safeng1122 |
2013-04-08 13:21 |
'判断点在区域内函数 W!!S!JF 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 jn >d*9u Dim aob, boc, cod, doa, sum As Single $;M:TpX If ppx = p1x And ppy = p1y Then h7*W*Bd point_in = True @yXfBML?] Exit Function RB* J= End If U7uKRv9 If ppx = p2x And ppy = p2y Then B+C);WQ, point_in = True Uy
? Exit Function )*; zW!H End If '0y9MXRT If ppx = p3x And ppy = p3y Then VvFC -r,=G point_in = True ~c)~015` Exit Function DypFl M* End If Uw,2}yR 6hZ@;Q=b aob = ff_angle(p1x, p1y, ppx, ppy, p2x, p2y) P0H6mn* boc = ff_angle(p2x, p2y, ppx, ppy, p3x, p3y) cLPkK3O\= cod = ff_angle(p3x, p3y, ppx, ppy, p4x, p4y) 8:BIbmtt5 doa = ff_angle(p4x, p4y, ppx, ppy, p1x, p1y) J_Ltuso sum = aob + boc + cod + doa XNQAi (!GS If 360.01 > sum And sum > 359.99 Then }ENR{vz$A point_in = True
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q Else / kt2c[9 point_in = False ~%?`P/.o End If .q&'&~!_ End Function
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