'判断点在区域内函数 ;!=i|"PG
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 IC8%E3
Dim aob, boc, cod, doa, sum As Single ~:0w%
If ppx = p1x And ppy = p1y Then zkqn>
point_in = True f52P1V]
Exit Function f9<"
End If ^A=tk!C
If ppx = p2x And ppy = p2y Then C4gES"T
point_in = True imzPVGCD{
Exit Function ]auqf
End If qP&:9eL
If ppx = p3x And ppy = p3y Then ~Ma r
point_in = True f)a0 !U 44
Exit Function 6rD]6#D
End If ZQ*Us*9I
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aob = ff_angle(p1x, p1y, ppx, ppy, p2x, p2y) olL? 6)gC
boc = ff_angle(p2x, p2y, ppx, ppy, p3x, p3y) d:^B2~j
cod = ff_angle(p3x, p3y, ppx, ppy, p4x, p4y) Z^'\()3t
doa = ff_angle(p4x, p4y, ppx, ppy, p1x, p1y) TXyiCS3
sum = aob + boc + cod + doa W[j,QU
If 360.01 > sum And sum > 359.99 Then ,LSiQmV5
point_in = True ]e7?l/N[
Else (dQ=i
point_in = False ITn PF{N
End If `F&~SU,
End Function