'判断点在区域内函数 zw$\d1-+h
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 (e!Yu#-
Dim aob, boc, cod, doa, sum As Single Knb(MI6
If ppx = p1x And ppy = p1y Then fZsw+PSy
point_in = True kjdIk9 Y
Exit Function s~B)xYmyB'
End If UGgo;e
If ppx = p2x And ppy = p2y Then }2m>S6""A
point_in = True $dK430_B
Exit Function yENAc sv
End If "zTy_0[;
If ppx = p3x And ppy = p3y Then <ME>#,
point_in = True f2SJ4"X
Exit Function ;1nXJ{jKw
End If /dvronG
i`];xNR'
aob = ff_angle(p1x, p1y, ppx, ppy, p2x, p2y) ZPq.|6&
boc = ff_angle(p2x, p2y, ppx, ppy, p3x, p3y) S>*i\OnI'
cod = ff_angle(p3x, p3y, ppx, ppy, p4x, p4y) ?@FqlWz ,
doa = ff_angle(p4x, p4y, ppx, ppy, p1x, p1y) Lr6C@pI
sum = aob + boc + cod + doa `Je1$)%
If 360.01 > sum And sum > 359.99 Then )Td{}vbIh
point_in = True I!1+#0SG
Else 8No'8(dPX
point_in = False ~Jw84U{$
End If Pw7uxN`
End Function