'判断点在区域内函数 t?{E_70W
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 Lv#DIQ8y
Dim aob, boc, cod, doa, sum As Single DUY#RJf
If ppx = p1x And ppy = p1y Then K2)),_,@5+
point_in = True G4ZeO :r
Exit Function l6a,:*_
End If {8b6A~/
If ppx = p2x And ppy = p2y Then 6rdm=8WFA
point_in = True `/0X].s#o
Exit Function c1e7h l
End If llQDZ}T
If ppx = p3x And ppy = p3y Then YAd.i@^
point_in = True [ bE9Y;
Exit Function `W{Ye=|[d#
End If O{LWQ"@y
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aob = ff_angle(p1x, p1y, ppx, ppy, p2x, p2y) 3 u-j`7
boc = ff_angle(p2x, p2y, ppx, ppy, p3x, p3y) T4._ S:~
cod = ff_angle(p3x, p3y, ppx, ppy, p4x, p4y) K*p^Gs ,
doa = ff_angle(p4x, p4y, ppx, ppy, p1x, p1y) %v n rLt$
sum = aob + boc + cod + doa Hd6Qy {,*-
If 360.01 > sum And sum > 359.99 Then A*E$_N
point_in = True Jg |/ *Or
Else q'{E $V)E
point_in = False RIb<
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End If } _XKO\
End Function
