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