'判断点在区域内函数 u`D _
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 I]hjv
Dim aob, boc, cod, doa, sum As Single ` FOCX;
If ppx = p1x And ppy = p1y Then `mA;1S
point_in = True i&?\Pp;5-j
Exit Function t<ZBp0
End If Lq;T\m_de
If ppx = p2x And ppy = p2y Then lX.-qCV"B
point_in = True \Y>b#*m(4
Exit Function n}t 9Nf_
End If ,H%[R+ )
If ppx = p3x And ppy = p3y Then C+g}+
point_in = True %P D}VF/Y
Exit Function HNCu:$Wr@
End If E- [Eg
yjsj+K
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aob = ff_angle(p1x, p1y, ppx, ppy, p2x, p2y) FSm.o?>
boc = ff_angle(p2x, p2y, ppx, ppy, p3x, p3y) +Gg|BTTL/
cod = ff_angle(p3x, p3y, ppx, ppy, p4x, p4y) P;o {t
doa = ff_angle(p4x, p4y, ppx, ppy, p1x, p1y) ^RO<r}B u
sum = aob + boc + cod + doa l i)6^f#
If 360.01 > sum And sum > 359.99 Then 3& CV!+z
point_in = True mt$rjk=
Else 0KTO )K
point_in = False zyhM*eM.7
End If q ajZ~oB{
End Function
