'判断点在区域内函数 -fE.<)m=!
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 JVtQ ,oZ
Dim aob, boc, cod, doa, sum As Single *5_V*v 6
If ppx = p1x And ppy = p1y Then QK)) { cK
point_in = True pkJ /oT
Exit Function :0$a.8Y\++
End If v??TJ^1
If ppx = p2x And ppy = p2y Then u*3NS$vH
point_in = True =; 0wFwSz
Exit Function ohUdGO[/
End If hi ~}
If ppx = p3x And ppy = p3y Then _AFQ >j
point_in = True jMM$ d,7B
Exit Function JK]R*!{n
End If MtS3p>4
~ 3^='o
aob = ff_angle(p1x, p1y, ppx, ppy, p2x, p2y) T*?s@$)m4
boc = ff_angle(p2x, p2y, ppx, ppy, p3x, p3y) kH'p\9=
cod = ff_angle(p3x, p3y, ppx, ppy, p4x, p4y) .N,&Uv-
doa = ff_angle(p4x, p4y, ppx, ppy, p1x, p1y) tF*szf|$-
sum = aob + boc + cod + doa 7p.>\YtoR}
If 360.01 > sum And sum > 359.99 Then %Y]=1BRk}
point_in = True xl(@C*.sC1
Else =pcF:D#+
point_in = False G O{ . 9_2
End If :4:N f
End Function
