'判断点在区域内函数 p&_Kb\} U
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 ''s]6Jjw
Dim aob, boc, cod, doa, sum As Single GG/~)^VMe
If ppx = p1x And ppy = p1y Then @G~ T&6E!
point_in = True \\Fl,'
Exit Function l5l: 'EY>
End If (S&X??jfB5
If ppx = p2x And ppy = p2y Then ~^UQw? ;
point_in = True pM HY2t
Exit Function Xv|~1v%s7
End If JLp.bxx
If ppx = p3x And ppy = p3y Then ]<WKi=
point_in = True "|gNNmr
Exit Function .zAB)rNc
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End If .fk!~8b[Q+
3&/5!zOg)
aob = ff_angle(p1x, p1y, ppx, ppy, p2x, p2y) <2HI. @ ^
boc = ff_angle(p2x, p2y, ppx, ppy, p3x, p3y) G sm5L<rx
cod = ff_angle(p3x, p3y, ppx, ppy, p4x, p4y) DO'$J9;*
doa = ff_angle(p4x, p4y, ppx, ppy, p1x, p1y) -^Baxkq(YM
sum = aob + boc + cod + doa LZqx6~]O
If 360.01 > sum And sum > 359.99 Then >t.2!Z_RQ
point_in = True ]/XNfb
Else D[x0sly
point_in = False JVD#wwic
End If & ;ie+/B
End Function
