VB.Net/2D/Graphic Path
Содержание
Create a Graphics Path and Draw Path
<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 " Create a GraphicsPath. Dim graphics_path As New Drawing2D.GraphicsPath " Add some text to the path. graphics_path.AddString("www.vbex.ru", _ New FontFamily("Times New Roman"), _ CInt(FontStyle.Bold), _ 80, New Point(10, 10), _ StringFormat.GenericTypographic) " Draw the path. e.Graphics.SmoothingMode = Drawing2D.SmoothingMode.AntiAlias e.Graphics.DrawPath(New Pen(Color.Black, 3), graphics_path) 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, 509) Me.Name = "Form1" Me.Text = "Title" Me.ResumeLayout(False) End Sub
End Class
</source>
Create a Graphics Path and Fill Path
<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 " Create a GraphicsPath. Dim graphics_path As New Drawing2D.GraphicsPath " Add some text to the path. graphics_path.AddString("www.vbex.ru", _ New FontFamily("Times New Roman"), _ CInt(FontStyle.Bold), _ 80, New Point(10, 10), _ StringFormat.GenericTypographic) " Draw the path. e.Graphics.SmoothingMode = Drawing2D.SmoothingMode.AntiAlias e.Graphics.FillPath(Brushes.Red, graphics_path) 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>
Create a Graphics Path, Draw and Fill the Path
<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 " Create a GraphicsPath. Dim graphics_path As New Drawing2D.GraphicsPath " Add some text to the path. graphics_path.AddString("www.vbex.ru", _ New FontFamily("Times New Roman"), _ CInt(FontStyle.Bold), _ 80, New Point(10, 10), _ StringFormat.GenericTypographic) " Draw the path. e.Graphics.SmoothingMode = Drawing2D.SmoothingMode.AntiAlias e.Graphics.FillPath(Brushes.Red, graphics_path) e.Graphics.DrawPath(New Pen(Color.Black, 3), graphics_path) 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(564, 209) Me.Name = "Form1" Me.Text = "Title" Me.ResumeLayout(False) End Sub
End Class
</source>
Donut Path Demo
<source lang="vbnet"> Imports System Imports System.Collections Imports System.ruponentModel Imports System.Windows.Forms Imports System.Data Imports System.Configuration Imports System.Resources Imports System.Drawing Imports System.Drawing.Drawing2D Imports System.Drawing.Imaging Public Class MainClass
Shared Sub Main() Dim myform As Form = New Form1() Application.Run(myform) 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 Me.SetStyle(ControlStyles.ResizeRedraw, True) Me.SetStyle(ControlStyles.DoubleBuffer, True) Me.SetStyle(ControlStyles.AllPaintingInWmPaint, True) 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 = "Form1" End Sub
- End Region
Private Function GetDonutPath(ByVal rect As Rectangle, ByVal holeRadius As Integer) As GraphicsPath Dim path As GraphicsPath = New GraphicsPath() path.AddEllipse(rect) Dim centerPoint As Point = New Point(rect.Left + rect.Width / 2, rect.Top + rect.Height / 2) Dim holeRect As Rectangle = New Rectangle(centerPoint.X - holeRadius, centerPoint.Y - holeRadius, holeRadius * 2, holeRadius * 2) path.AddEllipse(holeRect) Dim format As StringFormat = New StringFormat() format.Alignment = StringAlignment.Center format.LineAlignment = StringAlignment.Center path.AddString("Hi", Me.Font.FontFamily, CInt(Me.Font.Style), Me.Font.Height, RectangleF.op_Implicit(rect), format) Return path End Function Private Sub Form1_Paint(ByVal sender As Object, ByVal e As PaintEventArgs) Handles MyBase.Paint Dim g As Graphics = e.Graphics Dim width As Integer = Me.ClientRectangle.Width Dim height As Integer = Me.ClientRectangle.Height Dim rect As Rectangle = New Rectangle(10, 10, width - 20, height - 20) Dim format As StringFormat = New StringFormat() format.Alignment = StringAlignment.Center format.LineAlignment = StringAlignment.Center Dim path As GraphicsPath = GetDonutPath(rect, width / 5) g.FillPath(Brushes.Yellow, path) g.DrawPath(Pens.Black, path) End Sub
End Class
</source>
GraphicsPath: Draw with FillMode = Alternate
<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 " ValidationError
End Class
Public Class Form1
Private Sub Form1_Paint(ByVal sender As Object, _ ByVal e As System.Windows.Forms.PaintEventArgs) Handles Me.Paint " Generate star points. Dim cx As Integer = Me.ClientSize.Width \ 4 Dim cy As Integer = Me.ClientSize.Height \ 2 Dim radius As Integer = CInt(cy * 0.9) Dim star_pts(4) As Point Dim angle As Double = -PI / 2 For i As Integer = 0 To 4 star_pts(i).X = cx + CInt(radius * Cos(angle)) star_pts(i).Y = cy + CInt(radius * Sin(angle)) angle += 4 * PI / 5 Next i " Move to the right. e.Graphics.TranslateTransform(Me.ClientSize.Width \ 2, 0)
" Add the star to the path. Dim star_path As New GraphicsPath star_path.AddPolygon(star_pts) " Make a StringFormat and LayoutRectangle. Dim string_format As New StringFormat string_format.LineAlignment = StringAlignment.Far string_format.Alignment = StringAlignment.Center Dim layout_rectangle As New RectangleF( _ 0, 0, Me.ClientSize.Width \ 2, Me.ClientSize.Height) e.Graphics.SmoothingMode = SmoothingMode.AntiAlias e.Graphics.TextRenderingHint = System.Drawing.Text.TextRenderingHint.AntiAliasGridFit " Draw with FillMode = Alternate. star_path.FillMode = FillMode.Alternate e.Graphics.DrawString(star_path.FillMode.ToString, _ Me.Font, Brushes.Black, _ layout_rectangle, string_format) e.Graphics.FillPath(Brushes.White, star_path) e.Graphics.DrawPath(Pens.Black, star_path) 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(350, 350) Me.Name = "Form1" Me.Text = "TransformArrow" Me.ResumeLayout(False) End Sub
End Class
</source>
GraphicsPath: Draw with FillMode = Winding
<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 " ValidationError
End Class
Public Class Form1
Private Sub Form1_Paint(ByVal sender As Object, _ ByVal e As System.Windows.Forms.PaintEventArgs) Handles Me.Paint " Generate star points. Dim cx As Integer = Me.ClientSize.Width \ 4 Dim cy As Integer = Me.ClientSize.Height \ 2 Dim radius As Integer = CInt(cy * 0.9) Dim star_pts(4) As Point Dim angle As Double = -PI / 2 For i As Integer = 0 To 4 star_pts(i).X = cx + CInt(radius * Cos(angle)) star_pts(i).Y = cy + CInt(radius * Sin(angle)) angle += 4 * PI / 5 Next i " Move to the right. e.Graphics.TranslateTransform(Me.ClientSize.Width \ 2, 0)
" Add the star to the path. Dim star_path As New GraphicsPath star_path.AddPolygon(star_pts) " Make a StringFormat and LayoutRectangle. Dim string_format As New StringFormat string_format.LineAlignment = StringAlignment.Far string_format.Alignment = StringAlignment.Center Dim layout_rectangle As New RectangleF( _ 0, 0, Me.ClientSize.Width \ 2, Me.ClientSize.Height) e.Graphics.SmoothingMode = SmoothingMode.AntiAlias e.Graphics.TextRenderingHint = System.Drawing.Text.TextRenderingHint.AntiAliasGridFit " Draw with FillMode = Winding. star_path.FillMode = FillMode.Winding e.Graphics.DrawString(star_path.FillMode.ToString, _ Me.Font, Brushes.Black, _ layout_rectangle, string_format) e.Graphics.FillPath(Brushes.White, star_path) e.Graphics.DrawPath(Pens.Black, star_path) 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(400, 400) Me.Name = "Form1" Me.Text = "TransformArrow" Me.ResumeLayout(False) End Sub
End Class
</source>
Path Flatten Demo
<source lang="vbnet"> 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 PathFlattenForm() Application.Run(myform) End Sub
End Class
Public Class PathFlattenForm
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() " "PathFlattenForm " Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13) Me.ClientSize = New System.Drawing.Size(416, 126) Me.Name = "PathFlattenForm" Me.Text = "PathFlattenForm" End Sub
- End Region
Sub PathFlattenForm_Paint(ByVal sender As Object, ByVal e As 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 format As StringFormat = New StringFormat() format.Alignment = StringAlignment.Center format.LineAlignment = StringAlignment.Center Dim path As GraphicsPath = New GraphicsPath() path.Reset() path.AddEllipse(rect) path.Flatten(New Matrix(), 10) g.DrawPath(Pens.Black, path) g.DrawString("Flattened", Me.Font, Brushes.Black, rect, format) g.TranslateTransform(width, 0) End Sub
End Class
</source>
Path Warp Demo
<source lang="vbnet"> 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 PathFlattenForm() Application.Run(myform) End Sub
End Class
Public Class PathFlattenForm
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() " "PathFlattenForm " Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13) Me.ClientSize = New System.Drawing.Size(416, 126) Me.Name = "PathFlattenForm" Me.Text = "PathFlattenForm" End Sub
- End Region
Sub PathFlattenForm_Paint(ByVal sender As Object, ByVal e As 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 format As StringFormat = New StringFormat() format.Alignment = StringAlignment.Center format.LineAlignment = StringAlignment.Center Dim path As GraphicsPath = New GraphicsPath() path.Reset() path.AddEllipse(rect) Dim destPoints As PointF() = New PointF() {New PointF(width / 2, 0), New PointF(width, height), New PointF(0, height / 2)} Dim srcRect As RectangleF = New RectangleF(0, 0, width, height / 2) path.Warp(destPoints, srcRect) g.DrawPath(Pens.Black, path) g.DrawString("Warped", Me.Font, Brushes.Black, rect, format) g.TranslateTransform(width, 0) End Sub
End Class
</source>
Path Widen Demo
<source lang="vbnet"> 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 PathFlattenForm() Application.Run(myform) End Sub
End Class
Public Class PathFlattenForm
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() " "PathFlattenForm " Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13) Me.ClientSize = New System.Drawing.Size(416, 126) Me.Name = "PathFlattenForm" Me.Text = "PathFlattenForm" End Sub
- End Region
Sub PathFlattenForm_Paint(ByVal sender As Object, ByVal e As 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 format As StringFormat = New StringFormat() format.Alignment = StringAlignment.Center format.LineAlignment = StringAlignment.Center Dim path As GraphicsPath = New GraphicsPath() path.Reset() path.AddEllipse(rect) Dim widenPen As Pen = New Pen(Color.Empty, 10) path.Widen(widenPen) g.DrawPath(Pens.Black, path) g.DrawString("Widened", Me.Font, Brushes.Black, rect, format) g.TranslateTransform(width, 0) End Sub
End Class
</source>