| safeng1122 |
2013-04-08 13:21 |
'判断点在区域内函数 uh3%}2'P 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 [rv"tz= Dim aob, boc, cod, doa, sum As Single w:
~66 TCI If ppx = p1x And ppy = p1y Then *
c]
:,5 point_in = True Z9s tB>? Exit Function !Ac <A. End If $
+;`[b If ppx = p2x And ppy = p2y Then 7=t4;8|j; point_in = True {%xwoMVc+ Exit Function p q7G[ End If BEyg63= If ppx = p3x And ppy = p3y Then v`MCV29!} point_in = True *D1^Se Exit Function Jz
s.) End If zR(}X8fP 9D:p~_"g aob = ff_angle(p1x, p1y, ppx, ppy, p2x, p2y) 4mJ4) boc = ff_angle(p2x, p2y, ppx, ppy, p3x, p3y) 3(G}IWPq< cod = ff_angle(p3x, p3y, ppx, ppy, p4x, p4y) XKB)++Q= doa = ff_angle(p4x, p4y, ppx, ppy, p1x, p1y) Y~vI@$<~( sum = aob + boc + cod + doa quHq?oXV, If 360.01 > sum And sum > 359.99 Then <\GP\G point_in = True 7y:%^sl Else ~U#afGH$ point_in = False )f9f_^; End If tgH@|Kg End Function
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