Fill a star shape : Star « 2D « VB.Net






Fill a star shape

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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