VB.Net Tutorial/2D Graphics/FillMode
Draw star with Drawing2D.FillMode.Alternate
<source lang="vbnet">Imports System.Drawing Imports System.Drawing.Drawing2D Imports System.Windows.Forms public class DrawStart5Alternate
public Shared Sub Main Application.Run(New 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 canvas As Graphics = e.Graphics Dim starPoints(4) As Point Dim angle As Double Dim radians As Double Dim pointX As Double Dim pointY As Double Dim counter As Integer Const pointDistance As Double = 50 Const angleStart As Integer = 198 Const angleRotation As Integer = 144 angle = angleStart For counter = 0 To 4 angle += angleRotation radians = angle * Math.PI / 180 pointX = Math.Cos(radians) * pointDistance +200 pointY = Math.Sin(radians) * pointDistance +200 starPoints(counter) = New Point(CInt(pointX), CInt(pointY)) Next counter canvas.FillPolygon(Brushes.DarkRed, starPoints, Drawing2D.FillMode.Alternate) End Sub
End Class
<Global.Microsoft.VisualBasic.rupilerServices.DesignerGenerated()> _ Partial Class Form1
Inherits System.Windows.Forms.Form "Form overrides dispose to clean up the component list. <System.Diagnostics.DebuggerNonUserCode()> _ Protected 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(469, 387) Me.Name = "Form1" Me.Text = "Redrawing by Invalidating" Me.ResumeLayout(False) End Sub
End Class</source>
Draw star with Drawing2D.FillMode.Winding
<source lang="vbnet">Imports System.Drawing Imports System.Drawing.Drawing2D Imports System.Windows.Forms public class DrawStart5Winding
public Shared Sub Main Application.Run(New 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 canvas As Graphics = e.Graphics Dim starPoints(4) As Point Dim angle As Double Dim radians As Double Dim pointX As Double Dim pointY As Double Dim counter As Integer Const pointDistance As Double = 50 Const angleStart As Integer = 198 Const angleRotation As Integer = 144 angle = angleStart For counter = 0 To 4 angle += angleRotation radians = angle * Math.PI / 180 pointX = Math.Cos(radians) * pointDistance +200 pointY = Math.Sin(radians) * pointDistance +200 starPoints(counter) = New Point(CInt(pointX), CInt(pointY)) Next counter canvas.FillPolygon(Brushes.DarkRed, starPoints, Drawing2D.FillMode.Winding) End Sub
End Class
<Global.Microsoft.VisualBasic.rupilerServices.DesignerGenerated()> _ Partial Class Form1
Inherits System.Windows.Forms.Form "Form overrides dispose to clean up the component list. <System.Diagnostics.DebuggerNonUserCode()> _ Protected 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(469, 387) Me.Name = "Form1" Me.Text = "Redrawing by Invalidating" Me.ResumeLayout(False) End Sub
End Class</source>