safeng1122 |
2013-04-08 13:21 |
'判断点在区域内函数 `8M{13fv 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 #|-i*2@oR Dim aob, boc, cod, doa, sum As Single jJbS{1z If ppx = p1x And ppy = p1y Then &65I
6 point_in = True mH6\8I Exit Function (_IP z)F End If U'*~Ju If ppx = p2x And ppy = p2y Then q[}W&t, point_in = True ;V v.$mI Exit Function [$]qJ~kz End If `]F}O \H If ppx = p3x And ppy = p3y Then tw
k point_in = True \&BT#8ELG Exit Function o*_arzhA End If N.'-9hv tY@+d*u aob = ff_angle(p1x, p1y, ppx, ppy, p2x, p2y) JIatRc?g boc = ff_angle(p2x, p2y, ppx, ppy, p3x, p3y) dC>[[_ cod = ff_angle(p3x, p3y, ppx, ppy, p4x, p4y) fD3>g{ doa = ff_angle(p4x, p4y, ppx, ppy, p1x, p1y) pL5Bz!_r sum = aob + boc + cod + doa ,8@q2a/ If 360.01 > sum And sum > 359.99 Then __%){j6 point_in = True #b,!N Else z?<Xx?Kk point_in = False <IBWA0A=8a End If -[}Ah NYK End Function
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