'判断点在区域内函数 H;t8(-F@'
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 %oCjZ"ke
Dim aob, boc, cod, doa, sum As Single o4[2`mT
If ppx = p1x And ppy = p1y Then s[B6%DI/5
point_in = True zIQc#F6\5
Exit Function mN'9|`>V>
End If u<y\iZ[
If ppx = p2x And ppy = p2y Then 6pn@`UK
point_in = True #c)Ou!Ldb
Exit Function /6+%(f}7l
End If V\M!]Nnxr
If ppx = p3x And ppy = p3y Then kz VI:
point_in = True 7SY->-H8
Exit Function *ckrn>E{h
End If FTYLMQ
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aob = ff_angle(p1x, p1y, ppx, ppy, p2x, p2y) zHs
boc = ff_angle(p2x, p2y, ppx, ppy, p3x, p3y) 33KPo0g7
cod = ff_angle(p3x, p3y, ppx, ppy, p4x, p4y) UH^wyKbM
doa = ff_angle(p4x, p4y, ppx, ppy, p1x, p1y) g1*H|nh2
sum = aob + boc + cod + doa "xc*A&Sg
If 360.01 > sum And sum > 359.99 Then "g:&Ge*X
point_in = True sV'.Bomq
Else ]>4Qs
point_in = False JdYF&~
End If <:{[Zvl'k
End Function