VB.Net Tutorial/2D Graphics/Animation

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Animator

<source lang="vbnet">Imports System Imports System.Drawing Imports System.Collections Imports System.ruponentModel Imports System.Windows.Forms Imports System.Data public class Animator

  public Shared Sub Main
       Application.Run(New Form1)
  End Sub

End class Public Class Form1

   Inherits System.Windows.Forms.Form
   Private img As Bitmap
   Dim currentlyAnimating As Boolean = False
  1. Region " Windows Form Designer generated code "
   Public Sub New()
       MyBase.New()
       "This call is required by the Windows Form Designer.
       InitializeComponent()
       "Add any initialization after the InitializeComponent() call
   End Sub
   "Form overrides dispose to clean up the component list.
   Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
       If disposing Then
           If Not (components Is Nothing) Then
               components.Dispose()
           End If
       End If
       MyBase.Dispose(disposing)
   End Sub
   "Required by the Windows Form Designer
   Private components As System.ruponentModel.IContainer
   "NOTE: The following procedure is required by the Windows Form Designer
   "It can be modified using the Windows Form Designer.  
   "Do not modify it using the code editor.
   <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
       "
       "Form1
       "
       Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
       Me.ClientSize = New System.Drawing.Size(536, 349)
       Me.Name = "Form1"
       Me.Text = "Form1"
   End Sub
  1. End Region
   Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
       img = New Bitmap("yourfile.jpg")
   End Sub
   Public Sub AnimateImage()
       If Not currentlyAnimating Then
           ImageAnimator.Animate(img, New EventHandler(AddressOf OnFrameChanged))
           currentlyAnimating = True
       End If
   End Sub "AnimateImage
   Private Sub OnFrameChanged(ByVal o As Object, ByVal e As EventArgs)
       Me.Invalidate()
   End Sub "OnFrameChanged
   Protected Overrides Sub OnPaint(ByVal e As PaintEventArgs)
       AnimateImage()
       ImageAnimator.UpdateFrames()
       e.Graphics.DrawImage(Me.img, New Point(0, 0))
   End Sub
   Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs)
   End Sub

End Class</source>

Program that animates a series of images

<source lang="vbnet">Imports System.Drawing Imports System.Drawing.Drawing2D Imports System.Windows.Forms Imports System.Collections public class AnimationBasedOnTimer

  public Shared Sub Main
       Application.Run(New FrmLogoAnimator)
  End Sub

End class Public Class FrmLogoAnimator

  Inherits System.Windows.Forms.Form
  Private mImages As ArrayList = New ArrayList()
  Private mCount As Integer = 1
  Public Sub New()
     MyBase.New()
     InitializeComponent()
     Dim i As Integer
     For i = 0 To 29
        mImages.Add(Image.FromFile( i & ".gif"))
     Next
     logoPictureBox.Image = CType(mImages(0), Image)
     logoPictureBox.Size = logoPictureBox.Image.Size
  End Sub " New
  Friend WithEvents timer As System.Windows.Forms.Timer
  Friend WithEvents logoPictureBox As _
     System.Windows.Forms.PictureBox
  1. Region " Windows Form Designer generated code "
  "Form overrides dispose to clean up the component list.
  Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
     If disposing Then
        If Not (components Is Nothing) Then
           components.Dispose()
        End If
     End If
     MyBase.Dispose(disposing)
  End Sub
  Private components As System.ruponentModel.IContainer
  "Required by the Windows Form Designer
  "NOTE: The following procedure is required by the Windows Form Designer
  "It can be modified using the Windows Form Designer.  
  "Do not modify it using the code editor.
  <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
     Me.ruponents = New System.ruponentModel.Container()
     Me.timer = New System.Windows.Forms.Timer(Me.ruponents)
     Me.logoPictureBox = New System.Windows.Forms.PictureBox()
     Me.SuspendLayout()
     "
     "Timer
     "
     Me.timer.Enabled = True
     "
     "logoPictureBox
     "
     Me.logoPictureBox.Location = New System.Drawing.Point(32, 24)
     Me.logoPictureBox.Name = "logoPictureBox"
     Me.logoPictureBox.Size = New System.Drawing.Size(168, 88)
     Me.logoPictureBox.TabIndex = 0
     Me.logoPictureBox.TabStop = False
     "
     "Form1
     "
     Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
     Me.ClientSize = New System.Drawing.Size(232, 141)
     Me.Controls.AddRange(New System.Windows.Forms.Control() {Me.logoPictureBox})
     Me.Name = "Form1"
     Me.Text = "LogoAnimator"
     Me.ResumeLayout(False)
  End Sub
  1. End Region
  Private Sub timer_Tick(ByVal sender As System.Object, _
     ByVal e As System.EventArgs) Handles timer.Tick
     mCount = (mCount + 1) Mod 30
     logoPictureBox.Image = CType(mImages(mCount), Image)
  End Sub 

End Class</source>

Scrolling Text by Timer

<source lang="vbnet">Imports System.Windows.Forms public class ScrollingText

  public Shared Sub Main
       Application.Run(New Form1)
  End Sub

End class Public Class Form1

   Inherits System.Windows.Forms.Form
   Public Sub New()
       MyBase.New()
       InitializeComponent()
   End Sub
   Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
       If disposing Then
           If Not (components Is Nothing) Then
               components.Dispose()
           End If
       End If
       MyBase.Dispose(disposing)
   End Sub
   Private components As System.ruponentModel.IContainer
   Friend WithEvents Label1 As System.Windows.Forms.Label
   Friend WithEvents Button1 As System.Windows.Forms.Button
   Friend WithEvents Button2 As System.Windows.Forms.Button
   Friend WithEvents Button3 As System.Windows.Forms.Button
   Friend WithEvents Timer1 As System.Windows.Forms.Timer
   <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
       Me.ruponents = New System.ruponentModel.Container
       Me.Label1 = New System.Windows.Forms.Label
       Me.Button1 = New System.Windows.Forms.Button
       Me.Button2 = New System.Windows.Forms.Button
       Me.Button3 = New System.Windows.Forms.Button
       Me.Timer1 = New System.Windows.Forms.Timer(Me.ruponents)
       Me.SuspendLayout()
       "
       "Label1
       "
       Me.Label1.Font = New System.Drawing.Font("Microsoft Sans Serif", 15.75!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
       Me.Label1.Location = New System.Drawing.Point(32, 32)
       Me.Label1.Name = "Label1"
       Me.Label1.Size = New System.Drawing.Size(216, 24)
       Me.Label1.TabIndex = 0
       Me.Label1.Text = "Scrolling Text"
       "
       "Button1
       "
       Me.Button1.Location = New System.Drawing.Point(24, 80)
       Me.Button1.Name = "Button1"
       Me.Button1.Size = New System.Drawing.Size(72, 24)
       Me.Button1.TabIndex = 1
       Me.Button1.Text = "Start"
       "
       "Button2
       "
       Me.Button2.Location = New System.Drawing.Point(112, 80)
       Me.Button2.Name = "Button2"
       Me.Button2.Size = New System.Drawing.Size(64, 24)
       Me.Button2.TabIndex = 2
       Me.Button2.Text = "Stop"
       "
       "Button3
       "
       Me.Button3.Location = New System.Drawing.Point(192, 80)
       Me.Button3.Name = "Button3"
       Me.Button3.Size = New System.Drawing.Size(72, 24)
       Me.Button3.TabIndex = 3
       Me.Button3.Text = "Exit"
       "
       "Timer1
       "
       Me.Timer1.Interval = 300
       "
       "Form1
       "
       Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
       Me.ClientSize = New System.Drawing.Size(292, 150)
       Me.Controls.Add(Me.Button3)
       Me.Controls.Add(Me.Button2)
       Me.Controls.Add(Me.Button1)
       Me.Controls.Add(Me.Label1)
       Me.Name = "Form1"
       Me.Text = "Scroll Text"
       Me.ResumeLayout(False)
   End Sub
   Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
       Do While Label1.Text.Length < 13
           Label1.Text = Label1.Text & " "
       Loop
       Label1.AutoSize = True
       Timer1.Start()
   End Sub
   Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
       Timer1.Stop()
   End Sub
   Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click
       End
   End Sub
   Private Sub Timer1_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer1.Tick
       Label1.Text = Microsoft.VisualBasic.Right(Label1.Text, 1) & Microsoft.VisualBasic.Left(Label1.Text, Label1.Text.Length - 1)
   End Sub

End Class</source>

Snow Animation

<source lang="vbnet">"Visual Basic.Net JingCai Programming 100 Examples "Author: Yong Zhang "Publisher: Water Publisher China "ISBN: 750841156

Imports System.Drawing Imports System.Drawing.Drawing2D Imports System.Windows.Forms public class Snow

  public Shared Sub Main
       Application.Run(New Form1)
  End Sub

End class Public Class Form1

   Inherits System.Windows.Forms.Form
   Public Sub New()
       MyBase.New()
       InitializeComponent()
   End Sub
   Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
       If disposing Then
           If Not (components Is Nothing) Then
               components.Dispose()
           End If
       End If
       MyBase.Dispose(disposing)
   End Sub
   Private components As System.ruponentModel.IContainer
   Friend WithEvents PictureBox1 As System.Windows.Forms.PictureBox
   Friend WithEvents Timer1 As System.Windows.Forms.Timer
   <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
       Me.ruponents = New System.ruponentModel.Container
       Me.PictureBox1 = New System.Windows.Forms.PictureBox
       Me.Timer1 = New System.Windows.Forms.Timer(Me.ruponents)
       Me.SuspendLayout()
       "
       "PictureBox1
       "
       Me.PictureBox1.Dock = System.Windows.Forms.DockStyle.Fill
       Me.PictureBox1.Location = New System.Drawing.Point(0, 0)
       Me.PictureBox1.Name = "PictureBox1"
       Me.PictureBox1.Size = New System.Drawing.Size(292, 266)
       Me.PictureBox1.TabIndex = 0
       Me.PictureBox1.TabStop = False
       "
       "Timer1
       "
       Me.Timer1.Enabled = True
       Me.Timer1.Interval = 10
       "
       "Form1
       "
       Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
       Me.ClientSize = New System.Drawing.Size(292, 266)
       Me.Controls.Add(Me.PictureBox1)
       Me.WindowState = System.Windows.Forms.FormWindowState.Maximized
       Me.ResumeLayout(False)
   End Sub
   Dim number, x(), y(), v(), s() As Integer
   Dim t As Random = New Random
   Dim g As System.Drawing.Graphics
   Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
       PictureBox1.Location = Me.Location
       PictureBox1.Size = Me.Size
       PictureBox1.SizeMode = PictureBoxSizeMode.StretchImage
       snow()
   End Sub
   Private Sub snow()
       number = 2000
       ReDim x(number - 1)
       ReDim y(number - 1)
       ReDim v(number - 1)
       ReDim s(number - 1)
       Dim i As Integer
       For i = 0 To number - 1
           Insnow(i)
       Next
   End Sub
   Private Sub Insnow(ByVal i As Integer)
       x(i) = t.Next(0, Me.Width - 1)
       y(i) = t.Next(0, Me.Height * 5 / 7)
       v(i) = t.Next(5, 20)
       s(i) = (t.Next(1, 3) * 100 + t.Next(50, 200)) / 100
   End Sub
   Private Sub PictureBox1_Paint(ByVal sender As Object, ByVal e As System.Windows.Forms.PaintEventArgs) Handles PictureBox1.Paint
       g = PictureBox1.CreateGraphics
       Dim i As Integer
       For i = 0 To number - 1
           g.FillEllipse(Brushes.White, x(i), y(i), s(i), s(i))
       Next
   End Sub
   Private Sub Timer1_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer1.Tick
       Dim i As Integer
       For i = 0 To number - 1
           y(i) = y(i) + v(i)
           If y(i) >= Me.Height Then
               Insnow(i)
           End If
       Next
       PictureBox1.Invalidate()
   End Sub

End Class</source>