Using paths to draw stars on the form : Star « 2D Graphics « VB.Net Tutorial

1. VB.Net Tutorial
2. 2D Graphics
3. Star

Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Windows.Forms

public class DrawStarsForm
   public Shared Sub Main
        Application.Run(New FrmDrawStars)
   End Sub
End class

Public Class FrmDrawStars
   Inherits System.Windows.Forms.Form

#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.ComponentModel.Container

   '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()
      '
      'frmDrawStars
      '
      Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
      Me.BackColor = System.Drawing.SystemColors.ControlLight
      Me.ClientSize = New System.Drawing.Size(500, 500)
      Me.Name = "frmDrawStars"
      Me.Text = "Drawing Stars"

   End Sub

#End Region

   Protected Overrides Sub OnPaint(ByVal e As PaintEventArgs)
      Dim graphicsObject As Graphics = e.Graphics
      Dim i As Integer
      Dim random As Random = New Random()
      Dim brush As SolidBrush = New SolidBrush(Color.DarkMagenta)

      Dim xPoints As Integer() = {55, 67, 109, 73, 83, 55, 27, 37, 1, 43}
      Dim yPoints As Integer() = {0, 36, 36, 54, 96, 72, 96, 54, 36, 36}

      Dim star As GraphicsPath = New GraphicsPath()

      graphicsObject.TranslateTransform(250, 250)

      For i = 0 To 8 Step 2
         star.AddLine(xPoints(i), yPoints(i), _
            xPoints(i + 1), yPoints(i + 1))
      Next

      star.CloseFigure()

      For i = 1 To 200
         graphicsObject.RotateTransform(2)

         brush.Color = Color.FromArgb(i , i , i , i )

         graphicsObject.FillPath(brush, star)
      Next

   End Sub

End Class

17.11.Star
	17.11.1.	Using paths to draw stars on the form