'判断点在区域内函数 O]c=Yyl
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 `Af{H/qiI
Dim aob, boc, cod, doa, sum As Single qXXYF>Z-
If ppx = p1x And ppy = p1y Then D-'i G%)kA
point_in = True N7d17c.
5
Exit Function s@[C&v
End If m\<<oIlH
If ppx = p2x And ppy = p2y Then *rS9eej
point_in = True 8:Z@ lp^
Exit Function ck(CA(_
End If ;n%]*v
If ppx = p3x And ppy = p3y Then qzuQq94k
point_in = True *54>iO-
c
Exit Function F% F
c+?
End If 3$GY,B
*LY~l
aob = ff_angle(p1x, p1y, ppx, ppy, p2x, p2y) aO~si=
boc = ff_angle(p2x, p2y, ppx, ppy, p3x, p3y) 8
m%>:}o
cod = ff_angle(p3x, p3y, ppx, ppy, p4x, p4y) 43vGgGW
doa = ff_angle(p4x, p4y, ppx, ppy, p1x, p1y) Xjs21-t%
sum = aob + boc + cod + doa 3!i.Fmo
If 360.01 > sum And sum > 359.99 Then 0!9?H1>
point_in = True #pS]k<o%1
Else TYs+XJ'Xj
point_in = False Q%M'[L?[
End If P5'iYahCq_
End Function