'判断点在区域内函数 L T!X|O.
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 q1j[eru
Dim aob, boc, cod, doa, sum As Single 3H2'HO
If ppx = p1x And ppy = p1y Then l,3tU|V
point_in = True 23m+"4t
Exit Function iWEYSi\)n
End If UHwrssX&3
If ppx = p2x And ppy = p2y Then SX.v5plhc
point_in = True Ib C)F> Dq
Exit Function ]y/:#^M+
End If /fEXAk
If ppx = p3x And ppy = p3y Then xae7#d0
point_in = True -u(#V#}OV?
Exit Function
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End If }#@LZ)]hK
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aob = ff_angle(p1x, p1y, ppx, ppy, p2x, p2y) iQQJ`
boc = ff_angle(p2x, p2y, ppx, ppy, p3x, p3y) scmb DaOn
cod = ff_angle(p3x, p3y, ppx, ppy, p4x, p4y) j
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doa = ff_angle(p4x, p4y, ppx, ppy, p1x, p1y) (G
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sum = aob + boc + cod + doa 0&|-wduR=
If 360.01 > sum And sum > 359.99 Then XooAL0w
point_in = True G9TUU.T
Else >jm9x1+C
point_in = False F$v
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End If 7Udr~ 0_)
End Function
