'判断点在区域内函数 ?[n{M
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 %:bTOw[4r
Dim aob, boc, cod, doa, sum As Single J7FCW^-`3
If ppx = p1x And ppy = p1y Then DH(Qmd
point_in = True Tx)X\&ij&
Exit Function Algk4zfK2,
End If =+K2`=y;WF
If ppx = p2x And ppy = p2y Then 1bW[RK;GE
point_in = True g3r4>SA
Exit Function e;1n!_l\
End If %d..L-`]ET
If ppx = p3x And ppy = p3y Then 9>y6zFTV
point_in = True NdpcfZq
Exit Function 5^"T`,${
End If 6\MH2&L<
E'|@hL-jn
aob = ff_angle(p1x, p1y, ppx, ppy, p2x, p2y) ?]i.Zi\[f
boc = ff_angle(p2x, p2y, ppx, ppy, p3x, p3y) JZQT}
cod = ff_angle(p3x, p3y, ppx, ppy, p4x, p4y) E;[ANy4L
doa = ff_angle(p4x, p4y, ppx, ppy, p1x, p1y) W2CCLq1(
sum = aob + boc + cod + doa jfxW9][
If 360.01 > sum And sum > 359.99 Then mTG v*=l
point_in = True Ood8Qty(
Else F$l]#G.@A
point_in = False
de.!~%D
End If K8,fw-S%
End Function