'判断点在区域内函数 u'9gVU B
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 [p;*r)f2}
Dim aob, boc, cod, doa, sum As Single Yt1mB[&f^
If ppx = p1x And ppy = p1y Then #JNy
point_in = True Uf,fX/:!
Exit Function H;vZm[\0N-
End If Z-Wfcnk
If ppx = p2x And ppy = p2y Then =v2%Vs\7k
point_in = True eO5ktEoJ
Exit Function cFfTYP9
End If vgPUIxB@
If ppx = p3x And ppy = p3y Then &/F_*=VE
point_in = True `bgb*Yaod
Exit Function 4!%]fg}Um
End If &{^eU5
>Gd.&flSj
aob = ff_angle(p1x, p1y, ppx, ppy, p2x, p2y) w$Ux?y-L
boc = ff_angle(p2x, p2y, ppx, ppy, p3x, p3y) 'Tf9z+0;
cod = ff_angle(p3x, p3y, ppx, ppy, p4x, p4y) 9 pKm*n&
doa = ff_angle(p4x, p4y, ppx, ppy, p1x, p1y) #a}N"*P
sum = aob + boc + cod + doa n
E:'Zxj
If 360.01 > sum And sum > 359.99 Then R8sck)k'}
point_in = True ~Yk"Hos
Else q(9%^cV6
point_in = False r%MyR8'k]
End If rZC3\,W
End Function