'判断点在区域内函数 CDF;cM"td
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 $}IG+,L
Dim aob, boc, cod, doa, sum As Single ck%.D%=
If ppx = p1x And ppy = p1y Then s$zm)y5
point_in = True \03<dUA6
Exit Function Z
t4q=
Lr
End If <2oMk#Ng^
If ppx = p2x And ppy = p2y Then [MQ* =*
point_in = True p0y|pD
Exit Function skXzck
End If >Tjl?CS
If ppx = p3x And ppy = p3y Then 1;KJUf[N
point_in = True *|j4>W\J
Exit Function H5#]MOAP
End If m,"-/)
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p*T[J
aob = ff_angle(p1x, p1y, ppx, ppy, p2x, p2y) daP_Kz/2K
boc = ff_angle(p2x, p2y, ppx, ppy, p3x, p3y) BQ<\[H;
cod = ff_angle(p3x, p3y, ppx, ppy, p4x, p4y) |'&$VzA
doa = ff_angle(p4x, p4y, ppx, ppy, p1x, p1y) o=#ym4hJ%
sum = aob + boc + cod + doa +*xc4
If 360.01 > sum And sum > 359.99 Then #?+[|RS|
point_in = True ~ o2Z5,H
Else kGs\"zZM
point_in = False u Fw1%
End If AbhR*
End Function