'判断点在区域内函数 wcW8"J'AH
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 |'ML
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Dim aob, boc, cod, doa, sum As Single 5N.-m;s
If ppx = p1x And ppy = p1y Then SNl% ?j|
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point_in = True HJ^SqSm
Exit Function Pua|Z
x
End If ]~!?(d!J/
If ppx = p2x And ppy = p2y Then {Z!x]}{M
point_in = True ?=#vp /
Exit Function s.]<r5v7
End If 8DLj?M>N
If ppx = p3x And ppy = p3y Then kACgP!~/1
point_in = True S;L=W9=wby
Exit Function *JT,]7>
End If r=74'g
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aob = ff_angle(p1x, p1y, ppx, ppy, p2x, p2y) ^T&@(|o
boc = ff_angle(p2x, p2y, ppx, ppy, p3x, p3y) hw9qnSeRy
cod = ff_angle(p3x, p3y, ppx, ppy, p4x, p4y) ]q pLaBD
doa = ff_angle(p4x, p4y, ppx, ppy, p1x, p1y) lNRGlTD%
sum = aob + boc + cod + doa 2*)2c[/0F
If 360.01 > sum And sum > 359.99 Then Svqj@@_f
point_in = True YDxEWK<
Else |x#w8=VP-
point_in = False jRGslak;
End If wY'w'%A?
End Function