safeng1122 |
2013-04-08 13:21 |
'判断点在区域内函数 eX$Biv1N Function point_in(p1x As Single, p1y As Single, p2x As Single, p2y As Single, p3x As Single, p3y As Single, p4x As Single, p4y As Single, ppx As Single, ppy As Single) As Boolean `150$*K&B Dim aob, boc, cod, doa, sum As Single C'$U1%:
j If ppx = p1x And ppy = p1y Then r:o!w7C:a point_in = True [lJ[kr*7 Exit Function EagI)W!s[ End If U--ER
r8 If ppx = p2x And ppy = p2y Then RcE%?2lD point_in = True
)Ob{] Exit Function I'j?T. End If l;C_A;y\ If ppx = p3x And ppy = p3y Then s6
^JgdW point_in = True K4tX4U[Z Exit Function r9U1 O@c End If YJ0[BcZ ls5S9R 5 aob = ff_angle(p1x, p1y, ppx, ppy, p2x, p2y) 8L@di Y boc = ff_angle(p2x, p2y, ppx, ppy, p3x, p3y) *5NffiA}- cod = ff_angle(p3x, p3y, ppx, ppy, p4x, p4y) !`Wu LhB` doa = ff_angle(p4x, p4y, ppx, ppy, p1x, p1y) =os j}( sum = aob + boc + cod + doa 8BN'fWl&E If 360.01 > sum And sum > 359.99 Then AX)zSr Xn point_in = True WZr~Pb9 Else iOyYf!yg point_in = False {xr]xcM'b End If 0Nfj}sXCWE End Function
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