'判断点在区域内函数 p_&B+
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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 "T^%HPif
Dim aob, boc, cod, doa, sum As Single K\;4;6g
If ppx = p1x And ppy = p1y Then Qb>("j~Z
point_in = True w6X:39d
Exit Function YsVKdh
End If XxdD)I
If ppx = p2x And ppy = p2y Then r*$f^T!|
point_in = True % 33O)<?
Exit Function G!I5Er0pdy
End If /j$pV
If ppx = p3x And ppy = p3y Then =P9rOK=
point_in = True ![r)KE=v8I
Exit Function y }R2ZO
End If wXqwb|2
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aob = ff_angle(p1x, p1y, ppx, ppy, p2x, p2y) K39I j_3
boc = ff_angle(p2x, p2y, ppx, ppy, p3x, p3y) Z]TQ+9t
cod = ff_angle(p3x, p3y, ppx, ppy, p4x, p4y) |;)_-=L0P
doa = ff_angle(p4x, p4y, ppx, ppy, p1x, p1y) - ry
sum = aob + boc + cod + doa WTl0}wi
If 360.01 > sum And sum > 359.99 Then fS|e{!iI"
point_in = True e],(d7 Jo
Else MmvOyKNZF
point_in = False W% Lrp{
End If VWK/(>TP
End Function