Hi David,<br><br>That would work only for straight lines. If you offset an arc for example, you should get a concentric arc with larger radius. In the general case the translation of each point has to be normal to the curve at that point. So I do not think this can be done with translation.<br>
<br>Cheers,<br>Atanas<br><br><br><div><span class="gmail_quote">2008/4/23, David Colignon <<a href="mailto:David.Colignon@ulg.ac.be">David.Colignon@ulg.ac.be</a>>:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
Hi,<br>
<br>
for question 1, Duplicata and Translate are probably what you need:<br>
<br>
<a href="http://geuz.org/gmsh/doc/texinfo/gmsh-full.html#SEC29" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">http://geuz.org/gmsh/doc/texinfo/gmsh-full.html#SEC29</a><br>
<br>
Cheers,<br>
<br>
Dave<br>
<br>
-- <br>
David Colignon, Ph.D.<br>
Collaborateur Logistique F.R.S.-FNRS (Equipements de Calcul Intensif)<br>
ACE - Applied & Computational Electromagnetics<br>
Institut Montefiore B28<br>
Université de Liège<br>
4000 Liège - BELGIQUE<br>
Tél: +32 (0)4 366 37 32<br>
Fax: +32 (0)4 366 29 10<br>
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<br>
<br>
<br>
Atanas Pavlov wrote:<br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;"><span class="q">
Yes, I had not understand the concept of Transfinite grids, it is exactly what I need. Thank you very much.<br>
I have a few other questions, if someone happens to have an answer to them :)<br>
<br>
1) I have not been able to find an Offset command in Gmsh (generate curve which is offset from another curve by a given distance). Any suggestions?<br>
<br>
2) I am considering integrating Gmsh in a simple application, which generates a certain geometrical configuration and meshes it. I have not been able to find any example how to do that, my attempts to compile anything against libGmsh.a (generated by make install-lib) have been fruitless ( I cannot check the archive content with nm either, it seems to be archive made of other archives and I do not know how to compile against it). When I try to compile anything also against the full set of libraries created in the lib build directory, I get a lot of error messages about unresolved references. Is there any example anywhere, which shows how to use Gmsh API to create and mesh geometries?<br>
<br>
Thanks a lot,<br>
Atanas<br>
<br></span>
2008/4/21 Christophe Geuzaine <<a href="mailto:cgeuzaine@ulg.ac.be" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">cgeuzaine@ulg.ac.be</a> <mailto:<a href="mailto:cgeuzaine@ulg.ac.be" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">cgeuzaine@ulg.ac.be</a>>>:<div>
<span class="e" id="q_1197a014b91eb8ee_3"><br>
<br>
Atanas Pavlov wrote:<br>
<br>
Hello,<br>
<br>
I am trying to create a mesh for an axisymmetric geometry, which<br>
is relatively simple, defined by a few points, resp curves<br>
connecting them. I would like, however, to perform mapped<br>
meshing where I partition the curves, then use these partitions<br>
on 4-side surface regions to partition the regions, and then<br>
revolve-extrude the mesh around the symmetry axis. As far as I<br>
can see, the first step is currently not possible in GMSH,<br>
because for surface mesh it can only generate triangle mesh (or<br>
extrude 1D mesh, which however is not possible in this case). Is<br>
there any workaround? Is mapped meshing planned to be<br>
implemented in GMSH, and for simple cases like that, can it be a<br>
short term feasible task?<br>
<br>
<br>
Could you use a Transfinite grid like this?<br>
<br>
Point(1) = {0,0,0,0.1};<br>
Point(2) = {1,0,0,0.1};<br>
Point(3) = {0,1,0,0.1};<br>
Point(4) = {3,0,0,0.1};<br>
Point(5) = {3,3,0,0.1};<br>
Point(6) = {0,3,0,0.1};<br>
Line(1) = {3,6};<br>
Line(2) = {6,5};<br>
Line(3) = {5,4};<br>
Line(4) = {4,2};<br>
Circle(5) = {2,1,3};<br>
Line Loop(6) = {3,4,5,1,2};<br>
Plane Surface(7) = {6};<br>
Transfinite Line {1} = 20 Using Progression 1.2;<br>
Transfinite Line {4} = 20 Using Progression 1./1.2;<br>
Transfinite Line {3,2} = 10 Using Progression 1;<br>
Transfinite Line {5} = 19 Using Progression 1;<br>
Transfinite Surface {7} = {3,6,4,2} Alternated;<br>
Recombine Surface {7};<br>
<br>
<br>
<br>
Cheers,<br>
Atanas<br>
<br>
<br>
<br>
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<br>
-- Prof. Christophe Geuzaine<br>
University of Liege, Electrical Engineering and Computer Science<br>
<a href="http://www.montefiore.ulg.ac.be/%7Egeuzaine" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">http://www.montefiore.ulg.ac.be/~geuzaine</a><br></span>
<<a href="http://www.montefiore.ulg.ac.be/%7Egeuzaine" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">http://www.montefiore.ulg.ac.be/%7Egeuzaine</a>><span class="q"><br>
<br>
<br>
<br>
<br>
-- <br>
Atanas Pavlov<br>
Luitfriedstr. 18, München 80995<br>
<br>
<br></span><span class="q">
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</span></blockquote>
</blockquote></div><br><br clear="all"><br>-- <br>Atanas Pavlov<br>Luitfriedstr. 18, München 80995