Draw star with Drawing2D.FillMode.Winding : FillMode « 2D Graphics « VB.Net Tutorial






Draw star with Drawing2D.FillMode.Winding
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.CompilerServices.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.ComponentModel.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








17.84.FillMode
17.84.1.Draw star with Drawing2D.FillMode.AlternateDraw star with Drawing2D.FillMode.Alternate
17.84.2.Draw star with Drawing2D.FillMode.WindingDraw star with Drawing2D.FillMode.Winding