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Dear Marco,<br>
<br>
Could you expand on how you computed the volume from the dxf file?<br>
I would be very interested to perform that for (no so small) mines!<br>
<br>
Thanks<br>
<br>
Xavier<br>
<br>
<br>
<div class="moz-cite-prefix">Le 27/02/2013 11:37, Marco Corvi a
écrit :<br>
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cite="mid:1361961447.38095.YahooMailNeo@web120302.mail.ne1.yahoo.com"
type="cite">
<div style="color:#000; background-color:#fff; font-family:bookman
old style, new york, times, serif;font-size:12pt">hi,<br>
<br>
it just happened that i was asked to estimate the volume of a
"cave"<br>
(actually a small mine).<br>
<br>
therion dxf export is a triangulated surface of the cave wall.<br>
if the surface were oriented<br>
it would be extremely easy to compute the volume.<br>
(the surface of a real cave is always orientable: no klein
cave).<br>
<br>
all recent versions of therion produce nice-looking dxf.<br>
i tried 5.3.5 and the volume seemed reasonable.<br>
then i tried 5.3.11 and i got an unreasonable value (there is
also <br>
a commented option for new 3d, and the result was even more
unreasonable).<br>
<br>
so i checked the dxf files.<br>
it seems that none of them is oriented.<br>
is it possible to make therion produce an oriented surface?<br>
thanks.<br>
<br>
marco<br>
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<br>
<pre class="moz-signature" cols="72">--
> -------------------------
> Xavier Pennec
> Senior Research Scientist / Directeur de recherche
> Asclepios project-team, INRIA Sophia-Antipolis
> 2004 Route des Lucioles, BP93
> F-06902 Sophia-Antipolis Cedex, France
> +33 4 92 38 76 64
> +33 6 78 35 16 90
> <a class="moz-txt-link-freetext" href="http://www-sop.inria.fr/asclepios/">http://www-sop.inria.fr/asclepios/</a>
> -------------------------------
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