remove(this); //GC.Collect(); } catch { } } } }
<Window x:Class="WpfApplication1.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="MainWindow" Height="384" Width="631">
<Grid>
<Canvas x:Name="myCanvas" Background="#FF61C1F7" ManipulationDelta="myCanvas_ManipulationDelta" MouseMove="myCanvas_MouseMove"></Canvas>
</Grid>
</Window>
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private void myCanvas_MouseMove(object sender, MouseEventArgs e)
{
myCanvas.Children.Add(new Spark(e.GetPosition(myCanvas)));
// myCanvas.Children.Add(new Spark());
Title = "" + myCanvas.Children.Count;
}