'判断点在区域内函数 Tg@:mw5
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 8\S$iGd
Dim aob, boc, cod, doa, sum As Single ,UNnz&H+f
If ppx = p1x And ppy = p1y Then zi_0* znw
point_in = True a|-ozBFR
Exit Function O %1uBc
End If `sLD>@m
If ppx = p2x And ppy = p2y Then 7S{yKS
point_in = True 6Qn};tbnD
Exit Function 9>6?tb"f*H
End If uC|bC#;
If ppx = p3x And ppy = p3y Then n
>@Qx$-
point_in = True YJF|J2u
Exit Function a] P0PH~
End If x" P@[T
)@],0yL
aob = ff_angle(p1x, p1y, ppx, ppy, p2x, p2y) XC!Y {lp
boc = ff_angle(p2x, p2y, ppx, ppy, p3x, p3y) he|.Ow
cod = ff_angle(p3x, p3y, ppx, ppy, p4x, p4y) !>?*gc.<
doa = ff_angle(p4x, p4y, ppx, ppy, p1x, p1y) Ce:w^P+
sum = aob + boc + cod + doa r-AD*h@QZ
If 360.01 > sum And sum > 359.99 Then VQI[ J
point_in = True .naSK`J,`
Else O$7r)B6Cs
point_in = False hO2W!68
End If hf :\^w
End Function
