в 16:40, 26 мая 2010

2010-05-26T16:40:30Z

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2010-05-26T12:55:12Z

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==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>

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VB.Net Tutorial/2D Graphics/RotateTransform - История изменений

в 16:40, 26 мая 2010

Admin: 1 версия