Opacity Animation
<Window x:Class="_360Timer.Window1"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="Concentric Rings" Width="910" Height="512">
<Canvas Name="MainCanvas" Background="#FFE0E0E0"/>
</Window>
//File:Window.xaml.vb
Imports System
Imports System.Windows
Imports System.Windows.Controls
Imports System.Windows.Data
Imports System.Windows.Documents
Imports System.Windows.Media
Imports System.Windows.Shapes
Imports System.Windows.Media.Animation
Namespace _360Timer
Public Partial Class Window1
Inherits Window
Public Sub New()
InitializeComponent()
Me.Show()
For i As Integer = 0 To 23
Dim e As New Ellipse()
e.Stroke = New SolidColorBrush(Color.FromArgb(5, 2, 200, 100))
e.StrokeThickness = 20
e.Width = 10.0
e.Height = 20.0
Me.MainCanvas.Children.Add(e)
e.SetValue(Canvas.LeftProperty, 300)
e.SetValue(Canvas.TopProperty, 400)
Dim duration As Double = 6.0
Dim delay As Double = 1.0
Dim opacityAnimation As New DoubleAnimation(duration - 1.0, 0.0, New Duration(TimeSpan.FromSeconds(duration)))
opacityAnimation.BeginTime = TimeSpan.FromSeconds(delay)
opacityAnimation.RepeatBehavior = RepeatBehavior.Forever
e.BeginAnimation(Ellipse.OpacityProperty, opacityAnimation)
Next
End Sub
End Class
End Namespace
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