'判断点在区域内函数 86o'3G9@
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 W7IAW7w8U
Dim aob, boc, cod, doa, sum As Single \<b42\a}
If ppx = p1x And ppy = p1y Then YDEb MEMd/
point_in = True t 9_&n.z
Exit Function 14y>~~3C4
End If BkDq9>
If ppx = p2x And ppy = p2y Then K%/g!t)
point_in = True X`I=Z ysB
Exit Function HA0yX?f]
End If AgdU@&^
If ppx = p3x And ppy = p3y Then y<y9'tx
point_in = True Btc[
Exit Function g;y*F;0@
End If M!\6Fl{ b
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aob = ff_angle(p1x, p1y, ppx, ppy, p2x, p2y) QmsS,Zljo
boc = ff_angle(p2x, p2y, ppx, ppy, p3x, p3y) _%aT3C}k
cod = ff_angle(p3x, p3y, ppx, ppy, p4x, p4y) {|Fn<&G
doa = ff_angle(p4x, p4y, ppx, ppy, p1x, p1y) 4{ "
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sum = aob + boc + cod + doa o^ BX:\}
If 360.01 > sum And sum > 359.99 Then PC)V".W 1
point_in = True 3d_g@x#9
Else ab<7jfFIa
point_in = False [wUJ ~~2#
End If eZ(o _
End Function
