hidden3d plot in current cvs source

[Tatsuro M. <tma...@ya...>]

Hello

I have noticed that recent snapshot 3d graph using hidden3d looks different from that made by previous
 version.  Some tics seems to fail to be hidden.  I do not know the exact date this phenomenon has
been appear.  I think that the snapshot made by older version seem to be correct.

I have confirmed X11, wxt and windows terminals.

http://www.geocities.jp/tmgpltwin/Files/Files.html#0050

0050 111023hidden_1.png, 25,253 bytes, 2011-01-23, example snapshot of hidden 3d produced gnuplot 4.5
(ChangeLog Date 2011-01-20)
0051 111023hidden_2.png, 18,552 bytes, 2011-01-23, example snapshot of hidden 3d produced gnuplot
4.4.0

Regards

Tatsuro

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