'判断点在区域内函数 &k-Vcrcz
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 8r"+bhGx~
Dim aob, boc, cod, doa, sum As Single l3Njq^ T
If ppx = p1x And ppy = p1y Then DejA4XdW
point_in = True h$e En l}
Exit Function 8UC xn f#
End If \^I>Q _LU
If ppx = p2x And ppy = p2y Then sGh(#A0Pt
point_in = True 3 rLTF\
Exit Function
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End If Hbv6_ H
If ppx = p3x And ppy = p3y Then 'lHdOG
point_in = True !EUan
Exit Function z [`@}}Q
End If .ERO|$ fv
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aob = ff_angle(p1x, p1y, ppx, ppy, p2x, p2y) bR@p<;G|
boc = ff_angle(p2x, p2y, ppx, ppy, p3x, p3y) ctE\ q
cod = ff_angle(p3x, p3y, ppx, ppy, p4x, p4y) ()&~@ 1U
doa = ff_angle(p4x, p4y, ppx, ppy, p1x, p1y) O G<, - 7
sum = aob + boc + cod + doa @(r /dZc
If 360.01 > sum And sum > 359.99 Then y.KO :P?5{
point_in = True .bBdQpF-
Else @gY)8xMbA
point_in = False PkI :*\ R
End If dy_:-2S
End Function
