'判断点在区域内函数 u$#Wv2| mk
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 G 2bDf-1ew
Dim aob, boc, cod, doa, sum As Single } je,")#W
If ppx = p1x And ppy = p1y Then Hmt^h(*/2
point_in = True nn/?fIZN4
Exit Function .IBp\7W!?E
End If Y s q'2
If ppx = p2x And ppy = p2y Then `]Fx.)C#
point_in = True EP'h@zdz
Exit Function S{pXs &4O
End If U4f5xUY0)
If ppx = p3x And ppy = p3y Then ZYU=\
point_in = True a7zcIwk
'{
Exit Function !U9|x\BqJ2
End If ,mhQ"\ +C
kft #R#m
aob = ff_angle(p1x, p1y, ppx, ppy, p2x, p2y) @ AHm!9?o
boc = ff_angle(p2x, p2y, ppx, ppy, p3x, p3y) Unj.f>U
cod = ff_angle(p3x, p3y, ppx, ppy, p4x, p4y) c\B|KhDk
doa = ff_angle(p4x, p4y, ppx, ppy, p1x, p1y) f`9
b*wV
sum = aob + boc + cod + doa ]H-S, lmV
If 360.01 > sum And sum > 359.99 Then f=C ,e/sw
point_in = True AjcX N
Else ;<yd^ Xs
point_in = False m8'C_U^89
End If UcBe'r}G
End Function
