Closed Bezier Path Demo

Imports System
Imports System.Collections
Imports System.ComponentModel
Imports System.Windows.Forms
Imports System.Data
Imports System.Configuration
Imports System.Resources
Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Drawing.Imaging

Public Class MainClass
    Shared Sub Main()
        Dim myform As Form = New Form1()
        Application.Run(myform)
    End Sub
End Class

Public Class Form1
    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
        Me.SetStyle(ControlStyles.ResizeRedraw, True)
        Me.SetStyle(ControlStyles.DoubleBuffer, True)
        Me.SetStyle(ControlStyles.AllPaintingInWmPaint, True)
    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.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()
        components = New System.ComponentModel.Container()
        Me.Text = "Form1"
    End Sub

#End Region

   
    Private Function GetClosedBezierPath(ByVal rect As Rectangle, ByVal points As Point()) As GraphicsPath
        Dim path As GraphicsPath = New GraphicsPath()
        path.AddBeziers(points)
        path.CloseFigure()
        Return path
    End Function


    Private Sub Form1_Paint(ByVal sender As Object, ByVal e As PaintEventArgs) Handles MyBase.Paint
        Dim g As Graphics = e.Graphics
        Dim width As Integer = Me.ClientRectangle.Width
        Dim height As Integer = Me.ClientRectangle.Height
        Dim rect As Rectangle = New Rectangle(10, 10, width - 20, height - 20)
        Dim format As StringFormat = New StringFormat()
        format.Alignment = StringAlignment.Center
        format.LineAlignment = StringAlignment.Center
        Dim path As GraphicsPath = GetClosedBezierPath(rect, New Point() {New Point(25, height - 25), New Point(width - 25, height - 25), New Point(25, 25), New Point(width - 25, 25)})
        g.FillPath(Brushes.Yellow, path)
        g.DrawPath(Pens.Black, path)

    End Sub
End Class
Related examples in the same category

1.	Draw Bezier
2.	Draw Beziers Curves
3.	Beziers Curve Demo
Closed Bezier Path Demo : Bezier « 2D « VB.Net

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