'判断点在区域内函数 ?r"][<
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 X6s6fu;
Dim aob, boc, cod, doa, sum As Single 'j>+eA>
If ppx = p1x And ppy = p1y Then u*u>F@C8
point_in = True `WvNN>R
Exit Function 4/;
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End If DI O @Zo
If ppx = p2x And ppy = p2y Then e6n1/TtqM
point_in = True 2*:lFvwP
Exit Function ncS.~F
End If tX)l$oRPr
If ppx = p3x And ppy = p3y Then JEq0 {_7
point_in = True nHxos`Qx
Exit Function gIv :<EJ9
End If Gxk=]5<7
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aob = ff_angle(p1x, p1y, ppx, ppy, p2x, p2y) [wB-e~
boc = ff_angle(p2x, p2y, ppx, ppy, p3x, p3y) k{>rI2;
cod = ff_angle(p3x, p3y, ppx, ppy, p4x, p4y) -'&4No
doa = ff_angle(p4x, p4y, ppx, ppy, p1x, p1y) ;!U`GN,tH
sum = aob + boc + cod + doa '~i;g.n=}-
If 360.01 > sum And sum > 359.99 Then 5HP6o
point_in = True &Npv~Iy
Else hYRGIpu5
point_in = False -N`j` zb|
End If f&=y\uP]
End Function