'判断点在区域内函数 "LYob}_z
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 Z,*VRuA
Dim aob, boc, cod, doa, sum As Single 3jeR;N]x
If ppx = p1x And ppy = p1y Then % uKD cj
point_in = True @ :} z\qBM
Exit Function V;$ lgTs|'
End If !T}`h'
If ppx = p2x And ppy = p2y Then m9/a!|fBE
point_in = True q_!3<.sf
Exit Function 4_$f "6
End If 1*Z}M%
If ppx = p3x And ppy = p3y Then QeGU]WU{
point_in = True '?\Hm' 8
Exit Function b+kb7
End If Y #\e~>K
@uc%]V<:k
aob = ff_angle(p1x, p1y, ppx, ppy, p2x, p2y) ^VA)vLj@
boc = ff_angle(p2x, p2y, ppx, ppy, p3x, p3y) 3'8~H]<W
cod = ff_angle(p3x, p3y, ppx, ppy, p4x, p4y) fy-( B;
doa = ff_angle(p4x, p4y, ppx, ppy, p1x, p1y) "YivjHa7H
sum = aob + boc + cod + doa }G]]0Oi2
If 360.01 > sum And sum > 359.99 Then Mf?4 `LM
point_in = True Ou/{PK}
Else b cQ$S;U)
point_in = False BJqM=<nQ
End If [.2>=3T
End Function
