VB.Net/2D/Scale

Matrix Scale Demo

<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 MatrixMarginsForm()
       Application.Run(myform)
   End Sub

End Class

Public Class MatrixMarginsForm

   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.
   Friend WithEvents statusBar1 As System.Windows.Forms.StatusBar
   <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
       Me.statusBar1 = New System.Windows.Forms.StatusBar()
       Me.SuspendLayout()
       "
       "statusBar1
       "
       Me.statusBar1.Location = New System.Drawing.Point(0, 244)
       Me.statusBar1.Name = "statusBar1"
       Me.statusBar1.Size = New System.Drawing.Size(292, 22)
       Me.statusBar1.TabIndex = 1
       Me.statusBar1.Text = "statusBar1"
       "
       "MatrixMarginsForm
       "
       Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
       Me.ClientSize = New System.Drawing.Size(292, 266)
       Me.Controls.AddRange(New System.Windows.Forms.Control() {Me.statusBar1})
       Me.Name = "MatrixMarginsForm"
       Me.Text = "MatrixMarginsForm"
       Me.ResumeLayout(False)
   End Sub

1. End Region

   Sub ScaleExample(ByVal e As PaintEventArgs)
       Dim myPen As Pen = New Pen(Color.Blue, 1)
       Dim myPen2 As Pen = New Pen(Color.Red, 1)
       e.Graphics.DrawRectangle(myPen, 5, 5, 10, 10)
       Dim myMatrix As Matrix = New Matrix()
       myMatrix.Scale(3, 2, MatrixOrder.Append)
       e.Graphics.Transform = myMatrix
       e.Graphics.DrawRectangle(myPen2, 5, 5, 10, 10)
   End Sub
   Sub Margins_Paint(ByVal sender As Object, ByVal e As PaintEventArgs) Handles MyBase.Paint
       ScaleExample(e)
   End Sub

End Class

      </source>

==Scale:/td>

<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 ScalingFontsForm()
       Application.Run(myform)
   End Sub

End Class

Public Class ScalingFontsForm

   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()
       "
       "ScalingFontsForm
       "
       Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
       Me.ClientSize = New System.Drawing.Size(512, 70)
       Me.Name = "ScalingFontsForm"
       Me.Text = "ScalingFontsForm"
   End Sub

1. End Region

   Sub ScalingFontsForm_Paint(ByVal sender As Object, ByVal e As PaintEventArgs) Handles MyBase.Paint
       Dim g As Graphics = e.Graphics
       Dim x As Integer = 0
       Dim y As Integer = 0
       Dim width As Integer = Me.ClientRectangle.Width
       Dim height As Integer = Me.ClientRectangle.Height
       Dim format As StringFormat = New StringFormat()
       format.Alignment = StringAlignment.Center
       format.LineAlignment = StringAlignment.Center
       Dim matrix As Matrix = New Matrix()
       g.ResetTransform()
       g.DrawRectangle(Pens.Black, x, y, width, height)
       matrix.Reset()
       matrix.Scale(1, 1)
       g.Transform = matrix
       g.DrawString("Scale(1,1)", Me.Font, Brushes.Black, New RectangleF(x, y, width, height), format)
       x = IIf(x > Me.ClientRectangle.Width - 2 * width, 0, x + width)
       y = IIf(x = 0, y + height, y)
   End Sub

End Class

      </source>

==Scale:/td>

<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 ScalingFontsForm()
       Application.Run(myform)
   End Sub

End Class

Public Class ScalingFontsForm

   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()
       "
       "ScalingFontsForm
       "
       Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
       Me.ClientSize = New System.Drawing.Size(512, 70)
       Me.Name = "ScalingFontsForm"
       Me.Text = "ScalingFontsForm"
   End Sub

1. End Region

   Sub ScalingFontsForm_Paint(ByVal sender As Object, ByVal e As PaintEventArgs) Handles MyBase.Paint
       Dim g As Graphics = e.Graphics
       Dim x As Integer = 0
       Dim y As Integer = 0
       Dim width As Integer = Me.ClientRectangle.Width
       Dim height As Integer = Me.ClientRectangle.Height
       Dim format As StringFormat = New StringFormat()
       format.Alignment = StringAlignment.Center
       format.LineAlignment = StringAlignment.Center
       Dim matrix As Matrix = New Matrix()
       g.ResetTransform()
       g.DrawRectangle(Pens.Black, x, y, width, height)
       matrix.Reset()
       matrix.Scale(1, 3)
       g.Transform = matrix
       g.DrawString("Scale(1,3)", Me.Font, Brushes.Black, New RectangleF(x, y / 3.0F, width, height / 3.0F), format)
       x = IIf(x > Me.ClientRectangle.Width - 2 * width, 0, x + width)
       y = IIf(x = 0, y + height, y)
   End Sub

End Class

      </source>

==Scale:/td>

<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 ScalingFontsForm()
       Application.Run(myform)
   End Sub

End Class

Public Class ScalingFontsForm

   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()
       "
       "ScalingFontsForm
       "
       Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
       Me.ClientSize = New System.Drawing.Size(512, 70)
       Me.Name = "ScalingFontsForm"
       Me.Text = "ScalingFontsForm"
   End Sub

1. End Region

   Sub ScalingFontsForm_Paint(ByVal sender As Object, ByVal e As PaintEventArgs) Handles MyBase.Paint
       Dim g As Graphics = e.Graphics
       Dim x As Integer = 0
       Dim y As Integer = 0
       Dim width As Integer = Me.ClientRectangle.Width
       Dim height As Integer = Me.ClientRectangle.Height
       Dim format As StringFormat = New StringFormat()
       format.Alignment = StringAlignment.Center
       format.LineAlignment = StringAlignment.Center
       Dim matrix As Matrix = New Matrix()
       g.ResetTransform()
       g.DrawRectangle(Pens.Black, x, y, width, height)
       matrix.Reset()
       matrix.Scale(3, 1)
       g.Transform = matrix
       g.DrawString("Scale(3,1)", Me.Font, Brushes.Black, New RectangleF(x / 3.0F, y, width / 3.0F, height), format)
       x = IIf(x > Me.ClientRectangle.Width - 2 * width, 0, x + width)
       y = IIf(x = 0, y + height, y)
   End Sub

End Class

      </source>

Scale by a factor of 30

<source lang="vbnet"> Imports System.Drawing.Drawing2D Imports System 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 MyBase.Paint
       " Scale by a factor of 30.
       e.Graphics.ScaleTransform(30, 30, MatrixOrder.Append)
       DrawArrow(e.Graphics, HatchStyle.Horizontal)
   End Sub
   " Draw an arrow outline.
   Private Sub DrawArrow(ByVal gr As Graphics, ByVal hatch_style As HatchStyle)
       Dim pts() As Point = { _
           New Point(0, 1), _
           New Point(2, 1), _
           New Point(2, 0), _
           New Point(4, 2), _
           New Point(2, 4), _
           New Point(2, 3), _
           New Point(0, 3) _
       }
       gr.FillPolygon(New HatchBrush(hatch_style, Color.Black, Color.White), pts)
       gr.DrawPolygon(New Pen(Color.Black, 0), pts)
   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

      </source>

Scale by a factor of 30 and Rotate 30 degrees

<source lang="vbnet"> Imports System.Drawing.Drawing2D Imports System 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 MyBase.Paint
       e.Graphics.ScaleTransform(30, 30, MatrixOrder.Append)
       " Rotate 30 degrees.
       e.Graphics.RotateTransform(30, MatrixOrder.Append)
       DrawArrow(e.Graphics, HatchStyle.Cross)
   End Sub
   " Draw an arrow outline.
   Private Sub DrawArrow(ByVal gr As Graphics, ByVal hatch_style As HatchStyle)
       Dim pts() As Point = { _
           New Point(0, 1), _
           New Point(2, 1), _
           New Point(2, 0), _
           New Point(4, 2), _
           New Point(2, 4), _
           New Point(2, 3), _
           New Point(0, 3) _
       }
       gr.FillPolygon(New HatchBrush(hatch_style, Color.Black, Color.White), pts)
       gr.DrawPolygon(New Pen(Color.Black, 0), pts)
   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

      </source>

Scale by a factor of 30 and Translate 150 horizontally and 60 vertically

<source lang="vbnet"> Imports System.Drawing.Drawing2D Imports System 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 MyBase.Paint
       " Translate 150 horizontally and 60 vertically.
       e.Graphics.ScaleTransform(30, 30, MatrixOrder.Append)
       e.Graphics.TranslateTransform(150, 60, MatrixOrder.Append)
       DrawArrow(e.Graphics, HatchStyle.Vertical)
   End Sub
   " Draw an arrow outline.
   Private Sub DrawArrow(ByVal gr As Graphics, ByVal hatch_style As HatchStyle)
       Dim pts() As Point = { _
           New Point(0, 1), _
           New Point(2, 1), _
           New Point(2, 0), _
           New Point(4, 2), _
           New Point(2, 4), _
           New Point(2, 3), _
           New Point(0, 3) _
       }
       gr.FillPolygon(New HatchBrush(hatch_style, Color.Black, Color.White), pts)
       gr.DrawPolygon(New Pen(Color.Black, 0), pts)
   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

      </source>

Scale Transform 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 device_rect As New Rectangle(50, 50, 150, 150)
       e.Graphics.DrawRectangle(Pens.Black, device_rect)
       Dim world_rect As New Rectangle(0, 0, 1, 1)
       MapRectangles(e.Graphics, world_rect, device_rect)
       Dim the_pen As New Pen(Color.Black, 0)
       e.Graphics.FillEllipse(Brushes.Yellow, 0, 0, 1, 1)              " Face.
       e.Graphics.DrawEllipse(the_pen, 0, 0, 10, 10)
   End Sub

   " Map a world coordinate rectangle to a device coordinate rectangle.
   Private Sub MapRectangles(ByVal gr As Graphics, ByVal world_rect As Rectangle, ByVal device_rect As Rectangle)
       gr.ResetTransform()
       gr.ScaleTransform( _
           CSng(device_rect.Width / world_rect.Width), _
           CSng(device_rect.Height / world_rect.Height), _
           MatrixOrder.Append)
   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(564, 209)
       Me.Name = "Form1"
       Me.Text = "Title"
       Me.ResumeLayout(False)
   End Sub

End Class

      </source>

Shear: 0,0

<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 ShearingForm()
       Application.Run(myform)
   End Sub

End Class

Public Class ShearingForm

   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 = "ShearingForm"
   End Sub

1. End Region

   Sub ShearingForm_Paint(ByVal sender As Object, ByVal e As PaintEventArgs) Handles MyBase.Paint
       Dim g As Graphics = e.Graphics
       Dim width As Single = 200
       Dim height As Single = 50
       Dim format As StringFormat = New StringFormat()
       format.Alignment = StringAlignment.Center
       format.LineAlignment = StringAlignment.Center
       Dim rect As RectangleF = New RectangleF(0, 0, width, height)
       Dim matrix As Matrix = New Matrix()
       matrix.Translate(0, 0)
       matrix.Shear(0.0F, 0.0F)
       g.Transform = matrix
       g.DrawString("Shear(0,0)", Me.Font, Brushes.Black, rect, format)
       g.DrawRectangle(Pens.Black, rect.X, rect.Y, rect.Width, rect.Height)
   End Sub

End Class

      </source>