'判断点在区域内函数 Qci$YTwl>
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 13a(FG
Dim aob, boc, cod, doa, sum As Single VgMP^&/gZ
If ppx = p1x And ppy = p1y Then q{E"pyt36R
point_in = True PrSkHxm
Exit Function 4P%m>[
End If xnbsg!`;7W
If ppx = p2x And ppy = p2y Then @rwU 1T33
point_in = True DjwQ`MA
Exit Function {6O0.}q]&
End If !)c=1EX]"
If ppx = p3x And ppy = p3y Then }lP 5GT2
point_in = True Obo _YE
Exit Function ErDL^M-`
End If XV=S)
O R
#7"
aob = ff_angle(p1x, p1y, ppx, ppy, p2x, p2y) (ua q<Cvg
boc = ff_angle(p2x, p2y, ppx, ppy, p3x, p3y) hH`Jb77L
cod = ff_angle(p3x, p3y, ppx, ppy, p4x, p4y) k|FSz#Y
doa = ff_angle(p4x, p4y, ppx, ppy, p1x, p1y) 62kb2C
sum = aob + boc + cod + doa {155b0
If 360.01 > sum And sum > 359.99 Then eg3L:rk_
point_in = True WeC(w+}p
Else \zu}\{
point_in = False iYKU[UP?
End If p)3nyN=|_
End Function