用VB程序怎么做一个心型图？

Dim X1, Y1, X2, Y2 As Integer

Dim I As Integer

Dim J As Boolean

Dim K As IntegerDim WithEvents Label1 As Label

Dim WithEvents Timer1 As TimerPrivate Sub Form_Activate()

I = 100

K = 100

X1 = Me.Width / 2

Y1 = Me.Height / 3

X2 = X1

Y2 = Y1

Label1.Top = Me.Height / 2 - Label1.Height / 2

Label1.Left = Me.Width / 2 - Label1.Width / 2

End SubPrivate Sub Form_Load() Me.BackColor = &H0&

Me.FillColor = RGB(Rnd * 255, Rnd * 255, Rnd * 255)

Me.ForeColor = RGB(Rnd * 255, Rnd * 255, Rnd * 255)

Me.DrawMode = 13

Me.DrawWidth = 2

Me.FillStyle = 7

Set Label1 = Me.Controls.Add("VB.Label", "Label1")

Set Timer1 = Me.Controls.Add("VB.Timer", "Timer1")

Label1.Visible = True

Label1.AutoSize = True

Label1.BackStyle = 0

Label1.Caption = "I LOVE YOU"

Label1.Font.Size = 60

Label1.ForeColor = &HFF00&

Timer1.Enabled = True

Timer1.Interval = 10

Me.WindowState = 2

End SubPrivate Sub Timer1_Timer()

Me.Circle (X1, Y1), 250

Me.Circle (X2, Y2), 250

If Y1 <= Me.Height - 1200 Then

X1 = X1 + K

Y1 = Y1 - I

X2 = X2 - K

Y2 = Y2 - I

I = I - 2

If Y1 <= Me.Height / 3 Then

K = K - 1

ElseIf Y1 >= Me.Height / 3 Then

K = K - 5

End If

Else

I = 100

K = 100

X1 = Me.Width / 2

Y1 = Me.Height / 3

X2 = X1

Y2 = Y1

Me.FillColor = RGB(Rnd * 255, Rnd * 255, Rnd * 255)

Me.ForeColor = RGB(Rnd * 255, Rnd * 255, Rnd * 255) End If

Me.DrawWidth = 3

Me.PSet (Rnd * Me.Width, Rnd * Me.Height), RGB(Rnd * 225, Rnd * 225, Rnd * 225)

Me.DrawWidth = 2

End SubPrivate Sub Form_Click()

End

End SubPrivate Sub Form_KeyDown(KeyCode As Integer, Shift As Integer)

End

End Sub

1、心形线的数学定义。

2、编制的绘制心形线的matlab程序代码，如下图所示：

3、当a=10 时，绘制的心形线，如下图所示：

4、当a逐渐增大时的心形线，如下图所示（采用子图模式）：

5、绘制三维的心形图形，下面是编制的代码：

6、下面这幅图片是上一步绘制的三维心形图形。如下图所示：

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