'判断点在区域内函数 /VP #J<6L
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 M?;YpaSe+
Dim aob, boc, cod, doa, sum As Single S6C D K:
If ppx = p1x And ppy = p1y Then .W$9nbly
point_in = True @MoCEtt
Exit Function b$pCp`/MT
End If <0m^b#hdG
If ppx = p2x And ppy = p2y Then `Fe/=]< $
point_in = True Os].
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Exit Function r+6 DlT
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End If <g\:By^
If ppx = p3x And ppy = p3y Then s jaaZx1
point_in = True
rf 60'
Exit Function , 1-idpnX
End If 8Fbt >-N<\
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aob = ff_angle(p1x, p1y, ppx, ppy, p2x, p2y) O3d Qno
boc = ff_angle(p2x, p2y, ppx, ppy, p3x, p3y) j~ =<O<P
cod = ff_angle(p3x, p3y, ppx, ppy, p4x, p4y) [#SO} '1n
doa = ff_angle(p4x, p4y, ppx, ppy, p1x, p1y) 0S
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sum = aob + boc + cod + doa SOMAs'=
If 360.01 > sum And sum > 359.99 Then m;IKV,
point_in = True #N'9F&:V$
Else F9(jx#J~t
point_in = False `K[r5;QFKf
End If |mdf u=
End Function
