'判断点在区域内函数 \:/ :S"-
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 eZ^-gk?
Dim aob, boc, cod, doa, sum As Single J|z >5Z
If ppx = p1x And ppy = p1y Then ~J Xqyw}
point_in = True (K(6`~
Exit Function X_0Ta_u?T
End If ,,-g*[/3
If ppx = p2x And ppy = p2y Then ATb[/=hP<R
point_in = True (gn)<JJS}
Exit Function Mk -Rl
End If B.-1wZl
If ppx = p3x And ppy = p3y Then mar
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point_in = True xxlYn9ke
Exit Function 8
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End If _26~<gU8
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aob = ff_angle(p1x, p1y, ppx, ppy, p2x, p2y) c9
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boc = ff_angle(p2x, p2y, ppx, ppy, p3x, p3y) >,Zf3M
cod = ff_angle(p3x, p3y, ppx, ppy, p4x, p4y) D/$$"AT
doa = ff_angle(p4x, p4y, ppx, ppy, p1x, p1y) D6KYkN(,v
sum = aob + boc + cod + doa T!T6M6?
If 360.01 > sum And sum > 359.99 Then =h4*
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point_in = True ;be2sTo
Else Ris5) *7
point_in = False nM)q;9-ni
End If -|l^- Qf!
End Function
