'判断点在区域内函数 eELLnU{"
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 ]A?(OA
Dim aob, boc, cod, doa, sum As Single M Ewa^
If ppx = p1x And ppy = p1y Then >X@4wP7l
point_in = True GZefeBi
Exit Function Nm{+!}cC
End If NUO#[7OK+x
If ppx = p2x And ppy = p2y Then o#Gf7.E8
point_in = True \wZ
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Exit Function \wjT|z1+Y
End If :)9CG!2y<M
If ppx = p3x And ppy = p3y Then aB_~Vh
point_in = True ZVX1@p
Exit Function hkpS}*L9o
End If v[Mh[CyB
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aob = ff_angle(p1x, p1y, ppx, ppy, p2x, p2y) oV/:T\Qn=
boc = ff_angle(p2x, p2y, ppx, ppy, p3x, p3y) AU$<W"%R
cod = ff_angle(p3x, p3y, ppx, ppy, p4x, p4y) G;ihm$Cad
doa = ff_angle(p4x, p4y, ppx, ppy, p1x, p1y) =67ab_V
sum = aob + boc + cod + doa (G6lr%d
If 360.01 > sum And sum > 359.99 Then R$Rub/b6
point_in = True "lVbla4b
Else Yt!o
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point_in = False y&n-8L_
End If $x~U&a
End Function