| safeng1122 |
2013-04-08 13:21 |
'判断点在区域内函数 taBCE?{ 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 lY$9-Q( Dim aob, boc, cod, doa, sum As Single Gr&YzbSX If ppx = p1x And ppy = p1y Then N!lQ;o' point_in = True )dh_eqnX Exit Function &"6%D|Z0 End If 6<SX%Bc~ If ppx = p2x And ppy = p2y Then }'u0Q6Obj point_in = True 1| XC$0 Exit Function XMlcY;W End If #Y<QEGb( If ppx = p3x And ppy = p3y Then p >h&SD?b point_in = True 4Ai#$SHLm Exit Function /LC!|-1E End If W&=F<n` <wTD}.n aob = ff_angle(p1x, p1y, ppx, ppy, p2x, p2y) 5H!6m_,w boc = ff_angle(p2x, p2y, ppx, ppy, p3x, p3y) |%$mN{ cod = ff_angle(p3x, p3y, ppx, ppy, p4x, p4y) :{=2ih-} doa = ff_angle(p4x, p4y, ppx, ppy, p1x, p1y) 8~|tl, sum = aob + boc + cod + doa ZTzh[2u* If 360.01 > sum And sum > 359.99 Then \Xpq=2` point_in = True jM[]Uh Else 7N8a48$8 point_in = False ~y" ^t@!E End If 2)T.Ci cx End Function
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