'判断点在区域内函数 uH.1'bR?a
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 T=W;k<P\k
Dim aob, boc, cod, doa, sum As Single rm5@dM @
If ppx = p1x And ppy = p1y Then 0e,U&B<W
point_in = True HB0DG<c-
Exit Function Cx[Cst `
End If V/dL-;W;
If ppx = p2x And ppy = p2y Then N~)RR {$w
point_in = True *U}cj A:ZN
Exit Function . l>.
End If &e%eIz
If ppx = p3x And ppy = p3y Then t3VZjO
point_in = True
25H=RTw
Exit Function zu! #
End If K @h9 4Ni6
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aob = ff_angle(p1x, p1y, ppx, ppy, p2x, p2y) G^W'mV$xl
boc = ff_angle(p2x, p2y, ppx, ppy, p3x, p3y) PHh4ZFl]_I
cod = ff_angle(p3x, p3y, ppx, ppy, p4x, p4y) PFSh_9. q
doa = ff_angle(p4x, p4y, ppx, ppy, p1x, p1y) dm~Uj
sum = aob + boc + cod + doa
$*S&i(z
If 360.01 > sum And sum > 359.99 Then Ja [7/
point_in = True }xb?C""q^q
Else IA3m.Vxj ^
point_in = False zEMZz$Y
End If x
T{ s%wE
End Function
