'判断点在区域内函数 k$_]b0D{4
Function point_in(p1x As Single, p1y As Single, p2x As Single, p2y As Single, p3x As Single, p3y As Single, p4x As Single, p4y As Single, ppx As Single, ppy As Single) As Boolean L5uI31
Dim aob, boc, cod, doa, sum As Single es FL<T
If ppx = p1x And ppy = p1y Then &.4_4"l(
point_in = True Zs|sPatV<
Exit Function ',j-n$Z^=
End If , tj7'c$0
If ppx = p2x And ppy = p2y Then XJ?z{gXJ
point_in = True GZX!iT
Exit Function
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End If kDa#yN\
If ppx = p3x And ppy = p3y Then )II,HT-LY
point_in = True F|Ihq^q
Exit Function deY<+!
End If $*-L8An?
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aob = ff_angle(p1x, p1y, ppx, ppy, p2x, p2y) [E7@W[xr
boc = ff_angle(p2x, p2y, ppx, ppy, p3x, p3y) FRk_xxe"K
cod = ff_angle(p3x, p3y, ppx, ppy, p4x, p4y) I>Yp=R
doa = ff_angle(p4x, p4y, ppx, ppy, p1x, p1y) 97dI4t<
sum = aob + boc + cod + doa += ~}PF
If 360.01 > sum And sum > 359.99 Then 94@!.11
point_in = True Hv*O9!cC
Else >G~;2K[
point_in = False io3'h:+9s
End If +0 |0X {v
End Function