'判断点在区域内函数 D fb& / }
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 ;kbz( :wA
Dim aob, boc, cod, doa, sum As Single +[ F8>9o&
If ppx = p1x And ppy = p1y Then jmIP c3O0
point_in = True /vMpSN|3
Exit Function i <bs{Cu_S
End If pmS=$z;I
If ppx = p2x And ppy = p2y Then V= _8G3
point_in = True j\a?n4g -
Exit Function >C i=H(8vN
End If A1C@'9R*
If ppx = p3x And ppy = p3y Then 09"~<W8
point_in = True DlP}Fp {
Exit Function NF.S Gga
End If q8 oEb
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aob = ff_angle(p1x, p1y, ppx, ppy, p2x, p2y) !cpBX>{w
boc = ff_angle(p2x, p2y, ppx, ppy, p3x, p3y) WC4Il
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cod = ff_angle(p3x, p3y, ppx, ppy, p4x, p4y) k @ 2gw]y"
doa = ff_angle(p4x, p4y, ppx, ppy, p1x, p1y) 82<L07fB
sum = aob + boc + cod + doa FD*y[A
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If 360.01 > sum And sum > 359.99 Then pv T!6+
point_in = True Qhr:d`@^]
Else SbZk{lWcq
point_in = False *<hpq)
End If , ^nUi c
End Function
