VB.Net/2D/Pen
Содержание
Draw Curve with Different pens
<source lang="vbnet"> Imports System Imports System.Windows.Forms Imports System.Drawing.Text Imports System.Drawing 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 " Define the curve"s control points. Dim pts() As Point = { _ New Point(200, 30), _ New Point(200, 150), _ New Point(10, 50), _ New Point(250, 200), _ New Point(20, 200), _ New Point(250, 50), _ New Point(100, 250) _ } " Draw the closed curve. e.Graphics.SmoothingMode = Drawing2D.SmoothingMode.HighQuality For tension As Single = 0 To 2 Step 0.25 Dim curve_pen As New Pen(Color.Black, tension * 4 + 1) e.Graphics.DrawClosedCurve(curve_pen, pts, tension, _ Drawing2D.FillMode.Alternate) Next tension " Draw rectangles on the control points. For i As Integer = 0 To pts.Length - 1 e.Graphics.FillRectangle(Brushes.White, pts(i).X - 2, pts(i).Y - 2, 5, 5) e.Graphics.DrawRectangle(Pens.Black, pts(i).X - 2, pts(i).Y - 2, 5, 5) 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(364, 309) Me.Name = "Form1" Me.Text = "Title" Me.ResumeLayout(False) End Sub
End Class
</source>
Draw thick rectangle outline in red
<source lang="vbnet"> Imports System Imports System.Drawing Imports System.Drawing.Drawing2D Imports System.Windows.Forms Imports System.Drawing.Text Public Class MainClass
Shared Sub Main() Dim myform As Form = New FrmDrawShapes() Application.Run(myform) End Sub " Main
End Class
Public Class FrmDrawShapes
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.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() " "frmDrawShapes " Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13) Me.ClientSize = New System.Drawing.Size(520, 197) Me.Name = "frmDrawShapes" Me.Text = "Drawing Shapes" End Sub
- End Region
" draw various shapes on form Protected Overrides Sub OnPaint(ByVal e As PaintEventArgs) " references to object we will use Dim graphicsObject As Graphics = e.Graphics " pen and location for red outline rectangle Dim thickRedPen As Pen = New Pen(Color.Red, 10) Dim drawArea2 As Rectangle = New Rectangle(80, 30, 65, 100) " draw thick rectangle outline in red graphicsObject.DrawRectangle(thickRedPen, drawArea2) End Sub " OnPaint
End Class
</source>
Draw with Pen Compound Array
<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 Me.Paint Dim the_pen As New Pen(Color.Black, 10) the_pen.rupoundArray = New Single() {0.0, 0.2, 0.4, 0.6, 0.8, 1.0} e.Graphics.DrawRectangle(the_pen, 20, 50, 100, 100) e.Graphics.DrawEllipse(the_pen, 150, 50, 100, 100) 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>
Pen Compound Array Demo 1
<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 Me.Paint Dim the_pen As New Pen(Color.Black, 10) the_pen.rupoundArray = New Single() {0.0, 0.45, 0.55, 1.0} e.Graphics.DrawLine(the_pen, 10, 20, 400, 20) 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>
Pen"s Compound Array
<source lang="vbnet"> Imports System Imports System.Windows.Forms Imports System.Drawing Imports System.Drawing.Drawing2D Imports System.Drawing.Text
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
- 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() Me.SuspendLayout() " "Form1 " Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13) Me.ClientSize = New System.Drawing.Size(392, 213) Me.Controls.AddRange(New System.Windows.Forms.Control() {}) Me.Name = "Form1" Me.Text = "Form1" Me.ResumeLayout(False) End Sub
- 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 G As Graphics = e.Graphics Dim P1 As Pen = New Pen(Color.Blue, 10) "compoundarray Dim P3 As Pen = New Pen(Color.Blue, 20) Dim lines() As Single = {0.0, 0.1, 0.9, 1.0} P3.rupoundArray = lines G.DrawLine(P3, 20, CInt(Me.Height / 2), Me.Width - 20, CInt(Me.Height / 2)) End Sub
End Class
</source>
Pen width Demo
<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 Me.Paint Dim the_pen As New Pen(Color.Black, 1) e.Graphics.DrawLine(the_pen, 50, 10, 200, 10) the_pen.Width = 5 e.Graphics.DrawLine(the_pen, 50, 40, 200, 40) the_pen.Width = 10 e.Graphics.DrawLine(the_pen, 50, 100, 200, 100) the_pen.Width = 20 e.Graphics.DrawLine(the_pen, 50, 200, 200, 200) 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>
Transformed Pen
<source lang="vbnet"> Imports System.Drawing.Drawing2D Imports System Imports System.Drawing.Text Imports System.Drawing Imports System.Windows.Forms Imports System.Math Public Class MainClass
Shared Sub Main() Dim form1 As Form = New Form1() Application.Run(form1) 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 Const Cx As Integer = 120 Const Cy As Integer = 120 Const R As Integer = 100 Const PEN_WID As Integer = 10 Dim the_pen As New Pen(Color.Black, PEN_WID) the_pen.ScaleTransform(1, 4, MatrixOrder.Append) the_pen.RotateTransform(45, MatrixOrder.Append) e.Graphics.SmoothingMode = SmoothingMode.AntiAlias e.Graphics.ScaleTransform(1, 4, MatrixOrder.Append) e.Graphics.RotateTransform(45, MatrixOrder.Append) For angle As Single = 0 To 2 * PI Step PI / 8 Dim graphics_state As GraphicsState = e.Graphics.Save e.Graphics.TranslateTransform( _ CSng(Cx + R * Cos(angle)), _ CSng(Cy + R * Sin(angle)), _ MatrixOrder.Append) e.Graphics.DrawEllipse(Pens.White, -PEN_WID , -PEN_WID , PEN_WID, PEN_WID) e.Graphics.Restore(graphics_state) Next angle 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(200, 200) Me.Name = "Form1" Me.Text = "" Me.ResumeLayout(False) End Sub
End Class
</source>