'判断点在区域内函数 lYS "
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 ,<C~DSAyZ
Dim aob, boc, cod, doa, sum As Single Bio QV47B
If ppx = p1x And ppy = p1y Then ~}/_QlX` K
point_in = True Hq ~SRc~
Exit Function N"0>)tG
End If I *f @M}
If ppx = p2x And ppy = p2y Then 1H\5E~X
point_in = True <;@E
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Exit Function cp"{W-Q{$
End If cmYzS6f,7
If ppx = p3x And ppy = p3y Then s0CDp"uJY
point_in = True [,;O$j}
Exit Function Y9
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End If _RS
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aob = ff_angle(p1x, p1y, ppx, ppy, p2x, p2y) \F\xZ.r
boc = ff_angle(p2x, p2y, ppx, ppy, p3x, p3y) ,,1y0s0`
cod = ff_angle(p3x, p3y, ppx, ppy, p4x, p4y) >L8 & 6aU
doa = ff_angle(p4x, p4y, ppx, ppy, p1x, p1y) z_#HJ}R=
sum = aob + boc + cod + doa :o87<)
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If 360.01 > sum And sum > 359.99 Then D51s)?
point_in = True
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Else 6J eAXj1g+
point_in = False ]dV $H
End If I) 9 ,
End Function
