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Hi all,<br>
can I convert a sgm file (generated from sgems software,
<a class="moz-txt-link-freetext" href="http://sgems.sourceforge.net/">http://sgems.sourceforge.net/</a>) in vtk file? how?<br>
Thank you<br>
<br>
Luca<br>
<br>
Il 20/07/2011 10.48, Stephane PLOIX ha scritto:
<blockquote
cite="mid:OFE64C7760.C6D1DD21-ONC12578D3.002E3BCD-C12578D3.002FC652@notes.edfgdf.fr"
type="cite">
<br>
<font face="sans-serif" size="2">Hi,</font>
<br>
<br>
<font face="sans-serif" size="2">You could use the
vtkMultiBlockDataSet
structure with one block per object (look at the </font><font
size="3">vtkMultiBlockMergeFilter
</font><font face="sans-serif" size="2">to merge your objects into
one vtkMultiBlockDataSet
). </font>
<br>
<font face="sans-serif" size="2">You will then have only one actor
per
vtkMultiBlockDataSet, which can speed up your rendering. </font>
<br>
<font face="sans-serif" size="2">You can still individually select
one
block from a multiblock.<br>
</font>
<br>
<font face="sans-serif" size="2">Stephane<br>
<br>
</font>
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<td rowspan="2"><font face="sans-serif" size="2"> </font><img
src="cid:part1.01050105.04000000@planetek.it"><font
face="sans-serif" size="2">
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</td>
<td><font face="sans-serif" size="1"> </font>
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<td><font color="#ff8100" face="Arial" size="1"><b>Stephane
PLOIX</b></font><font color="#ff8100" face="Arial"
size="1"><b><br>
Pilote Opérationnel - Visualisation scientifique</b></font><font
color="#0062e1" face="Arial" size="1"><br>
EDF - R&D<br>
SINETICS<br>
1, Av du Général de Gaulle<br>
92140 Clamart</font><font color="#0062e1"
face="sans-serif" size="1"><br>
</font>
<br>
<font color="#0062e1" face="Arial" size="1"><b><a class="moz-txt-link-abbreviated" href="mailto:stephane.ploix@edf.fr">stephane.ploix@edf.fr</a></b></font>
<br>
<font color="#0062e1" face="Arial" size="1">Tél. : +33 (0)
1 47 65 51
10</font>
</td>
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<td valign="top"><font face="sans-serif" size="2"> </font><img
src="cid:part2.03050604.01050701@planetek.it"><font
face="sans-serif" size="2">
</font>
</td>
<td><font color="#0062e1" face="Arial" size="1">Un geste
simple pour l'environnement,
n'imprimez ce message que si vous en avez l'utilité.</font></td>
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<br>
<br>
<br>
<br>
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<td width="40%"><font face="sans-serif" size="1"><b><a class="moz-txt-link-abbreviated" href="mailto:tmacedo29@gmail.com">tmacedo29@gmail.com</a></b>
</font>
<br>
<font face="sans-serif" size="1">Envoyé par :
<a class="moz-txt-link-abbreviated" href="mailto:vtkusers-bounces@vtk.org">vtkusers-bounces@vtk.org</a></font>
<p><font face="sans-serif" size="1">19/07/2011 21:10</font>
</p>
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<div align="right"><font face="sans-serif"
size="1">A</font></div>
</td>
<td><font face="sans-serif" size="1"><a class="moz-txt-link-abbreviated" href="mailto:daviddoria@gmail.com">daviddoria@gmail.com</a></font>
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<div align="right"><font face="sans-serif"
size="1">cc</font></div>
</td>
<td><font face="sans-serif" size="1"><a class="moz-txt-link-abbreviated" href="mailto:vtkusers@vtk.org">vtkusers@vtk.org</a></font>
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<td>
<div align="right"><font face="sans-serif"
size="1">Objet</font></div>
</td>
<td><font face="sans-serif" size="1">Re: [vtkusers]
Fwd: VTK is completely
Slow</font></td>
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<br>
</td>
<td><br>
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<br>
<tt><font size="2">Hi David,<br>
<br>
Would it make impossible to select each 3D entity? I mean, now
I'm<br>
able to select a cylinder and not all the objects.<br>
Using just one mapper/actor will I be able to keep this
selection?<br>
<br>
Regards<br>
<br>
On Tue, Jul 19, 2011 at 3:18 PM, David Doria
<a class="moz-txt-link-rfc2396E" href="mailto:daviddoria@gmail.com"><daviddoria@gmail.com></a>
wrote:<br>
> On Tue, Jul 19, 2011 at 2:15 PM, Thiago Macedo
<a class="moz-txt-link-rfc2396E" href="mailto:tmacedo29@gmail.com"><tmacedo29@gmail.com></a>
wrote:<br>
>> Hi,<br>
>><br>
>> I'm developing a CAD based software. At some point,
the<br>
>> app converts the 2D drawing into a 3D huge scene.<br>
>> The main problem is: It's very slow!<br>
>> I'm not using any complex algorithm neither complex
structure.
The<br>
>> 'translation' between 2D and 3D is very fast, and
creates basic<br>
>> geometries. E.g..:<br>
>> A hydraulic tube is converted into a cylinder
(vtkCylinderSource),
the<br>
>> connection between 2 hydraulic tubes is a sphere
(vtkSphereSource);<br>
>> A 2D line is converted into a 3D line (vtkLine)<br>
>> All of 3D entities has a mapper and an actor.<br>
>> I'm working with a lot of (closer than million) 2D
entities, and
the<br>
>> 3D scene is totally slow.<br>
>> I've tried to use all tips wrote in the wiki (<br>
>> <a class="moz-txt-link-freetext" href="http://www.vtk.org/Wiki/VTK/FAQ">http://www.vtk.org/Wiki/VTK/FAQ</a> - How to handle large
data sets
in VTK<br>
>> ) and I have just a little improvement.<br>
>> I searched into the books (v5) and was not able to
find anything
to<br>
>> help me. I think it should be faster if I use simple
structures
like<br>
>> cylinders and lines like I'm doing.<br>
>> Is there a way to make it faster?<br>
>><br>
>> Thank you in Advance<br>
>> Best Regards<br>
>><br>
>> --<br>
>> Thiago B. Macedo<br>
><br>
> "All of 3D entities has a mapper and an actor."<br>
><br>
> I think that may be your problem. I would try useing the
AppendFilter<br>
>
(<a class="moz-txt-link-freetext" href="http://www.vtk.org/Wiki/VTK/Examples/Cxx/Filters/AppendFilter">http://www.vtk.org/Wiki/VTK/Examples/Cxx/Filters/AppendFilter</a>)
to<br>
> create a single data set that you can create a single
mapper/actor<br>
> from.<br>
><br>
> See if that help and let us know.<br>
><br>
> David<br>
><br>
<br>
<br>
<br>
-- <br>
Thiago B. Macedo<br>
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