'判断点在区域内函数 !.t D.(XP
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 *mJ#|3I<
Dim aob, boc, cod, doa, sum As Single $M!iQ"bb
If ppx = p1x And ppy = p1y Then /3SEu(d!
point_in = True (y&sUc9
Exit Function N| >JLZ>
End If } mIN)o
If ppx = p2x And ppy = p2y Then 9Oq(` 4
point_in = True #>,E"-]f
Exit Function AJ& j|/
End If f8N* [by
If ppx = p3x And ppy = p3y Then (U#
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point_in = True 8-k`"QI=
Exit Function JN` $Fq+
End If #ley3rJW]
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aob = ff_angle(p1x, p1y, ppx, ppy, p2x, p2y) C#yRop_d]o
boc = ff_angle(p2x, p2y, ppx, ppy, p3x, p3y) =H;'.!77Hx
cod = ff_angle(p3x, p3y, ppx, ppy, p4x, p4y) /J/V1dC}]D
doa = ff_angle(p4x, p4y, ppx, ppy, p1x, p1y) GI, TE
sum = aob + boc + cod + doa [XDV-6KCE.
If 360.01 > sum And sum > 359.99 Then \-[bU6\A\
point_in = True ~"J1 @<
Else } eHxw+.
point_in = False oPni4^g i
End If _kMHF
End Function
