'判断点在区域内函数 k]I<%
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 kiqq_`66
Dim aob, boc, cod, doa, sum As Single :vV?Yv%P)n
If ppx = p1x And ppy = p1y Then T[ mTA>d
point_in = True !X
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Exit Function 3MkF
End If ^"*r'
If ppx = p2x And ppy = p2y Then ~#) DJ
point_in = True N2q'$o
Exit Function dL[mX .j"
End If 5UjXpS
If ppx = p3x And ppy = p3y Then |A5]hL
point_in = True mufF_e)
Exit Function _gw~A{O
End If #[Ns\%Ri0
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aob = ff_angle(p1x, p1y, ppx, ppy, p2x, p2y) 7\5 [lM
boc = ff_angle(p2x, p2y, ppx, ppy, p3x, p3y) 1/j}VC
cod = ff_angle(p3x, p3y, ppx, ppy, p4x, p4y) w[]7{D];
doa = ff_angle(p4x, p4y, ppx, ppy, p1x, p1y) tPFV6n
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sum = aob + boc + cod + doa O:k@'&
If 360.01 > sum And sum > 359.99 Then Nu|?s-
point_in = True qRB&R$
Else )UN@|IX
point_in = False o5AyJuS-u$
End If .VWH
End Function