'判断点在区域内函数
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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 1!U:M8T|
Dim aob, boc, cod, doa, sum As Single p9 \*n5{
If ppx = p1x And ppy = p1y Then f Y78
point_in = True ;P8% yf
Exit Function `0_
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End If _tje xS'
If ppx = p2x And ppy = p2y Then {(Mmv[y
point_in = True br k*;
Exit Function ,(sE|B#s
End If ",Mrdxn7
If ppx = p3x And ppy = p3y Then G^VOA4
point_in = True <u#
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Exit Function #s>'IPc0
End If #k>A,
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aob = ff_angle(p1x, p1y, ppx, ppy, p2x, p2y) 6r@>n_6LY
boc = ff_angle(p2x, p2y, ppx, ppy, p3x, p3y) NN+;I^NqW&
cod = ff_angle(p3x, p3y, ppx, ppy, p4x, p4y) lMg#zT !?
doa = ff_angle(p4x, p4y, ppx, ppy, p1x, p1y) uz$p' Q
sum = aob + boc + cod + doa NZ!I >
If 360.01 > sum And sum > 359.99 Then w0H#M)c
point_in = True ;GOu'34j
Else @y * TVy
point_in = False L5|g \Y`
End If fshG ~L7S9
End Function
