'判断点在区域内函数 (n0h#%
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 ~|5B
Dim aob, boc, cod, doa, sum As Single !au%D?w
If ppx = p1x And ppy = p1y Then X4{O/G
point_in = True ;'~GuZ#I
Exit Function )CM3vL {
End If }Z Nyd
If ppx = p2x And ppy = p2y Then W5_aS2$
point_in = True %kSpMj|
Exit Function GB\1'
End If wseb]=U
If ppx = p3x And ppy = p3y Then a15kFun
point_in = True QssU\@/Q
Exit Function FhVoN}
End If .qGfLvx%
I' TprT
aob = ff_angle(p1x, p1y, ppx, ppy, p2x, p2y) ;N;['xcx;
boc = ff_angle(p2x, p2y, ppx, ppy, p3x, p3y) %MH!L2|
cod = ff_angle(p3x, p3y, ppx, ppy, p4x, p4y) 3yp?|>e
doa = ff_angle(p4x, p4y, ppx, ppy, p1x, p1y) ,ctm;T1H+
sum = aob + boc + cod + doa 5KI lU78
If 360.01 > sum And sum > 359.99 Then j8#xNA
point_in = True ! uX0G4
Else ^DH*\ee
point_in = False ?&rt)/DV,
End If ;2%8tV$V
End Function