| safeng1122 |
2013-04-08 13:21 |
'判断点在区域内函数 We]mm3M3 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 WZkAlg7Z Dim aob, boc, cod, doa, sum As Single w-9FF%@< If ppx = p1x And ppy = p1y Then =<nx[J point_in = True ~4HS
2\ Exit Function u;$g13 End If WVPnyVDc If ppx = p2x And ppy = p2y Then 4N&4TUIM point_in = True +
k1|+zzS Exit Function rv/O^aL`Y End If 24u;'i-y5 If ppx = p3x And ppy = p3y Then X"yjsk point_in = True >cm*_26;I Exit Function qi!Nv$e End If 7}+U;0,) &m@~R| aob = ff_angle(p1x, p1y, ppx, ppy, p2x, p2y) h`X>b/V boc = ff_angle(p2x, p2y, ppx, ppy, p3x, p3y) &6*X&]V!Z cod = ff_angle(p3x, p3y, ppx, ppy, p4x, p4y) x[]}Jf{t doa = ff_angle(p4x, p4y, ppx, ppy, p1x, p1y) F2QX ^* sum = aob + boc + cod + doa iQry X(z If 360.01 > sum And sum > 359.99 Then 9H$$Og point_in = True zNe>fZ
Else BJzNh>-#= point_in = False 6|q\ M End If u(W%snl End Function
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