'判断点在区域内函数 f 6 k =ew
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 IB\O[R$x
Dim aob, boc, cod, doa, sum As Single N/6! |F
If ppx = p1x And ppy = p1y Then }^tW's8
point_in = True -"uOh,G}
Exit Function &5d~ODO
End If 1'4?}0Dok
If ppx = p2x And ppy = p2y Then c.4WwzK
point_in = True ^bk: g}o
Exit Function (bp4ly^
End If mr2fNA>kR
If ppx = p3x And ppy = p3y Then ,4--3 MU
point_in = True p!>DA?vF
Exit Function /l>!7
End If F_ -}GN%
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aob = ff_angle(p1x, p1y, ppx, ppy, p2x, p2y) >0E3Em<(}l
boc = ff_angle(p2x, p2y, ppx, ppy, p3x, p3y) H[2W (q6
cod = ff_angle(p3x, p3y, ppx, ppy, p4x, p4y) i[ /`9 AK
doa = ff_angle(p4x, p4y, ppx, ppy, p1x, p1y) $|m'~AmI
sum = aob + boc + cod + doa P"f4`q
If 360.01 > sum And sum > 359.99 Then *3\ N j6
point_in = True "6q@}sz!
Else ke b.%cb=
point_in = False S\L^ZH?[2
End If zmhL[1qj
End Function
