<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div><br></div><div><br>On 29 Aug 2016, at 22:33, Michael Hiller <<a href="mailto:postanmichel@yahoo.com">postanmichel@yahoo.com</a>> wrote:<br><br></div><blockquote type="cite"><div><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px"><div id="yui_3_16_0_ym19_1_1472502500391_2903"></div><div id="yui_3_16_0_ym19_1_1472502500391_3448">Hello Christophe,</div>
<div id="yui_3_16_0_ym19_1_1472502500391_3449">did you ever get an answer to following archived email?</div><div id="yui_3_16_0_ym19_1_1472502500391_3471"><br></div>
<div id="yui_3_16_0_ym19_1_1472502500391_3450"><a id="yui_3_16_0_ym19_1_1472502500391_3451" href="http://onelab.info/pipermail/gmsh/2013/007826.html">http://onelab.info/pipermail/gmsh/2013/007826.html<br></a></div><div id="yui_3_16_0_ym19_1_1472502500391_3472"><a id="yui_3_16_0_ym19_1_1472502500391_3451" href="http://onelab.info/pipermail/gmsh/2013/007826.html"><br id="yui_3_16_0_ym19_1_1472502500391_3452"></a></div></div></div></blockquote><div><br></div><div>No...</div><br><blockquote type="cite"><div><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px"><div id="yui_3_16_0_ym19_1_1472502500391_3472"><a id="yui_3_16_0_ym19_1_1472502500391_3451" href="http://onelab.info/pipermail/gmsh/2013/007826.html">
</a></div>
I am not a coding expert but I found following description on the
occ-site which seems to be exactly what me and the Matthias were
looking for:<br id="yui_3_16_0_ym19_1_1472502500391_3453">
<br id="yui_3_16_0_ym19_1_1472502500391_3454">
<a id="yui_3_16_0_ym19_1_1472502500391_3455" href="https://www.opencascade.com/doc/occt-6.7.0/overview/html/user_guides__step.html#occt_step_7_1_1">https://www.opencascade.com/doc/occt-6.7.0/overview/html/user_guides__step.html#occt_step_7_1_1</a><br id="yui_3_16_0_ym19_1_1472502500391_3456"></div></div></blockquote><div><br></div><div>Isn't this describing another file format (XDE) ?</div><div><br></div><div>If you find some examples showing code to extract useful coloring/grouping info from step or brep files don't hesitate to post them: it's still something we would like to explore (eg to define physical groups automatically)</div><div><br></div><br><blockquote type="cite"><div><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px">
<br id="yui_3_16_0_ym19_1_1472502500391_3457">
It would be great if you could implement color and name STEP import.<br id="yui_3_16_0_ym19_1_1472502500391_3458">
<br id="yui_3_16_0_ym19_1_1472502500391_3459">
There seems to be the possibility for layer import as well which
would be a nice extra:<a id="yui_3_16_0_ym19_1_1472502500391_3460" href="https://www.opencascade.com/doc/occt-6.9.1/refman/html/class_s_t_e_p_c_a_f_control___reader.html#afa81144a8d9116e1ffa0af30a70f928e"><br id="yui_3_16_0_ym19_1_1472502500391_3461">
https://www.opencascade.com/doc/occt-6.9.1/refman/html/class_s_t_e_p_c_a_f_control___reader.html#afa81144a8d9116e1ffa0af30a70f928e</a><br id="yui_3_16_0_ym19_1_1472502500391_3462">
<br id="yui_3_16_0_ym19_1_1472502500391_3463">
Let me know if I can check or provide more information.<br id="yui_3_16_0_ym19_1_1472502500391_3464">
<br id="yui_3_16_0_ym19_1_1472502500391_3465">
Thank you and best regards<br id="yui_3_16_0_ym19_1_1472502500391_3466">
Michael<div id="yui_3_16_0_ym19_1_1472502500391_3020" class="qtdSeparateBR"><br><br></div><div style="display: block;" id="yui_3_16_0_ym19_1_1472502500391_3017" class="yahoo_quoted"> <div id="yui_3_16_0_ym19_1_1472502500391_3016" style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;"> <div id="yui_3_16_0_ym19_1_1472502500391_3015" style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;"> <div id="yui_3_16_0_ym19_1_1472502500391_3014" dir="ltr"> <font id="yui_3_16_0_ym19_1_1472502500391_3019" size="2" face="Arial"> <hr id="yui_3_16_0_ym19_1_1472502500391_3018" size="1"> <b><span style="font-weight:bold;">From:</span></b> Michael Hiller <<a href="mailto:postanmichel@yahoo.com">postanmichel@yahoo.com</a>><br> <b><span style="font-weight: bold;">To:</span></b> "<a href="mailto:gmsh@geuz.org">gmsh@geuz.org</a>" <<a href="mailto:gmsh@geuz.org">gmsh@geuz.org</a>> <br> <b><span style="font-weight: bold;">Sent:</span></b> Thursday, August 25, 2016 12:55 PM<br> <b><span style="font-weight: bold;">Subject:</span></b> STEP import // tangent surface selection<br> </font> </div> <div id="yui_3_16_0_ym19_1_1472502500391_3377" class="y_msg_container"><br><div id="yiv1147198876"><div id="yui_3_16_0_ym19_1_1472502500391_3376"><div id="yui_3_16_0_ym19_1_1472502500391_3375" style="color:#000;background-color:#fff;font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px;"><div dir="ltr" id="yiv1147198876yui_3_16_0_1_1472122474905_2487">Dear Gmsh developers, dear users,<br id="yiv1147198876yui_3_16_0_1_1472122474905_2558"><br id="yiv1147198876yui_3_16_0_1_1472122474905_2559">first of all I want to thank you for fixing the higher order compound feature – it works like charm now!<br id="yiv1147198876yui_3_16_0_1_1472122474905_2560"><br id="yiv1147198876yui_3_16_0_1_1472122474905_2561">I am trying to find a solution how to easily define "Compound Surfaces" now. I have a solid STEP model with almost 1500 surface patches. In the end I want all patches that share a tangent edge to be meshed together as a single compound mesh.<br id="yiv1147198876yui_3_16_0_1_1472122474905_2562"><br id="yiv1147198876yui_3_16_0_1_1472122474905_2563">At the moment I have to manually select the patches. It helps to hide by group selection with pressing STRG and drawing a rectangular box in the GUI. But still this is cumbersome for the complete part.<br id="yiv1147198876yui_3_16_0_1_1472122474905_2564"><br id="yiv1147198876yui_3_16_0_1_1472122474905_2565">So I was thinking maybe there is something like "Reclassify 2D" for STEP files which I couldn’t find.<br id="yiv1147198876yui_3_16_0_1_1472122474905_2566"><br id="yiv1147198876yui_3_16_0_1_1472122474905_2567">Unfortunately I also cannot use some helpful STEP options like exporting feature names or surface colors. With the first option I could do the compound definitions inside CAD. This would generally be a neat feature: you could parametrically define interfaces inside CAD and use them in GMSH for physical entities. I think that the OCC kernel provides option.<br id="yiv1147198876yui_3_16_0_1_1472122474905_2568"><br id="yiv1147198876yui_3_16_0_1_1472122474905_2569">Also I don't see an obvious way how to change the surface IDs stored inside the STEP file. This could help by writing a little python script to group surfaces by ordering them inside the step file.<br id="yiv1147198876yui_3_16_0_1_1472122474905_2570"><br id="yiv1147198876yui_3_16_0_1_1472122474905_2571">I would be very happy if anyone could provide some further ideas on how to approach this more conveniently.<br id="yiv1147198876yui_3_16_0_1_1472122474905_2572"><br id="yiv1147198876yui_3_16_0_1_1472122474905_2573">Thank you and best regards<br id="yiv1147198876yui_3_16_0_1_1472122474905_2574">Michael<br id="yiv1147198876yui_3_16_0_1_1472122474905_2575"><br></div></div></div></div><br><br></div> </div> </div> </div></div></div></blockquote></body></html>