VB.Net/2D/Pen

Draw Curve with Different pens

Imports System
Imports System.Windows.Forms
Imports System.Drawing.Text
Imports System.Drawing
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
        " Define the curve"s control points.
        Dim pts() As Point = { _
            New Point(200, 30), _
            New Point(200, 150), _
            New Point(10, 50), _
            New Point(250, 200), _
            New Point(20, 200), _
            New Point(250, 50), _
            New Point(100, 250) _
        }
        " Draw the closed curve.
        e.Graphics.SmoothingMode = Drawing2D.SmoothingMode.HighQuality
        For tension As Single = 0 To 2 Step 0.25
            Dim curve_pen As New Pen(Color.Black, tension * 4 + 1)
            e.Graphics.DrawClosedCurve(curve_pen, pts, tension, _
                Drawing2D.FillMode.Alternate)
        Next tension
        " Draw rectangles on the control points.
        For i As Integer = 0 To pts.Length - 1
            e.Graphics.FillRectangle(Brushes.White, pts(i).X - 2, pts(i).Y - 2, 5, 5)
            e.Graphics.DrawRectangle(Pens.Black, pts(i).X - 2, pts(i).Y - 2, 5, 5)
        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(364, 309)
        Me.Name = "Form1"
        Me.Text = "Title"
        Me.ResumeLayout(False)
    End Sub
End Class

Draw thick rectangle outline in red

Imports System
Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Windows.Forms
Imports System.Drawing.Text
Public Class MainClass
   Shared Sub Main()
        Dim myform As Form = New FrmDrawShapes()
        Application.Run(myform)
   End Sub " Main
End Class

Public Class FrmDrawShapes
   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
   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.Container
   "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()
      "
      "frmDrawShapes
      "
      Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
      Me.ClientSize = New System.Drawing.Size(520, 197)
      Me.Name = "frmDrawShapes"
      Me.Text = "Drawing Shapes"
   End Sub
#End Region
   " draw various shapes on form
   Protected Overrides Sub OnPaint(ByVal e As PaintEventArgs)
      " references to object we will use
      Dim graphicsObject As Graphics = e.Graphics
      " pen and location for red outline rectangle
      Dim thickRedPen As Pen = New Pen(Color.Red, 10)
      Dim drawArea2 As Rectangle = New Rectangle(80, 30, 65, 100)
      " draw thick rectangle outline in red
      graphicsObject.DrawRectangle(thickRedPen, drawArea2)
   End Sub " OnPaint
End Class

Draw with Pen Compound Array

Imports System.Drawing.Drawing2D
Imports System
Imports System.Drawing.Text
Imports System.Drawing
Imports System.Windows.Forms

Public Class MainClass
   Shared Sub Main()
       Dim form1 As Form = New Form1()
       Application.Run(form1)
   End Sub " ValidationError
End Class
 
 

Public Class Form1
    Private Sub Form1_Paint(ByVal sender As Object, _
     ByVal e As System.Windows.Forms.PaintEventArgs) Handles Me.Paint
        Dim the_pen As New Pen(Color.Black, 10)
        the_pen.rupoundArray = New Single() {0.0, 0.2, 0.4, 0.6, 0.8, 1.0}
        e.Graphics.DrawRectangle(the_pen, 20, 50, 100, 100)
        e.Graphics.DrawEllipse(the_pen, 150, 50, 100, 100)
    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(292, 273)
        Me.Name = "Form1"
        Me.Text = "TransformArrow"
        Me.ResumeLayout(False)
    End Sub
End Class

Pen Compound Array Demo 1

Imports System.Drawing.Drawing2D
Imports System
Imports System.Drawing.Text
Imports System.Drawing
Imports System.Windows.Forms

Public Class MainClass
   Shared Sub Main()
       Dim form1 As Form = New Form1()
       Application.Run(form1)
   End Sub " ValidationError
End Class
 
 

Public Class Form1
    Private Sub Form1_Paint(ByVal sender As Object, _
     ByVal e As System.Windows.Forms.PaintEventArgs) Handles Me.Paint
        Dim the_pen As New Pen(Color.Black, 10)
        the_pen.rupoundArray = New Single() {0.0, 0.45, 0.55, 1.0}
        e.Graphics.DrawLine(the_pen, 10, 20, 400, 20)
    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(292, 273)
        Me.Name = "Form1"
        Me.Text = "TransformArrow"
        Me.ResumeLayout(False)
    End Sub
End Class

Pen"s Compound Array

Imports System
Imports System.Windows.Forms
Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Drawing.Text

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
#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.SuspendLayout()
    "
    "Form1
    "
    Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
    Me.ClientSize = New System.Drawing.Size(392, 213)
    Me.Controls.AddRange(New System.Windows.Forms.Control() {})
    Me.Name = "Form1"
    Me.Text = "Form1"
    Me.ResumeLayout(False)
  End Sub
#End Region
  Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
  End Sub
  Protected Overrides Sub OnPaint(ByVal e As PaintEventArgs)
    Dim G As Graphics = e.Graphics
    Dim P1 As Pen = New Pen(Color.Blue, 10)
    "compoundarray
    Dim P3 As Pen = New Pen(Color.Blue, 20)
    Dim lines() As Single = {0.0, 0.1, 0.9, 1.0}
    P3.rupoundArray = lines
    G.DrawLine(P3, 20, CInt(Me.Height / 2), Me.Width - 20, CInt(Me.Height / 2))
  End Sub
End Class

Pen width Demo

Imports System.Drawing.Drawing2D
Imports System
Imports System.Drawing.Text
Imports System.Drawing
Imports System.Windows.Forms

Public Class MainClass
   Shared Sub Main()
       Dim form1 As Form = New Form1()
       Application.Run(form1)
   End Sub " ValidationError
End Class
 
 

Public Class Form1
    Private Sub Form1_Paint(ByVal sender As Object, _
     ByVal e As System.Windows.Forms.PaintEventArgs) Handles Me.Paint
        Dim the_pen As New Pen(Color.Black, 1)
        e.Graphics.DrawLine(the_pen, 50, 10, 200, 10)
        the_pen.Width = 5
        e.Graphics.DrawLine(the_pen, 50, 40, 200, 40)
        the_pen.Width = 10
        e.Graphics.DrawLine(the_pen, 50, 100, 200, 100)
        the_pen.Width = 20
        e.Graphics.DrawLine(the_pen, 50, 200, 200, 200)
    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(292, 273)
        Me.Name = "Form1"
        Me.Text = "TransformArrow"
        Me.ResumeLayout(False)
    End Sub
End Class

Transformed Pen

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 MyBase.Paint
        Const Cx As Integer = 120
        Const Cy As Integer = 120
        Const R As Integer = 100
        Const PEN_WID As Integer = 10
        Dim the_pen As New Pen(Color.Black, PEN_WID)
        the_pen.ScaleTransform(1, 4, MatrixOrder.Append)
        the_pen.RotateTransform(45, MatrixOrder.Append)
        e.Graphics.SmoothingMode = SmoothingMode.AntiAlias
        e.Graphics.ScaleTransform(1, 4, MatrixOrder.Append)
        e.Graphics.RotateTransform(45, MatrixOrder.Append)
        For angle As Single = 0 To 2 * PI Step PI / 8
            Dim graphics_state As GraphicsState = e.Graphics.Save
            e.Graphics.TranslateTransform( _
                CSng(Cx + R * Cos(angle)), _
                CSng(Cy + R * Sin(angle)), _
                MatrixOrder.Append)
            e.Graphics.DrawEllipse(Pens.White, -PEN_WID , -PEN_WID , PEN_WID, PEN_WID)
            e.Graphics.Restore(graphics_state)
        Next angle
    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 = ""
        Me.ResumeLayout(False)
    End Sub
End Class