VB.Net/2D/Star

Fill a star shape

Imports System.Drawing.Drawing2D
Imports System
Imports System.Drawing.Text
Imports System.Drawing
Imports System.Windows.Forms
Imports System.Math
Public Class MainClass
   Shared Sub Main()
       Dim form1 As Form = New Form1()
       Application.Run(form1)
   End Sub 
End Class
 
Public Class Form1
    Private Sub Form1_Paint(ByVal sender As Object, _
     ByVal e As System.Windows.Forms.PaintEventArgs) Handles Me.Paint
        Dim x As Integer = 10
        Dim y As Integer = 10
        Dim wid As Integer = 150
        Dim hgt As Integer = 150
        " Fill a star shape.
        Dim cx As Integer = x + wid \ 2
        Dim cy As Integer = y + hgt \ 2
        Dim r1 As Integer = CInt(wid * 0.5)
        Dim r2 As Integer = CInt(hgt * 0.25)
        Dim star_pts(9) As Point
        For i As Integer = 0 To 9 Step 2
            star_pts(i).X = cx + CInt(r1 * Cos(i * PI / 5 - PI / 2))
            star_pts(i).Y = cy + CInt(r1 * Sin(i * PI / 5 - PI / 2))
            star_pts(i + 1).X = cx + CInt(r2 * Cos((i + 1) * PI / 5 - PI / 2))
            star_pts(i + 1).Y = cy + CInt(r2 * Sin((i + 1) * PI / 5 - PI / 2))
        Next i
        Dim star_path As New GraphicsPath
        star_path.AddPolygon(star_pts)
        Dim star_brush As New PathGradientBrush(star_pts)
        star_brush.CenterColor = Color.Black
        star_brush.SurroundColors = New Color() { _
            Color.Black, Color.White, _
            Color.Black, Color.White, _
            Color.Black, Color.White, _
            Color.Black, Color.White, _
            Color.Black, Color.White _
        }
        e.Graphics.FillPolygon(star_brush, star_pts)
    End Sub
End Class
 
 
<Global.Microsoft.VisualBasic.rupilerServices.DesignerGenerated()> _
Partial Public Class Form1
    Inherits System.Windows.Forms.Form
    "Form overrides dispose to clean up the component list.
    <System.Diagnostics.DebuggerNonUserCode()> _
    Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
        If disposing AndAlso components IsNot Nothing Then
            components.Dispose()
        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()
        Me.SuspendLayout()
        "
        "Form1
        "
        Me.AutoScaleDimensions = New System.Drawing.SizeF(6.0!, 13.0!)
        Me.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font
        Me.ClientSize = New System.Drawing.Size(200, 200)
        Me.Name = "Form1"
        Me.Text = ""
        Me.ResumeLayout(False)
    End Sub
End Class

GraphicsPath: Draw Star

Imports System
Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Windows.Forms
Imports System.Drawing.Text
Public Class MainClass
   Shared Sub Main()
        Dim myform As Form = New FrmDrawShapes()
        Application.Run(myform)
   End Sub " Main
End Class

Public Class FrmDrawShapes
   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.ruponentModel.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()
      "
      "frmDrawShapes
      "
      Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
      Me.ClientSize = New System.Drawing.Size(520, 197)
      Me.Name = "frmDrawShapes"
      Me.Text = "Drawing Shapes"
   End Sub
#End Region
   " draw various shapes on form
   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)
      " x and y points of the path
      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}
      " create graphics path for star
      Dim star As GraphicsPath = New GraphicsPath()
      " translate the origin to (150, 150)
      graphicsObject.TranslateTransform(150, 150)
      " create star from series of points
      For i = 0 To 8 Step 2
         star.AddLine(xPoints(i), yPoints(i), _
            xPoints(i + 1), yPoints(i + 1))
      Next
      " close the shape
      star.CloseFigure()
      graphicsObject.FillPath(brush, star)
   End Sub " OnPaint
End Class