VB.Net Tutorial/2D Graphics/Tension — различия между версиями
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Текущая версия на 15:54, 26 мая 2010
Draw curve with tension=0
<source lang="vbnet">Imports System.Drawing Imports System.Drawing.Drawing2D Imports System.Windows.Forms public class DrawCurveTension0
public Shared Sub Main Application.Run(New CurvesForm) End Sub
End class Public Class CurvesForm
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 = "CurvesForm" End Sub
- End Region
Private Sub CurvesForm_Paint(ByVal sender As Object, ByVal e As PaintEventArgs) Handles MyBase.Paint Dim g As Graphics = e.Graphics Dim x As Integer = 0 Dim y As Integer = 0 Dim width As Integer = Me.ClientRectangle.Width / 3 Dim height As Integer = Me.ClientRectangle.Height Dim pen As Pen = New Pen(Color.Red, 4) Dim pointPen As Pen = New Pen(Color.Black, 3) pointPen.StartCap = pointPen.EndCap = LineCap.SquareAnchor Dim tension As Single = 0 Dim points As PointF() = New PointF() {New PointF(x + 25, y + height - 25), New PointF(x + width - 25, y + height - 25), New PointF(x + 25, y + 25), New PointF(x + width - 25, y + 25)} g.DrawCurve(pen, points, tension) End Sub
End Class</source>
Draw curve with tension = 0.5
<source lang="vbnet">Imports System.Drawing Imports System.Drawing.Drawing2D Imports System.Windows.Forms public class DrawCurveTension05
public Shared Sub Main Application.Run(New CurvesForm) End Sub
End class Public Class CurvesForm
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 = "CurvesForm" End Sub
- End Region
Private Sub CurvesForm_Paint(ByVal sender As Object, ByVal e As PaintEventArgs) Handles MyBase.Paint Dim g As Graphics = e.Graphics Dim x As Integer = 0 Dim y As Integer = 0 Dim width As Integer = Me.ClientRectangle.Width / 3 Dim height As Integer = Me.ClientRectangle.Height Dim pen As Pen = New Pen(Color.Red, 4) Dim pointPen As Pen = New Pen(Color.Black, 3) pointPen.StartCap = pointPen.EndCap = LineCap.SquareAnchor Dim tension As Single = 0 tension = 0.5 Dim points As PointF() = New PointF() {New PointF(x + 25, y + height - 25), New PointF(x + width - 25, y + height - 25), New PointF(x + 25, y + 25), New PointF(x + width - 25, y + 25)} g.DrawCurve(pen, points, tension) End Sub
End Class</source>
Draw curve with tension = 1.0
<source lang="vbnet">Imports System.Drawing Imports System.Drawing.Drawing2D Imports System.Windows.Forms public class DrawCurveTension10
public Shared Sub Main Application.Run(New CurvesForm) End Sub
End class Public Class CurvesForm
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 = "CurvesForm" End Sub
- End Region
Private Sub CurvesForm_Paint(ByVal sender As Object, ByVal e As PaintEventArgs) Handles MyBase.Paint Dim g As Graphics = e.Graphics Dim x As Integer = 0 Dim y As Integer = 0 Dim width As Integer = Me.ClientRectangle.Width / 3 Dim height As Integer = Me.ClientRectangle.Height Dim pen As Pen = New Pen(Color.Red, 4) Dim pointPen As Pen = New Pen(Color.Black, 3) pointPen.StartCap = pointPen.EndCap = LineCap.SquareAnchor Dim tension As Single = 0 tension = 1.0 Dim points As PointF() = New PointF() {New PointF(x + 25, y + height - 25), New PointF(x + width - 25, y + height - 25), New PointF(x + 25, y + 25), New PointF(x + width - 25, y + 25)} g.DrawCurve(pen, points, tension) End Sub
End Class</source>