'判断点在区域内函数 /prYSRn8
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 C ZJV_0
Dim aob, boc, cod, doa, sum As Single Vo\H<_=G
If ppx = p1x And ppy = p1y Then yYY Nu`
point_in = True m[spn@SF
Exit Function 3+ =I;nj
End If nU2V]-qY
If ppx = p2x And ppy = p2y Then 4J5pXlzV
point_in = True yoQ\lk
Exit Function e`iEy=W
End If pISp*&
If ppx = p3x And ppy = p3y Then ]3ifdGk
point_in = True z\T Lsx
Exit Function &$=! dA
End If 9[VxskEh
x r[Vp
aob = ff_angle(p1x, p1y, ppx, ppy, p2x, p2y) 1oty*c
boc = ff_angle(p2x, p2y, ppx, ppy, p3x, p3y) 5dl,co{q
cod = ff_angle(p3x, p3y, ppx, ppy, p4x, p4y) 4r&f%caU
doa = ff_angle(p4x, p4y, ppx, ppy, p1x, p1y) o5!f#Y
sum = aob + boc + cod + doa 71"+<C .
If 360.01 > sum And sum > 359.99 Then -:<lkq&/
point_in = True <uci9- eC
Else (RE2I
point_in = False iidT~l
End If ;hHi@Z9
End Function