VB.Net Tutorial/2D Graphics/Clip
Содержание
Clip by GraphicPath
<source lang="vbnet">Imports System.Drawing Imports System.Drawing.Drawing2D Imports System.Windows.Forms public class GraphicPathClip
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) Dim txt As String = "www.vbex.ru" Dim graphics_path As New GraphicsPath graphics_path.AddString(txt, _ New FontFamily("Times New Roman"), _ FontStyle.Bold, 150, _ New Point(0, 0), _ New StringFormat) e.Graphics.SetClip(graphics_path) e.Graphics.FillRectangle(Brushes.White, Me.ClientRectangle) Dim rnd As New Random Dim x1, y1, x2, y2 As Integer For i As Integer = 1 To 400 x1 = rnd.Next(-20, Me.ClientSize.Width - 1) y1 = rnd.Next(0, Me.ClientSize.Height - 1) x2 = rnd.Next(500, Me.ClientSize.Width - 1) y2 = rnd.Next(0, Me.ClientSize.Height - 1) e.Graphics.DrawLine(Pens.Black, x1, y1, x2, y2) Next i 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>
Clip Region
<source lang="vbnet">Imports System.Drawing Imports System.Drawing.Drawing2D Imports System.Windows.Forms public class RegionClip
public Shared Sub Main Application.Run(New Form1) End Sub
End class Public Class Form1
Private Sub Form11_Paint(ByVal sender As Object, _ ByVal e As System.Windows.Forms.PaintEventArgs) _ Handles Me.Paint Dim canvas As Graphics Dim fencePath As GraphicsPath Dim slottedRegion As Region canvas = e.Graphics canvas.Clear(Color.White) fencePath = New GraphicsPath fencePath.AddRectangle(New Rectangle(2 * 10, 0, 20, 500)) fencePath.AddRectangle(New Rectangle(8 * 10, 0, 20, 500)) fencePath.AddRectangle(New Rectangle(14 * 10, 0, 20, 500)) fencePath.AddRectangle(New Rectangle(20 * 10, 0, 20, 500)) slottedRegion = New Region(fencePath) canvas.Clip = slottedRegion canvas.Clear(Color.Aqua) canvas.DrawString("www.vbex.ru", New Font("Times New Roman", 77),Brushes.Blue, 20, 20) End Sub
End Class
<Global.Microsoft.VisualBasic.rupilerServices.DesignerGenerated()> _ Partial Class Form1
Inherits System.Windows.Forms.Form "Form overrides dispose to clean up the component list. <System.Diagnostics.DebuggerNonUserCode()> _ Protected 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(617, 197) Me.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedSingle Me.MaximizeBox = False Me.Name = "Form1" Me.Text = "Using Regions Effectively" Me.ResumeLayout(False) End Sub
End Class</source>
Clip Region Exclude
<source lang="vbnet">Imports System.Drawing Imports System.Drawing.Drawing2D Imports System.Windows.Forms public class ClipRegionExclude
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) Dim g As Graphics = Me.CreateGraphics() g.Clear(Me.BackColor) Dim pen As New Pen(Color.Red, 5) Dim brush As New SolidBrush(Color.Red) Dim rect1 As New Rectangle(50, 0, 50, 150) Dim rect2 As New Rectangle(0, 50, 150, 50) Dim [region] As New [Region](rect1) [region].Exclude(rect2) g.FillRegion(brush, [region]) g.Dispose() 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>
Clip Region Intersect
<source lang="vbnet">Imports System.Drawing Imports System.Drawing.Drawing2D Imports System.Windows.Forms public class ClipRegionIntersect
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) Dim g As Graphics = Me.CreateGraphics() g.Clear(Me.BackColor) Dim pen As New Pen(Color.Red, 5) Dim brush As New SolidBrush(Color.Red) Dim rect1 As New Rectangle(50, 0, 50, 150) Dim rect2 As New Rectangle(0, 50, 150, 50) Dim [region] As New [Region](rect1) [region].Intersect(rect2) g.FillRegion(brush, [region]) g.Dispose() 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>
Clip Region Union
<source lang="vbnet">Imports System.Drawing Imports System.Drawing.Drawing2D Imports System.Windows.Forms public class ClipRegionUnion
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) Dim g As Graphics = Me.CreateGraphics() g.Clear(Me.BackColor) Dim pen As New Pen(Color.Red, 5) Dim brush As New SolidBrush(Color.Red) Dim rect1 As New Rectangle(50, 0, 50, 150) Dim rect2 As New Rectangle(0, 50, 150, 50) Dim [region] As New [Region](rect1) [region].Union(rect2) g.FillRegion(brush, [region]) g.Dispose() 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>
Clip Region Xor
<source lang="vbnet">Imports System.Drawing Imports System.Drawing.Drawing2D Imports System.Windows.Forms public class ClipRegionXor
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) Dim g As Graphics = Me.CreateGraphics() g.Clear(Me.BackColor) Dim pen As New Pen(Color.Red, 5) Dim brush As New SolidBrush(Color.Red) Dim rect1 As New Rectangle(50, 0, 50, 150) Dim rect2 As New Rectangle(0, 50, 150, 50) Dim [region] As New [Region](rect1) [region].Xor(rect2) g.FillRegion(brush, [region]) g.Dispose() 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>
CombineMode.Exclude
<source lang="vbnet">Imports System.Drawing Imports System.Drawing.Drawing2D Imports System.Windows.Forms public class CombineModeExclude
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) Dim g As Graphics = Me.CreateGraphics() g.Clear(Me.BackColor) Dim rect1 As New RectangleF(20.0F, 20.0F, 200.0F, 200.0F) Dim rgn1 As New [Region](rect1) g.SetClip(rgn1, CombineMode.Exclude) Dim h As Single = 20.0F Dim w As Single = 30.0F g.TranslateClip(h, w) g.FillRectangle(Brushes.Green, 20, 20, 300, 300) 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>
Rectangle clipped to Ellipse
<source lang="vbnet">Imports System.Drawing Imports System.Drawing.Drawing2D Imports System.Windows.Forms public class RectangleClippedEllipse
public Shared Sub Main Application.Run(New ClippingRegionForm) End Sub
End class
Public Class ClippingRegionForm
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() components = New System.ruponentModel.Container() Me.Text = "ClippingRegionForm" End Sub
- End Region
Dim rnd As Random = New Random()
Private Sub ClippingRegionForm_Paint(ByVal sender As Object, ByVal e As System.Windows.Forms.PaintEventArgs) Handles MyBase.Paint Dim g As Graphics = e.Graphics Dim path As GraphicsPath = New GraphicsPath() path.AddEllipse(Me.ClientRectangle) Dim region As Region = New Region(path) g.DrawPath(Pens.Red, path) g.Clip = region Dim rect As Rectangle = Me.ClientRectangle rect.Offset(10, 10) rect.Width = rect.Width - 20 rect.Height = rect.Height - 20 g.FillRectangle(Brushes.Black, rect) End Sub
End Class</source>