'判断点在区域内函数 \1B*iW
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 Hm^p^,}_x
Dim aob, boc, cod, doa, sum As Single V+K.'
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If ppx = p1x And ppy = p1y Then yq,5M1 vR
point_in = True _bz,G"w+:
Exit Function ?x/ L"h&Kp
End If Q Y fS-
If ppx = p2x And ppy = p2y Then f!I e
point_in = True ^
pR&
Exit Function nW%c95E
End If Wl2>U (lj
If ppx = p3x And ppy = p3y Then xX>448=
point_in = True wb9zJAsc
Exit Function UX9o
End If 6%xl}z]o
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aob = ff_angle(p1x, p1y, ppx, ppy, p2x, p2y) bcE DjLXq
boc = ff_angle(p2x, p2y, ppx, ppy, p3x, p3y) wIiT
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cod = ff_angle(p3x, p3y, ppx, ppy, p4x, p4y) _0` O }
doa = ff_angle(p4x, p4y, ppx, ppy, p1x, p1y) \^:f4Z T
sum = aob + boc + cod + doa : R&tO3_F
If 360.01 > sum And sum > 359.99 Then /kq~*s
point_in = True Y+7v~/K=
Else 87/{ \h
point_in = False MLb\:Ihy
End If 1f: k:Y9i
End Function
