'判断点在区域内函数 JG`Q;K
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 @r(Z%j7
Dim aob, boc, cod, doa, sum As Single #H [Bb2(j
If ppx = p1x And ppy = p1y Then #BVtL :x@
point_in = True XKL3RMF9r
Exit Function sML=5=otx
End If QB!~Wh
If ppx = p2x And ppy = p2y Then -F&U
point_in = True _i_Q?w`
Exit Function rj]F87"
End If 8eIUsI.o
If ppx = p3x And ppy = p3y Then |rw%FM{F
point_in = True z2gk[zY&
Exit Function Th[f9H%
End If qL$a
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aob = ff_angle(p1x, p1y, ppx, ppy, p2x, p2y) d9*hBm
boc = ff_angle(p2x, p2y, ppx, ppy, p3x, p3y) TQX)?^Ft
cod = ff_angle(p3x, p3y, ppx, ppy, p4x, p4y) l}^3fQXI
doa = ff_angle(p4x, p4y, ppx, ppy, p1x, p1y) =.<@`1
sum = aob + boc + cod + doa 0l*]L`]L#
If 360.01 > sum And sum > 359.99 Then nZ1zJpBmI
point_in = True (GnuWc\p
Else ~9^)wCM+
point_in = False ,&PE6hn
End If 5S
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End Function