VB.Net Tutorial/2D Graphics/Region
Содержание
Create Region from Rectangle
<source lang="vbnet">Imports System.Drawing Imports System.Drawing.Drawing2D Imports System.Windows.Forms public class CreateRegionFromRectangle
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 Rectangle(20, 20, 60, 80) Dim rect2 As New Rectangle(100, 100, 30, 40) Dim rgn1 As New [Region](rect2) g.ExcludeClip(rect1) g.ExcludeClip(rgn1) g.FillRectangle(Brushes.Red, 0, 0, 200, 200) 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>
Region: Complement
<source lang="vbnet">Imports System.Drawing Imports System.Drawing.Drawing2D Imports System.Windows.Forms public class RegionComplement
public Shared Sub Main Application.Run(New CombinationsForm) End Sub
End class
Public Class CombinationsForm
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() " "CombinationsForm " Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13) Me.ClientSize = New System.Drawing.Size(200, 118) Me.Name = "CombinationsForm" Me.Text = "CombinationsForm" End Sub
- End Region
Private Sub CombinationsForm_Paint(ByVal sender As Object, ByVal e As System.Windows.Forms.PaintEventArgs) Handles MyBase.Paint Dim g As Graphics = e.Graphics Dim width As Single = Me.ClientSize.Width Dim height As Single = Me.ClientSize.Height Dim rect As RectangleF = New RectangleF(0, 0, width, height) Dim path1 As GraphicsPath = New GraphicsPath() Dim path2 As GraphicsPath = New GraphicsPath() Dim path1Rect As RectangleF = New RectangleF(0, 0, width * 2.0F / 3.0F, height) Dim path2rect As RectangleF = path1Rect path2rect.Offset(width * 1.0F / 3.0F, 0) path1.AddEllipse(path1Rect) path2.AddEllipse(path2rect) Dim region As Region = New Region(path1) region.ruplement(path2) g.FillRegion(Brushes.Red, region) g.TranslateTransform(width, 0) End Sub
End Class</source>
Region: Exclude
<source lang="vbnet">Imports System.Drawing Imports System.Drawing.Drawing2D Imports System.Windows.Forms public class RegionExclude
public Shared Sub Main Application.Run(New CombinationsForm) End Sub
End class
Public Class CombinationsForm
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() " "CombinationsForm " Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13) Me.ClientSize = New System.Drawing.Size(200, 118) Me.Name = "CombinationsForm" Me.Text = "CombinationsForm" End Sub
- End Region
Private Sub CombinationsForm_Paint(ByVal sender As Object, ByVal e As System.Windows.Forms.PaintEventArgs) Handles MyBase.Paint Dim g As Graphics = e.Graphics Dim width As Single = Me.ClientSize.Width Dim height As Single = Me.ClientSize.Height Dim rect As RectangleF = New RectangleF(0, 0, width, height) Dim path1 As GraphicsPath = New GraphicsPath() Dim path2 As GraphicsPath = New GraphicsPath() Dim path1Rect As RectangleF = New RectangleF(0, 0, width * 2.0F / 3.0F, height) Dim path2rect As RectangleF = path1Rect path2rect.Offset(width * 1.0F / 3.0F, 0) path1.AddEllipse(path1Rect) path2.AddEllipse(path2rect) Dim region As Region = New Region(path1) region.Exclude(path2) g.FillRegion(Brushes.Red, region) g.TranslateTransform(width, 0) End Sub
End Class</source>
Region: Intersect
<source lang="vbnet">Imports System.Drawing Imports System.Drawing.Drawing2D Imports System.Windows.Forms public class RegionIntersect
public Shared Sub Main Application.Run(New CombinationsForm) End Sub
End class
Public Class CombinationsForm
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() " "CombinationsForm " Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13) Me.ClientSize = New System.Drawing.Size(200, 118) Me.Name = "CombinationsForm" Me.Text = "CombinationsForm" End Sub
- End Region
Private Sub CombinationsForm_Paint(ByVal sender As Object, ByVal e As System.Windows.Forms.PaintEventArgs) Handles MyBase.Paint Dim g As Graphics = e.Graphics Dim width As Single = Me.ClientSize.Width Dim height As Single = Me.ClientSize.Height Dim rect As RectangleF = New RectangleF(0, 0, width, height) Dim path1 As GraphicsPath = New GraphicsPath() Dim path2 As GraphicsPath = New GraphicsPath() Dim path1Rect As RectangleF = New RectangleF(0, 0, width * 2.0F / 3.0F, height) Dim path2rect As RectangleF = path1Rect path2rect.Offset(width * 1.0F / 3.0F, 0) path1.AddEllipse(path1Rect) path2.AddEllipse(path2rect) Dim region As Region = New Region(path1) region.Intersect(path2) g.FillRegion(Brushes.Red, region) g.TranslateTransform(width, 0) End Sub
End Class</source>
Region.MakeEmpty, Region.MakeInfinite, Region.GetBounds
<source lang="vbnet">Imports System.Drawing Imports System.Drawing.Drawing2D Imports System.Windows.Forms public class RegionMakeEmptyMakeInfinite
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 Rectangle(20, 20, 60, 80) Dim rect2 As New Rectangle(50, 30, 60, 80) Dim rgn1 As New [Region](rect1) Dim rgn2 As New [Region](rect2) If Not rgn1.IsEmpty(g) Then rgn1.MakeEmpty() End If If Not rgn2.IsInfinite(g) Then rgn2.MakeInfinite() End If " Get bounds of the infinite region Dim rect As RectangleF = rgn2.GetBounds(g) Console.WriteLine(rect.ToString()) g.FillRegion(Brushes.Red, rgn2) 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>
Region: Union
<source lang="vbnet">Imports System.Drawing Imports System.Drawing.Drawing2D Imports System.Windows.Forms public class RegionUnion
public Shared Sub Main Application.Run(New CombinationsForm) End Sub
End class
Public Class CombinationsForm
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() " "CombinationsForm " Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13) Me.ClientSize = New System.Drawing.Size(200, 118) Me.Name = "CombinationsForm" Me.Text = "CombinationsForm" End Sub
- End Region
Private Sub CombinationsForm_Paint(ByVal sender As Object, ByVal e As System.Windows.Forms.PaintEventArgs) Handles MyBase.Paint Dim g As Graphics = e.Graphics Dim width As Single = Me.ClientSize.Width Dim height As Single = Me.ClientSize.Height Dim rect As RectangleF = New RectangleF(0, 0, width, height) Dim path1 As GraphicsPath = New GraphicsPath() Dim path2 As GraphicsPath = New GraphicsPath() Dim path1Rect As RectangleF = New RectangleF(0, 0, width * 2.0F / 3.0F, height) Dim path2rect As RectangleF = path1Rect path2rect.Offset(width * 1.0F / 3.0F, 0) path1.AddEllipse(path1Rect) path2.AddEllipse(path2rect) Dim region As Region = New Region(path1) region.Union(path2) g.FillRegion(Brushes.Red, region) g.TranslateTransform(width, 0) End Sub
End Class</source>
Region: Xor
<source lang="vbnet">Imports System.Drawing Imports System.Drawing.Drawing2D Imports System.Windows.Forms public class RegionXor
public Shared Sub Main Application.Run(New CombinationsForm) End Sub
End class
Public Class CombinationsForm
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() " "CombinationsForm " Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13) Me.ClientSize = New System.Drawing.Size(200, 118) Me.Name = "CombinationsForm" Me.Text = "CombinationsForm" End Sub
- End Region
Private Sub CombinationsForm_Paint(ByVal sender As Object, ByVal e As System.Windows.Forms.PaintEventArgs) Handles MyBase.Paint Dim g As Graphics = e.Graphics Dim width As Single = Me.ClientSize.Width Dim height As Single = Me.ClientSize.Height Dim rect As RectangleF = New RectangleF(0, 0, width, height) Dim path1 As GraphicsPath = New GraphicsPath() Dim path2 As GraphicsPath = New GraphicsPath() Dim path1Rect As RectangleF = New RectangleF(0, 0, width * 2.0F / 3.0F, height) Dim path2rect As RectangleF = path1Rect path2rect.Offset(width * 1.0F / 3.0F, 0) path1.AddEllipse(path1Rect) path2.AddEllipse(path2rect) Dim region As Region = New Region(path1) region.Xor(path2) g.FillRegion(Brushes.Red, region) g.TranslateTransform(width, 0) End Sub
End Class</source>