'判断点在区域内函数 ]r^/: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 "x+o(jOy
Dim aob, boc, cod, doa, sum As Single /{[Y l[{"<
If ppx = p1x And ppy = p1y Then r}-si^fo;
point_in = True X#|B*t34
Exit Function 8,0WHivg
End If Cw*:`
If ppx = p2x And ppy = p2y Then hLqRF4>L
point_in = True T ke3X\|
Exit Function G<2OL#Y-
End If f6I$d<
If ppx = p3x And ppy = p3y Then [dQL6k";b
point_in = True &^v5 x"
Exit Function 1kd\Fq^z$
End If ]d4`PXI
y*BS
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aob = ff_angle(p1x, p1y, ppx, ppy, p2x, p2y) [eb?Fd~WB]
boc = ff_angle(p2x, p2y, ppx, ppy, p3x, p3y) y&- 1SP<
cod = ff_angle(p3x, p3y, ppx, ppy, p4x, p4y) W7F1o[
doa = ff_angle(p4x, p4y, ppx, ppy, p1x, p1y) hnk,U:7}
sum = aob + boc + cod + doa 4P406,T]r
If 360.01 > sum And sum > 359.99 Then ,m`>
point_in = True )}/ ycTs
Else wb#ZRmx}
point_in = False AqdQi Z^9
End If ,R-T( <r
End Function
