2024年5月31日发(作者：)

'新建窗体，添加command1,label1,hscroll1,timer1,picture1

Const pi = 3.1415926

Dim angle As Integer

Private Sub Form_Load() '调整空间尺寸，位置及初始参数

ode = 3

n = "曲柄滑块机构的演示"

= 5000

= 3500

ode = 3

draw = True

0, 0, idth, 150

n = "开始(&B)"

20, 160, 70, 30

n = "速度："

120, 170, 100, 30

= 1

= 20

160, 160, 140, 30

al = 20

d = False

End Sub

Private Sub Command1_Click()

d = Not d

If d Then

n = "暂停(&S)"

Else

n = "开始(&B)"

End If

End Sub

Sub draw(ByVal ox As Integer, ByVal oy As Integer, ByVal orad As Integer)

'ox,oy圆心坐标,orad半径

angle = (angle + ) Mod 360

xo = ox + orad * Cos(angle * pi / 180) '圆周上的铰链点坐标(xo,yo)

yo = oy + orad * Sin(angle * pi / 180)

xs = Sqr((4 * orad) ^ 2 - 10 ^ 2) + xo '滑块的左边界x坐标，连杆长

度取4*orad,滑块高度取20(像素)

lor = lor

yle = 0 '实线

dth = 2 '线宽2

(ox + 2 * orad, oy)-(ox + 6 * orad, oy) '壁面

(ox, oy)-(xo, yo) '连接圆心与圆周上的铰链点

(xs, oy - 10)-(xo, yo), vbBlue '连接滑块与圆周上的铰

链点

yle = 1 '透明填充

(ox, oy), orad '画圆

yle = 0 '实体填充

lor = vbWhite '圆心

(ox, oy), 5

lor = vbGreen '圆周上的铰链点

(xo, yo), 4

lor = vbRed '滑块

(xs, oy - 20)-(xs + 30, oy), , B

yle = 2 '虚线

dth = 1 '线宽1

For i = 0 To 9 '表示壁面的虚线

(i * 4 * orad / 10 + ox + 2 * orad, oy)-(i * 4 *

orad / 10 + ox + 2 * orad + 20, oy + 20)

Next

End Sub

Private Sub Timer1_Timer() '画

draw 60, 60, 40

End Sub