'判断点在区域内函数 B{In
"R8
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 JUf{;nt
Dim aob, boc, cod, doa, sum As Single Q>G lA
If ppx = p1x And ppy = p1y Then |JR;E$
point_in = True 2l8TX #K
Exit Function &fIx2ZM[
End If AUan^Om
If ppx = p2x And ppy = p2y Then H.n+CR
point_in = True _#kjiJj*
Exit Function zvDg1p
End If wva| TZ
If ppx = p3x And ppy = p3y Then _olhCLIR-
point_in = True Ot^<:\<`G
Exit Function K;n5[o&c
End If Qd{h3K^hlu
F+lsza
aob = ff_angle(p1x, p1y, ppx, ppy, p2x, p2y) GC<zL}
boc = ff_angle(p2x, p2y, ppx, ppy, p3x, p3y) W@T_-pTCjK
cod = ff_angle(p3x, p3y, ppx, ppy, p4x, p4y) !,I530eh7
doa = ff_angle(p4x, p4y, ppx, ppy, p1x, p1y) A3!xYG=+
sum = aob + boc + cod + doa Wg V'T#*
If 360.01 > sum And sum > 359.99 Then AXQG
point_in = True aS7%x>.A!
Else Me.t_)
point_in = False #nzVgV]
End If ff1Em.
End Function