Scale first and then Transform : Scale « 2D Graphics « VB.Net Tutorial






Scale first and then Transform
Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Windows.Forms

public class ScaleFirstThenTransform
   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(50, 60, MatrixOrder.Append)
        DrawArrow(e.Graphics, HatchStyle.Vertical)
    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








17.77.Scale
17.77.1.Scale(1,1)Scale(1,1)
17.77.2.Scale(1,3)Scale(1,3)
17.77.3.Scale(3, 1)Scale(3, 1)
17.77.4.Scale(-1, -1) (2)Scale(-1, -1) (2)
17.77.5.Scale DiamondScale Diamond
17.77.6.Scale first and then TransformScale first and then Transform