в 16:40, 26 мая 2010

2010-05-26T16:40:30Z

Admin: 1 версия

2010-05-26T12:55:06Z

1 версия

Новая страница

==Global transformation==

<source lang="vbnet">Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Windows.Forms
public class GlobalTransformation
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 bluePen As New Pen(Color.Blue, 2)
Dim pt1 As New Point(10, 10)
Dim pt2 As New Point(20, 20)
Dim lnColors As Color() = {Color.Black, Color.Red}
Dim rect1 As New Rectangle(10, 10, 15, 15)
Dim lgBrush1 As New LinearGradientBrush(rect1, Color.Blue, Color.Green, LinearGradientMode.BackwardDiagonal)
Dim lgBrush As New LinearGradientBrush(pt1, pt2, Color.Red, Color.Green)
lgBrush.LinearColors = lnColors
lgBrush.GammaCorrection = True
g.FillRectangle(lgBrush, 150, 0, 50, 100)
g.DrawEllipse(bluePen, 0, 0, 100, 50)
g.FillEllipse(lgBrush1, 300, 0, 100, 100)
g.ScaleTransform(1, 0.5F)
g.TranslateTransform(50, 0, MatrixOrder.Append)
g.RotateTransform(30.0F, MatrixOrder.Append)
g.FillEllipse(lgBrush1, 300, 0, 100, 100)
g.RotateTransform(15.0F, MatrixOrder.Append)
g.FillRectangle(lgBrush, 150, 0, 50, 100)
g.RotateTransform(15.0F, MatrixOrder.Append)
g.DrawEllipse(bluePen, 0, 0, 100, 50)
lgBrush1.Dispose()
lgBrush.Dispose()
bluePen.Dispose()
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>

==Local transformation==

<source lang="vbnet">Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Windows.Forms
public class LocalTransformation
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 path As New GraphicsPath
path.AddEllipse(50, 50, 100, 150)
path.AddLine(20, 20, 200, 20)
Dim bluePen As New Pen(Color.Blue, 2)
Dim X As New Matrix
X.Rotate(30)
X.Translate(50.0F, 0)
path.Transform(X)
g.DrawRectangle(Pens.Green, 200, 50, 100, 100)
g.DrawLine(Pens.Green, 30, 20, 200, 20)
g.DrawPath(bluePen, path)
bluePen.Dispose()
path.Dispose()
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>

==Restore the saved transformation==

<source lang="vbnet">Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Windows.Forms
public class RestoreSavedTransform
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)
Dim trans As Matrix = e.Graphics.Transform
For i As Integer = 5 To 90 Step 5
e.Graphics.Transform = trans
e.Graphics.RotateTransform(i, 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>

==Transform and restore==

<source lang="vbnet">Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Windows.Forms
public class TransformAndRestore
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(150, 150, MatrixOrder.Append)
For i As Integer = 5 To 30 Step 5
Dim graphics_state As GraphicsState = e.Graphics.Save()
e.Graphics.RotateTransform(i, MatrixOrder.Prepend)
e.Graphics.DrawRectangle(New Pen(Color.Black, 0), -1, -1, 2, 2)
e.Graphics.Restore(graphics_state)
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>

← Предыдущая	Версия 16:40, 26 мая 2010
(нет различий)

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

в 16:40, 26 мая 2010

Admin: 1 версия