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.CompilerServices.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.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(200, 200)
Me.Name = "Form1"
Me.Text = ""
Me.ResumeLayout(False)
End Sub
End Class
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