Graphics.ScaleTransform : Graphics « System.Drawing « VB.Net by API

1. VB.Net by API
2. System.Drawing
3. Graphics

Graphics.ScaleTransform

  
Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Windows.Forms
Imports System.Math
public class DrawCurveSin
   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 a As Graphics =  e.Graphics
        Dim mypen As Pen
        Dim mypoints() As PointF
        Dim i As Integer
        Dim mycount As Integer

        mypen = New Pen(System.Drawing.Color.Red, 3)

        mycount = Me.Width / 10
        ReDim mypoints(mycount)

        For i = 1 To mycount
            mypoints(i).X = i * 10
            mypoints(i).Y = -1 * (Sin(i)) ^ 2 * Me.Height
        Next

        a = Me.CreateGraphics
        a.Clear(Me.BackColor)
        a.ScaleTransform(1, -1)
        a.DrawCurve(mypen, mypoints)

        a.Dispose()
        mypen.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

   
    
  

Related examples in the same category