'判断点在区域内函数 g7H;d
Function point_in(p1x As Single, p1y As Single, p2x As Single, p2y As Single, p3x As Single, p3y As Single, p4x As Single, p4y As Single, ppx As Single, ppy As Single) As Boolean ^NCH)zK]v
Dim aob, boc, cod, doa, sum As Single AV'>
If ppx = p1x And ppy = p1y Then tQ/w\6{
point_in = True wS5hXTb"
Exit Function dfrq8n]
End If -py.YZ
If ppx = p2x And ppy = p2y Then kSJWQ
point_in = True $""[(
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Exit Function z(m*]kpL"
End If "au"\}
If ppx = p3x And ppy = p3y Then 87HVD Di
point_in = True "<&F=gV
Exit Function o+nU {
End If OVd"'|&6_
hsl8@=_ B
aob = ff_angle(p1x, p1y, ppx, ppy, p2x, p2y) ;?y?s'>t&
boc = ff_angle(p2x, p2y, ppx, ppy, p3x, p3y) @ NVq
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cod = ff_angle(p3x, p3y, ppx, ppy, p4x, p4y) vxwctJ&
doa = ff_angle(p4x, p4y, ppx, ppy, p1x, p1y) S)~h|&A(
sum = aob + boc + cod + doa ~E!"YkIr
If 360.01 > sum And sum > 359.99 Then p7k0pSt
point_in = True e88JT_zrO
Else hcBfau; r
point_in = False p5bH-km6
End If s<5t}{x
End Function