VB.Net Tutorial/2D Graphics/Scale

Материал из VB Эксперт
Версия от 15:55, 26 мая 2010; Admin (обсуждение | вклад) (1 версия)
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Scale(1,1)

<source lang="vbnet">Imports System.Drawing Imports System.Drawing.Drawing2D Imports System.Windows.Forms public class Scaling11

  public Shared Sub Main
       Application.Run(New ScalingFontsForm)
  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)
   End Sub

End Class</source>

Scale(-1, -1) (2)

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

  public Shared Sub Main
       Application.Run(New ScalingFontsForm)
  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 - width, -y - height, width, height), format)
   End Sub

End Class</source>

Scale(1,3)

<source lang="vbnet">Imports System.Drawing Imports System.Drawing.Drawing2D Imports System.Windows.Forms public class Scaling13

  public Shared Sub Main
       Application.Run(New ScalingFontsForm)
  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)
   End Sub

End Class</source>

Scale(3, 1)

<source lang="vbnet">Imports System.Drawing Imports System.Drawing.Drawing2D Imports System.Windows.Forms public class Scaling31

  public Shared Sub Main
       Application.Run(New ScalingFontsForm)
  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)
   End Sub

End Class</source>

Scale Diamond

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

  public Shared Sub Main
       Application.Run(New Form1)
  End Sub

End class public class Form1

 Inherits System.Windows.Forms.Form
 Protected Overrides Sub OnPaint(ByVal e As PaintEventArgs)
       DrawDiamond(e.Graphics)
       e.Graphics.TranslateTransform(-125, -125, MatrixOrder.Append)
       e.Graphics.ScaleTransform(2, 2, MatrixOrder.Append)
       e.Graphics.TranslateTransform(125, 125, MatrixOrder.Append)
       DrawDiamond(e.Graphics)
   End Sub
   Private Sub DrawDiamond(ByVal gr As Graphics)
       Dim pts() As Point = { _
           New Point(75, 125), _
           New Point(125, 75), _
           New Point(175, 125), _
           New Point(125, 175) _
       }
       gr.DrawPolygon(Pens.Black, pts)
   End Sub
 Public Sub New()
   MyBase.New()
   Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
   Me.ClientSize = New System.Drawing.Size(292, 273)
   Me.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen
 End Sub

End Class</source>

Scale first and then Transform

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

  public Shared Sub Main
       Application.Run(New Form1)
  End Sub

End class public class Form1

 Inherits System.Windows.Forms.Form
 Protected Overrides Sub OnPaint(ByVal e As PaintEventArgs)
       e.Graphics.ScaleTransform(30, 30, MatrixOrder.Append)
       e.Graphics.TranslateTransform(50, 60, MatrixOrder.Append)
       DrawArrow(e.Graphics, HatchStyle.Vertical)
   End Sub
   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
 Public Sub New()
   MyBase.New()
   Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
   Me.ClientSize = New System.Drawing.Size(292, 273)
   Me.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen
 End Sub

End Class</source>