VB.Net/2D/Arc

Материал из VB Эксперт
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Arc starts at 0 and sweeps 110 degrees

<source lang="vbnet"> Imports System Imports System.Drawing Imports System.Windows.Forms Imports System.Drawing.Text Public Class MainClass

  Shared Sub Main()
       Dim myform As Form = New FrmDrawing()
       Application.Run(myform)
  End Sub " Main

End Class

Public Class FrmDrawing

  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.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()
     "
     "frmDrawing
     "
     Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
     Me.BackColor = System.Drawing.SystemColors.AppWorkspace
     Me.ClientSize = New System.Drawing.Size(472, 157)
     Me.Name = "frmDrawing"
  End Sub
  1. End Region
  " display ovals lines, and rectangles
  Protected Overrides Sub OnPaint( _
     ByVal paintEvent As PaintEventArgs)
     " get graphics object
     Dim graphicsObject As Graphics = paintEvent.Graphics
     Dim rectangle1 As Rectangle = New Rectangle(15, 35, 80, 80)
     Dim brush1 As SolidBrush = New SolidBrush(Color.Firebrick)
     Dim pen1 As Pen = New Pen(brush1, 1)
     Dim brush2 As SolidBrush = New SolidBrush(Color.DarkBlue)
     Dim pen2 As Pen = New Pen(brush2, 1)
     " start at 0 and sweep 110 degrees
     rectangle1.Location = New Point(100, 35)
     graphicsObject.DrawRectangle(pen1, rectangle1)
     graphicsObject.DrawArc(pen2, rectangle1, 0, 110)
  End Sub " OnPaint

End Class " FrmDrawing

      </source>


Draw Arc

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

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
  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()
   "
   "Form1
   "
   Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
   Me.ClientSize = New System.Drawing.Size(504, 629)
   Me.Name = "Form1"
   Me.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen
   Me.Text = "Form1"
 End Sub
  1. 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 R1 As New Rectangle(10, 10, 40, 40)
   e.Graphics.SmoothingMode = SmoothingMode.HighQuality
   "Use first rect to bound arc 
   e.Graphics.ResetTransform()
   e.Graphics.TranslateTransform(200.0F, 50.0F)
   e.Graphics.DrawArc(Pens.DarkBlue, R1, 40, 160)
 End Sub

End Class

      </source>


Draw a Simple Arc

<source lang="vbnet"> Imports System Imports System.Drawing Imports System.Windows.Forms Imports System.Drawing.Text Public Class MainClass

  Shared Sub Main()
       Dim myform As Form = New FrmDrawing()
       Application.Run(myform)
  End Sub " Main

End Class

Public Class FrmDrawing

  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.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()
     "
     "frmDrawing
     "
     Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
     Me.BackColor = System.Drawing.SystemColors.AppWorkspace
     Me.ClientSize = New System.Drawing.Size(472, 157)
     Me.Name = "frmDrawing"
  End Sub
  1. End Region
  " display ovals lines, and rectangles
  Protected Overrides Sub OnPaint( _
     ByVal paintEvent As PaintEventArgs)
     " get graphics object
     Dim graphicsObject As Graphics = paintEvent.Graphics
     Dim rectangle1 As Rectangle = New Rectangle(15, 35, 80, 80)
     Dim brush1 As SolidBrush = New SolidBrush(Color.Firebrick)
     Dim pen1 As Pen = New Pen(brush1, 1)
     Dim brush2 As SolidBrush = New SolidBrush(Color.DarkBlue)
     Dim pen2 As Pen = New Pen(brush2, 1)
     " start at 0 and sweep 360 degrees
     graphicsObject.DrawRectangle(pen1, rectangle1)
     graphicsObject.DrawArc(pen2, rectangle1, 0, 360)
  End Sub " OnPaint

End Class " FrmDrawing

      </source>