'判断点在区域内函数 <H::{
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 tT>~;l%'
Dim aob, boc, cod, doa, sum As Single LzEs_B=9
If ppx = p1x And ppy = p1y Then 1-!u=]JDE
point_in = True ^(r?k_i/
Exit Function Zu951+&`
End If LS}dt?78`V
If ppx = p2x And ppy = p2y Then +q[puFfl
point_in = True <E[X-S%&
Exit Function *"2TT})
End If sg RY`U.C
If ppx = p3x And ppy = p3y Then yS% IE>?
point_in = True -SnP+X!
Exit Function icLf; @
End If &W)Lzpx8c
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aob = ff_angle(p1x, p1y, ppx, ppy, p2x, p2y) 3R> U^
Y
boc = ff_angle(p2x, p2y, ppx, ppy, p3x, p3y) x>TH yY[sq
cod = ff_angle(p3x, p3y, ppx, ppy, p4x, p4y) x<W`2Du
doa = ff_angle(p4x, p4y, ppx, ppy, p1x, p1y) !)FM/Xj,o
sum = aob + boc + cod + doa f^\qDvPur
If 360.01 > sum And sum > 359.99 Then ~ x-
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point_in = True t`1E4$Bb\
Else #0V$KC*>
point_in = False (P&~PJH
End If ^kA^> vi
End Function
