'判断点在区域内函数 z@Uf@~+U
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 FQe82tfV+
Dim aob, boc, cod, doa, sum As Single ]
^ s ,
If ppx = p1x And ppy = p1y Then PBOZ^%k
point_in = True oD.[T)G?
Exit Function ^_ST#fFS
End If ; S~
If ppx = p2x And ppy = p2y Then fP8iz `n
point_in = True yOswqhz
Exit Function nsN|[E8
End If )8&;Q9'o
If ppx = p3x And ppy = p3y Then EWC{896,
point_in = True <! Z06
Exit Function [ f;o3
End If $!v:@vNMs
@Yj+ u2!
aob = ff_angle(p1x, p1y, ppx, ppy, p2x, p2y) ~-2Gx
HO`
boc = ff_angle(p2x, p2y, ppx, ppy, p3x, p3y) h/pm$9A
cod = ff_angle(p3x, p3y, ppx, ppy, p4x, p4y) kHb H{])
doa = ff_angle(p4x, p4y, ppx, ppy, p1x, p1y) #5X535'ze
sum = aob + boc + cod + doa !]C=5~B BI
If 360.01 > sum And sum > 359.99 Then T)o>U &KNP
point_in = True .K`EflN
Else k9m9IE"9=$
point_in = False m <'&`B;
End If Bdr'd? u<A
End Function
