VB.Net/2D/Rotate

Материал из VB Эксперт
Перейти к: навигация, поиск

Rotate 45 degrees

<source lang="vbnet"> 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 MyBase.Paint
       " Set the font and font antialiasing properties.
       Me.Font = New Font("Times New Roman", 20, FontStyle.Bold, GraphicsUnit.Pixel)
       e.Graphics.TextRenderingHint = TextRenderingHint.AntiAliasGridFit
       " Draw the original arrow.
       DrawArrow(e.Graphics, "Arrow")
       " Rotate 45 degrees.
       e.Graphics.RotateTransform(45, MatrixOrder.Append)
       DrawArrow(e.Graphics, "A2")
   End Sub
   " Draw an arrow outline containing some text.
   Private Sub DrawArrow(ByVal gr As Graphics, ByVal txt As String)
       " Draw the arrow.
       Dim pts() As Point = { _
           New Point(80, 20), _
           New Point(120, 20), _
           New Point(120, 10), _
           New Point(140, 30), _
           New Point(120, 50), _
           New Point(120, 40), _
           New Point(80, 40) _
       }
       gr.FillPolygon(Brushes.White, pts)
       gr.DrawPolygon(Pens.Black, pts)
       " Draw the text.
       Dim layout_rectangle As New RectangleF(80, 20, 50, 20)
       Dim string_format As New StringFormat
       string_format.LineAlignment = StringAlignment.Center
       string_format.Alignment = StringAlignment.Center
       gr.DrawString(txt, Me.Font, Brushes.Black, _
           layout_rectangle, string_format)
   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>


Rotate 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
           " Scale by a factor of 90.
           e.Graphics.ScaleTransform(90, 90, MatrixOrder.Append)
           " Translate to center on the form.
           e.Graphics.TranslateTransform( _
               Me.ClientRectangle.Width \ 2, _
               Me.ClientRectangle.Height \ 2, _
               MatrixOrder.Append)
           For i As Integer = 5 To 360 Step 5
               " Save the state.
               Dim graphics_state As GraphicsState = e.Graphics.Save()
               " Rotate i degrees.
               e.Graphics.RotateTransform(i, MatrixOrder.Prepend)
               " Draw a rectangle.
               e.Graphics.DrawRectangle(New Pen(Color.Black, 0), -1, -1, 1, 1)
               " Restore the saved state.
               e.Graphics.Restore(graphics_state)
           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(500, 500)
       Me.Name = "Form1"
       Me.Text = "Title"
       Me.ResumeLayout(False)
   End Sub

End Class

      </source>


Rotation 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 RotateForm()
       Application.Run(myform)
   End Sub

End Class



Public Class RotateForm

   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()
       "
       "RotateForm
       "
       Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
       Me.ClientSize = New System.Drawing.Size(500, 500)
       Me.Name = "RotateForm"
       Me.Text = "RotateForm"
   End Sub
  1. End Region
   Sub RotateForm_Paint(ByVal sender As Object, ByVal e As PaintEventArgs) Handles MyBase.Paint
       Dim g As Graphics = e.Graphics
       Dim x As Integer = 250
       Dim y As Integer = 250
       Dim width As Integer = 250
       Dim height As Integer = 250
       Dim textWidth As Single = g.MeasureString("00", Me.Font).Width
       Dim length As Single = 230
       Dim textRect As RectangleF = New RectangleF(x + length, y - Me.Font.GetHeight(g) / 2, length, textWidth)
       Dim format As StringFormat = New StringFormat()
       format.Alignment = StringAlignment.Near
       format.LineAlignment = StringAlignment.Center
       Dim i As Integer
       For i = 0 To 360 Step 10
           Dim matrix As Matrix = New Matrix()
           matrix.RotateAt(i, New PointF(x, y))
           g.Transform = matrix
           g.DrawLine(Pens.Black, x, y, x + length, y)
           g.DrawString(i.ToString(), Me.Font, Brushes.Black, textRect, format)
       Next
   End Sub

End Class

      </source>