'判断点在区域内函数 7d'4"c;*;
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 w#XE!8`
Dim aob, boc, cod, doa, sum As Single 9I30ULm
If ppx = p1x And ppy = p1y Then 8>Ervi`
point_in = True LNk
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Exit Function fs>0{
End If 0#sk ]Qz
If ppx = p2x And ppy = p2y Then cnCUvD]'
point_in = True HmRwh
Exit Function ] p'+F
End If
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If ppx = p3x And ppy = p3y Then iT9cw`A^%
point_in = True z9;vE7n!
Exit Function pB?a5jpA
End If k=nfo-h
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aob = ff_angle(p1x, p1y, ppx, ppy, p2x, p2y) OdwSNG
boc = ff_angle(p2x, p2y, ppx, ppy, p3x, p3y) /i
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cod = ff_angle(p3x, p3y, ppx, ppy, p4x, p4y) >i@gR
doa = ff_angle(p4x, p4y, ppx, ppy, p1x, p1y) `d3S0N6@
sum = aob + boc + cod + doa v`x~O+
If 360.01 > sum And sum > 359.99 Then ][wS}~):
point_in = True 6sB!m|zm]:
Else l]3g6c
point_in = False G9Azd^3
End If a,&Kvh
End Function