'判断点在区域内函数 P#j >hS
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 BN]{o(EB
Dim aob, boc, cod, doa, sum As Single >Hd Pcsl L
If ppx = p1x And ppy = p1y Then AQ<2 "s
point_in = True QKP@+E_U
Exit Function Jf</83RZ
End If %^qf0d*
If ppx = p2x And ppy = p2y Then c{( 4s6D
point_in = True
26[. te9
Exit Function 7eU|iDYo
End If hLo'q^mGr
If ppx = p3x And ppy = p3y Then <jz\U7TBf
point_in = True O!3`^_.
Exit Function .E/NlGm[
End If E|9'{3$
du5| /
aob = ff_angle(p1x, p1y, ppx, ppy, p2x, p2y) . }*_ NU
boc = ff_angle(p2x, p2y, ppx, ppy, p3x, p3y) 4*9WxhJ ]0
cod = ff_angle(p3x, p3y, ppx, ppy, p4x, p4y) < c!I\y
doa = ff_angle(p4x, p4y, ppx, ppy, p1x, p1y) IEj=pI
sum = aob + boc + cod + doa 4xsnN@b
If 360.01 > sum And sum > 359.99 Then yv+DM`0
point_in = True {8im{]8_
Else Gi S{=+=5
point_in = False *Q`y'6S
End If =N?K)QD`
End Function
