'判断点在区域内函数 Kv(2x3("
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 [`pp[J-~7
Dim aob, boc, cod, doa, sum As Single SR)jJ =R3
If ppx = p1x And ppy = p1y Then ou8V7
point_in = True <&JK5$l<X
Exit Function %S*<2F9
End If -;]m4R)z
If ppx = p2x And ppy = p2y Then [ye!3h&]
point_in = True khFr%u ?S
Exit Function *Rm"3S
End If _v=S4A#tF
If ppx = p3x And ppy = p3y Then / bm2v;
point_in = True 9O(vh(C
Exit Function 4-j3&(
End If _yx~t
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aob = ff_angle(p1x, p1y, ppx, ppy, p2x, p2y) V9KI?}q:W
boc = ff_angle(p2x, p2y, ppx, ppy, p3x, p3y) :c75*h`
cod = ff_angle(p3x, p3y, ppx, ppy, p4x, p4y) mQL8ec_c
doa = ff_angle(p4x, p4y, ppx, ppy, p1x, p1y) S7oPdzcU-
sum = aob + boc + cod + doa _{Z!$q6,
If 360.01 > sum And sum > 359.99 Then Y=G9|7 *lO
point_in = True \e)>]C}h
Else 1f }YKT
point_in = False @6["A'h
End If >qE f991SZ
End Function
