'判断点在区域内函数 .`4N#EjP
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 yGl
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Dim aob, boc, cod, doa, sum As Single Ezw(J[).C
If ppx = p1x And ppy = p1y Then z^=.05jB
point_in = True Zj;2>
Exit Function ?d`?Ss;v
End If W70J2
If ppx = p2x And ppy = p2y Then Ql8E9~h
point_in = True /VB n
Exit Function OMG.64DX .
End If @a,X{0
If ppx = p3x And ppy = p3y Then ='f<_FD
point_in = True Yjxa=CD
Exit Function ~@=:I
End If 5
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aob = ff_angle(p1x, p1y, ppx, ppy, p2x, p2y) ?Pz:H/$
boc = ff_angle(p2x, p2y, ppx, ppy, p3x, p3y) 4Fhiac
cod = ff_angle(p3x, p3y, ppx, ppy, p4x, p4y) Kl.xe&t@j
doa = ff_angle(p4x, p4y, ppx, ppy, p1x, p1y) zA[6rYXY
sum = aob + boc + cod + doa O[[:3!6q
If 360.01 > sum And sum > 359.99 Then [AE-~+m)^
point_in = True fhqc[@Y[
Else xi=Z<G
point_in = False | ZBv;BW
End If cQEK>aAd
End Function