VB.Net/2D/Clip

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Clip Combine Mode Intersect

<source lang="vbnet"> Imports System Imports System.Windows.Forms Imports System.Drawing Imports System.Drawing.Drawing2D

Public Class MainClass 

 Shared Sub Main()
    Dim form1 As Form1 = new Form1
    Application.Run(form1)
 End Sub

End Class Public Class Form1 

 Inherits System.Windows.Forms.Form
  1. 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
 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.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.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
   Me.ClientSize = New System.Drawing.Size(352, 273)
   Me.Name = "Form1"
   Me.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen
   Me.Text = "Form1"
   Me.ResumeLayout(False)
 End Sub
  1. End Region
  Protected Overrides Sub OnPaint(ByVal e As PaintEventArgs)
   Dim G As Graphics = Me.CreateGraphics
   Dim R As New Rectangle(40.0F, 20.0F, 100.0F, 100.0F)
   Dim R2 As New Rectangle(60.0F, 20.0F, 120.0F, 120.0F)
   Dim P1 As New GraphicsPath()
   Dim P2 As New GraphicsPath()
   G.Clear(Color.Gainsboro)
   P1.AddEllipse(R)
   G.DrawPath(Pens.Black, P1)
   P2.AddEllipse(R2)
   G.DrawPath(Pens.Black, P2)
   G.SetClip(P1)
   G.SetClip(P2, CombineMode.Intersect)
   " Draw some clipped strings.
   Dim F As New Font("Arial", 16)
   G.DrawString("www.vbex.ru", F, Brushes.DeepPink, 15, 25)
 End Sub

End Class 

      </source>


Exclude Clip Path Region

<source lang="vbnet"> Imports System Imports System.Windows.Forms Imports System.Drawing Imports System.Drawing.Drawing2D

Public Class MainClass 

 Shared Sub Main()
    Dim form1 As Form1 = new Form1
    Application.Run(form1)
 End Sub

End Class Public Class Form1 

 Inherits System.Windows.Forms.Form
  1. 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
 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.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.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
   Me.ClientSize = New System.Drawing.Size(352, 273)
   Me.Name = "Form1"
   Me.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen
   Me.Text = "Form1"
   Me.ResumeLayout(False)
 End Sub
  1. End Region
  Protected Overrides Sub OnPaint(ByVal e As PaintEventArgs)
   Dim G As Graphics = Me.CreateGraphics
   Dim R As New Rectangle(40.0F, 20.0F, 100.0F, 100.0F)
   Dim path As New GraphicsPath()
   G.Clear(Color.Gainsboro)
   path.AddEllipse(R)
   G.DrawPath(Pens.Black, path)
   G.ExcludeClip(New Region(path))
   " Draw some clipped strings.
   Dim F As New Font("Arial", 16)
   G.DrawString("www.vbex.ru", F, Brushes.DeepPink, 15, 25)
 End Sub

End Class 

      </source>


Graphics Path Clip Region

<source lang="vbnet"> Imports System Imports System.Windows.Forms Imports System.Drawing Imports System.Drawing.Drawing2D

Public Class MainClass 

 Shared Sub Main()
    Dim form1 As Form1 = new Form1
    Application.Run(form1)
 End Sub

End Class Public Class Form1 

 Inherits System.Windows.Forms.Form
  1. 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
 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.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.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
   Me.ClientSize = New System.Drawing.Size(352, 273)
   Me.Name = "Form1"
   Me.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen
   Me.Text = "Form1"
   Me.ResumeLayout(False)
 End Sub
  1. End Region
  Protected Overrides Sub OnPaint(ByVal e As PaintEventArgs)
   Dim G As Graphics = Me.CreateGraphics
   Dim R As New Rectangle(20.0F, 20.0F, 100.0F, 100.0F)
   Dim path As New GraphicsPath()
   G.Clear(Color.Gainsboro)
   path.AddEllipse(R)
   G.DrawPath(Pens.Black, path)
   G.SetClip(path)
   Dim F As New Font("Arial", 16)
   G.DrawString("www.vbex.ru", F, Brushes.DeepPink, 15, 25)
 End Sub

End Class 

      </source>


Rectangle clipped to Ellipse

<source lang="vbnet"> Imports System Imports System.ruponentModel Imports System.Windows.Forms Imports System.Data Imports System.Configuration Imports System.Drawing Imports System.Drawing.Drawing2D Imports System.Drawing.Text Imports System.Globalization Imports System.Text Imports System.Collections Public Class MainClass 

   Shared Sub Main()
       
       Dim myform As Form = New ClippingRegionForm()
       Application.Run(myform)
   End Sub

End Class

Public Class ClippingRegionForm 

   Inherits System.Windows.Forms.Form
  1. 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
   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.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()
       components = New System.ruponentModel.Container()
       Me.Text = "ClippingRegionForm"
   End Sub
  1. End Region
   Private Sub ClippingRegionForm_Paint(ByVal sender As Object, ByVal e As System.Windows.Forms.PaintEventArgs) Handles MyBase.Paint
       Dim g As Graphics = e.Graphics
       Dim path As GraphicsPath = New GraphicsPath()
       path.AddEllipse(Me.ClientRectangle)
       Dim region As Region = New Region(path)
       g.DrawPath(Pens.Red, path)
       g.Clip = region
       Dim rect As Rectangle = Me.ClientRectangle
       rect.Offset(20, 20)
       rect.Width = rect.Width - 40
       rect.Height = rect.Height - 40
       g.FillRectangle(Brushes.Black, rect)
   End Sub

End Class 

      </source>


Rectangle Clip Region

<source lang="vbnet"> Imports System Imports System.Windows.Forms Imports System.Drawing Imports System.Drawing.Drawing2D

Public Class MainClass 

 Shared Sub Main()
    Dim form1 As Form1 = new Form1
    Application.Run(form1)
 End Sub

End Class Public Class Form1 

 Inherits System.Windows.Forms.Form
  1. 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
 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.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.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
   Me.ClientSize = New System.Drawing.Size(352, 273)
   Me.Name = "Form1"
   Me.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen
   Me.Text = "Form1"
   Me.ResumeLayout(False)
 End Sub
  1. End Region
  Protected Overrides Sub OnPaint(ByVal e As PaintEventArgs)
   Dim G As Graphics = Me.CreateGraphics
   Dim R As New Rectangle(50.0F, 50.0F, 100.0F, 100.0F)
   G.Clear(Color.Gainsboro)
   G.DrawRectangle(Pens.Black, R)
   G.Clip = New Region(R)
   G.DrawLine(Pens.Blue, 0, 75, Me.Width, 75)
   G.FillEllipse(Brushes.LawnGreen, New Rectangle(75, 75, 150, 150))
 End Sub

End Class 

      </source>


SetClip Demo

<source lang="vbnet"> Imports System Imports System.Windows.Forms Imports System.Drawing.Text Imports System.Drawing Imports System.Drawing.Drawing2D Public Class MainClass 

   Shared Sub Main(ByVal args As String())
       Dim myform As Form = New Form1()
       Application.Run(myform)
   End Sub

End Class

Public Class Form1 

   Private Sub Form1_Paint(ByVal sender As Object, ByVal e As System.Windows.Forms.PaintEventArgs) Handles MyBase.Paint
       Dim txt As String = "www.vbex.ru"
       Dim graphics_path As New GraphicsPath
       graphics_path.AddString(txt, _
           New FontFamily("Times New Roman"), _
           FontStyle.Bold, 150, _
           New Point(0, 0), _
           New StringFormat)
       e.Graphics.SetClip(graphics_path)
       e.Graphics.FillRectangle(Brushes.White, Me.ClientRectangle)
       Dim rnd As New Random
       Dim x1, y1, x2, y2 As Integer
       For i As Integer = 1 To 800
           x1 = rnd.Next(0, Me.ClientSize.Width - 1)
           y1 = rnd.Next(0, Me.ClientSize.Height - 1)
           x2 = rnd.Next(0, Me.ClientSize.Width - 1)
           y2 = rnd.Next(0, Me.ClientSize.Height - 1)
           e.Graphics.DrawLine(Pens.Black, x1, y1, x2, y2)
       Next i
   End Sub

End Class

<Global.Microsoft.VisualBasic.rupilerServices.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.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(200, 200)
       Me.Name = "Form1"
       Me.Text = "Title"
       Me.ResumeLayout(False)
   End Sub

End Class 

      </source>
Источник — «http://vbex.ru/index.php?title=VB.Net/2D/Clip&oldid=105»