VB.Net/2D/Rotate

Rotate 45 degrees

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

Rotate Transform Demo

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

Rotation Demo

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
#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
#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