'判断点在区域内函数 03X<x|
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 LL|_c4$Ky
Dim aob, boc, cod, doa, sum As Single qWRNHUd
If ppx = p1x And ppy = p1y Then K!IF?iell
point_in = True >$7wA9YhL
Exit Function "wT~$I"
End If Ov$N"
If ppx = p2x And ppy = p2y Then (t]lP/
point_in = True uvu**s
Exit Function ](B&l{V
End If m&Y;/kr
If ppx = p3x And ppy = p3y Then `A4QU,0
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point_in = True #JJp:S~`
Exit Function "/4s8.dw+u
End If !A'`uf4u
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aob = ff_angle(p1x, p1y, ppx, ppy, p2x, p2y) JLy)}8I
boc = ff_angle(p2x, p2y, ppx, ppy, p3x, p3y) "C$!mdr7
cod = ff_angle(p3x, p3y, ppx, ppy, p4x, p4y) 1R5\GKF6o
doa = ff_angle(p4x, p4y, ppx, ppy, p1x, p1y) &+E'1h10
sum = aob + boc + cod + doa GW>7R6i
If 360.01 > sum And sum > 359.99 Then |QAeQWP+1
point_in = True 4
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Else "!%w9
point_in = False veYsctK~
End If }@ O|RkY
End Function