Opacity Animation : Animation « Windows Presentation Foundation « VB.Net






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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