'判断点在区域内函数 p?dGZ2` [I
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 s`8M%ZLu
Dim aob, boc, cod, doa, sum As Single >>oASo
If ppx = p1x And ppy = p1y Then v$gMLu=
point_in = True Bq$e|t)'
Exit Function HI"!n$p
End If "TBQNWZ
If ppx = p2x And ppy = p2y Then l}2%?d
point_in = True jSeA%Te
Exit Function jMz1s%C
End If )8 "EI-/.
If ppx = p3x And ppy = p3y Then Sb:zN'U
point_in = True QrNL7{
Exit Function &;6|nl9;
End If r85Xa'hh
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aob = ff_angle(p1x, p1y, ppx, ppy, p2x, p2y) %=NM_5a}]
boc = ff_angle(p2x, p2y, ppx, ppy, p3x, p3y) |xsV(jK8
cod = ff_angle(p3x, p3y, ppx, ppy, p4x, p4y) )Dk0V!%N
doa = ff_angle(p4x, p4y, ppx, ppy, p1x, p1y) Z,|1G6f@
sum = aob + boc + cod + doa PBxK>a
If 360.01 > sum And sum > 359.99 Then 3PvZ_!G
point_in = True H y.3ccZ0
Else `_ J^g&y~
point_in = False y~]IVl"
End If Y^c,mK^
End Function