轻松做PowerPoint教案演示正弦波

轻松做PowerPoint教案演示正弦波,标签：ppt学习教程,ppt学习网,http://www.xuehuiba.com

您可以多次输入数据，画出多个函数图象以方便观察。要清除这些图象，可以用上面的方法再做一个按钮，按钮上的文字设置为“清除图象”，编辑代码为:

Private Sub CommandButton3_Click()
SlideShowWindows(1).View.EraseDrawing
End Sub

想要一个坐标系?呵呵，如果您不怕麻烦，当然可以了。做第三个按钮，按钮文字为“画坐标系”，编辑代码为:

rivate Sub CommandButton3_Click()
h = 100
k = 200
Length = 15.7
Number = 500
Dim xx
xx = 1
Do While xx < Number
If xx Mod 4 = 0 Then
SlideShowWindows(1).View.DrawLine h + xx * Length, k - 7, h + xx * Length, k
SlideShowWindows(1).View.DrawLine h - xx * Length, k - 7, h - xx * Length, k
SlideShowWindows(1).View.DrawLine h, k - xx * (Length + 4.3), h + 7, k - xx * (Length + 4.3) www.xuehuiba.com
SlideShowWindows(1).View.DrawLine h, k + xx * (Length + 4.3), h + 7, k + xx * (Length + 4.3)
Else
SlideShowWindows(1).View.DrawLine h + xx * Length, k - 3, h + xx * Length, k
SlideShowWindows(1).View.DrawLine h - xx * Length, k - 3, h - xx * Length, k
SlideShowWindows(1).View.DrawLine h, k - xx * (Length + 4.3), h + 3, k - xx * (Length + 4.3)
SlideShowWindows(1).View.DrawLine h, k + xx * (Length + 4.3), h + 3, k + xx * (Length + 4.3)
End If
xx = xx + 1
Loop
SlideShowWindows(1).View.DrawLine h, k, h + xx * Length, k
SlideShowWindows(1).View.DrawLine h - xx * Length, k, h, k
SlideShowWindows(1).View.DrawLine h, k, h, k - xx * Length
SlideShowWindows(1).View.DrawLine h, k, h, k + xx * Length
End Sub

行了，再试一次。如图6所示。呵呵，够“专业”吧?用它来演示正弦波，不错吧?

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