'判断点在区域内函数 5@" bx=
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 l!ltgj
Dim aob, boc, cod, doa, sum As Single LDN'o1$qo
If ppx = p1x And ppy = p1y Then 7 6~x|6)
point_in = True L}ud+Wfox
Exit Function z%Ywjfn'
End If .L0pS.=LT
If ppx = p2x And ppy = p2y Then L01R.3Z+
point_in = True B08q/qi
Exit Function _-H uO/
End If !T@>Ld:
If ppx = p3x And ppy = p3y Then *r!1K!c
point_in = True e,>L&9] ZI
Exit Function l7Y^C1hM
End If ^2[0cne
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aob = ff_angle(p1x, p1y, ppx, ppy, p2x, p2y) w:I^iI.
boc = ff_angle(p2x, p2y, ppx, ppy, p3x, p3y) |j&u2DM~#m
cod = ff_angle(p3x, p3y, ppx, ppy, p4x, p4y) "ZEJL.Wy
doa = ff_angle(p4x, p4y, ppx, ppy, p1x, p1y) ',n;ag`c
sum = aob + boc + cod + doa k2sb#]-/}
If 360.01 > sum And sum > 359.99 Then { dhuvB
point_in = True 0PE $n
Else 9Xmb_@7b}
point_in = False HdGAE1eU]}
End If <~!7? ak
End Function