'判断点在区域内函数 $CM4&{B"i
Function point_in(p1x As Single, p1y As Single, p2x As Single, p2y As Single, p3x As Single, p3y As Single, p4x As Single, p4y As Single, ppx As Single, ppy As Single) As Boolean T6;>O`B.r
Dim aob, boc, cod, doa, sum As Single \3M1.Q4$Gr
If ppx = p1x And ppy = p1y Then
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point_in = True ?f9$OLEB
Exit Function uFWvtL?;_
End If W!y)Ho
If ppx = p2x And ppy = p2y Then wD}EW
point_in = True BJ"Ay@D*
Exit Function VGfD;8]z
End If f7S^yA[[
If ppx = p3x And ppy = p3y Then tG_-;03<`4
point_in = True 3JTU^ -S<
Exit Function S7Qen6lm
End If UUD\bWfn
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aob = ff_angle(p1x, p1y, ppx, ppy, p2x, p2y) 2}59 7Hb
boc = ff_angle(p2x, p2y, ppx, ppy, p3x, p3y)
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cod = ff_angle(p3x, p3y, ppx, ppy, p4x, p4y) o%$<LaQG5
doa = ff_angle(p4x, p4y, ppx, ppy, p1x, p1y) FW/)uf3I
sum = aob + boc + cod + doa |b,zw^!e['
If 360.01 > sum And sum > 359.99 Then MwN1]d|6
point_in = True r,QJG$ Jo
Else py}.00it
point_in = False dy'X<o^?W
End If )Gx":
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End Function