'判断点在区域内函数 =aB+|E
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 -KC@M
Dim aob, boc, cod, doa, sum As Single NTq_"`JjZ
If ppx = p1x And ppy = p1y Then <J%Z?3@T
point_in = True #EUT"^:d
Exit Function wA$?e}
End If r4P%.YO+X
If ppx = p2x And ppy = p2y Then ]CNPy$>*
point_in = True KH#z =_
Exit Function CP\[9#]:
End If 2fkyz
If ppx = p3x And ppy = p3y Then i45.2,
point_in = True S}rEQGGR{
Exit Function &v0]{)PO
End If ?J2A.x5`a
@,oc%m
aob = ff_angle(p1x, p1y, ppx, ppy, p2x, p2y) wowf1j-
boc = ff_angle(p2x, p2y, ppx, ppy, p3x, p3y) %iNgHoH
cod = ff_angle(p3x, p3y, ppx, ppy, p4x, p4y) (pCHj'
doa = ff_angle(p4x, p4y, ppx, ppy, p1x, p1y) K@e2%hk9x
sum = aob + boc + cod + doa h{7>>
If 360.01 > sum And sum > 359.99 Then
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point_in = True vmNo~clt\
Else Xbmsq,*]
point_in = False \2+ngq)
End If 8!35
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End Function