VB.Net Tutorial/2D Graphics/RotateTransform — различия между версиями
Admin (обсуждение | вклад) м (1 версия) |
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(нет различий)
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Текущая версия на 15:55, 26 мая 2010
RotateTransform and draw Ellipse
<source lang="vbnet">Imports System.Drawing Imports System.Drawing.Drawing2D Imports System.Windows.Forms public class RotateTransformEllipse
public Shared Sub Main Application.Run(New Form1) End Sub
End class Public Class Form1
Private Sub Panel1_Paint(ByVal sender As Object, ByVal e As System.Windows.Forms.PaintEventArgs) Handles Panel1.Paint Dim canvas As Graphics = e.Graphics Dim counter As Integer Const numberOfLobes As Integer = 20 Dim atomPen As Pen = New Pen(Color.Blue, 2) Dim sizeFactor As Integer = Button2.ClientSize.Width \ 2 Dim lobeLength As Integer = sizeFactor * 8 \ 10 Dim lobeWidth As Integer = lobeLength \ 4 canvas.TranslateTransform(sizeFactor, sizeFactor) For counter = 1 To numberOfLobes canvas.RotateTransform(360 / numberOfLobes) canvas.DrawEllipse(atomPen, -lobeLength, -lobeWidth, lobeLength * 2, lobeWidth * 2) Next counter 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.Panel1 = New System.Windows.Forms.Panel Me.Button2 = New System.Windows.Forms.Button Me.SuspendLayout() " "Panel1 " Me.Panel1.Location = New System.Drawing.Point(56, 32) Me.Panel1.Name = "Panel1" Me.Panel1.Size = New System.Drawing.Size(368, 400) Me.Panel1.TabIndex = 0 " "Form1 " Me.AutoScaleDimensions = New System.Drawing.SizeF(6.0!, 13.0!) Me.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font Me.ClientSize = New System.Drawing.Size(479, 284) Me.Controls.Add(Me.Panel1) Me.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedSingle Me.MaximizeBox = False Me.Text = "Special Effects" Me.ResumeLayout(False) End Sub Friend WithEvents Panel1 As System.Windows.Forms.Panel Friend WithEvents Button2 As System.Windows.Forms.Button
End Class</source>
RotateTransform With MatrixOrder.Prepend
<source lang="vbnet">Imports System.Drawing Imports System.Drawing.Drawing2D Imports System.Windows.Forms public class RotateTransformWithMatrixOrderPrepend
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) e.Graphics.ScaleTransform(90, 90, MatrixOrder.Append) e.Graphics.TranslateTransform( _ Me.ClientRectangle.Width \ 2, _ Me.ClientRectangle.Height \ 2, _ MatrixOrder.Append) For i As Integer = 5 To 90 Step 5 e.Graphics.RotateTransform(5, MatrixOrder.Prepend) e.Graphics.DrawRectangle(New Pen(Color.Black, 0), -1, -1, 2, 2) 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>
Scale first, then Transform, then Rotate
<source lang="vbnet">Imports System.Drawing Imports System.Drawing.Drawing2D Imports System.Windows.Forms public class ScaleFirstThenTransformThenRotate
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) e.Graphics.ScaleTransform(30, 30, MatrixOrder.Append) e.Graphics.TranslateTransform(150, 60, MatrixOrder.Append) e.Graphics.RotateTransform(30, MatrixOrder.Append) DrawArrow(e.Graphics, HatchStyle.Cross) End Sub Private Sub DrawArrow(ByVal gr As Graphics, ByVal hatch_style As HatchStyle) Dim pts() As Point = { _ New Point(0, 1), _ New Point(2, 1), _ New Point(2, 0), _ New Point(4, 2), _ New Point(2, 4), _ New Point(2, 3), _ New Point(0, 3) _ } gr.FillPolygon(New HatchBrush(hatch_style, Color.Black, Color.White), pts) gr.DrawPolygon(New Pen(Color.Black, 0), pts) 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>