<html xmlns="http://www.w3.org/1999/xhtml" xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office"><head><!--[if gte mso 9]><xml><o:OfficeDocumentSettings><o:AllowPNG/><o:PixelsPerInch>96</o:PixelsPerInch></o:OfficeDocumentSettings></xml><![endif]--></head><body><div style="color:#000; background-color:#fff; font-family:Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:13px"><div id="yui_3_16_0_ym19_1_1500286193640_28052">Hi,</div><div id="yui_3_16_0_ym19_1_1500286193640_29324" dir="ltr">You might like to look at <a href="http://thomson.phy.syr.edu/thomsonapplet.php" class="enhancr2_7cbebf15-9f3f-ebf7-4ddc-a04810e4ebe0" id="yui_3_16_0_ym19_1_1500286193640_29355">Thomson Problem - Points on a Sphere</a> there is the ability to export the nodal positions of the triangles that form the surface which can be converted to gmsh format quite easily,<br></div><div><br></div><div id="enhancr2_7cbebf15-9f3f-ebf7-4ddc-a04810e4ebe0" class="yahoo-link-enhancr-card yahoo-link-enhancr-not-allow-cover ymail-preserve-class ymail-preserve-style" style="max-width:400px;font-family:'Helvetica Neue', Helvetica, Arial, sans-serif;" data-url="http://thomson.phy.syr.edu/thomsonapplet.php" data-type="yenhancr" data-category="article" data-embed-url="" data-size="medium" dir="ltr" contenteditable="false"> <a href="http://thomson.phy.syr.edu/thomsonapplet.php" style="text-decoration:none !important; color: #000 !important" class="yahoo-enhancr-cardlink" target="_blank" rel="noreferrer" id="yui_3_16_0_ym19_1_1500286193640_29740"> <table class="card-wrapper" style="max-width:400px;" id="yui_3_16_0_ym19_1_1500286193640_29739" cellspacing="0" cellpadding="0" border="0"> <tbody id="yui_3_16_0_ym19_1_1500286193640_29738"><tr id="yui_3_16_0_ym19_1_1500286193640_29737"> <td id="yui_3_16_0_ym19_1_1500286193640_29736" width="400"> <table class="card-info" style="background:#fff;max-width:400px;border:1px solid #e0e4e9;border-bottom:3px solid #000000;" id="yui_3_16_0_ym19_1_1500286193640_29735" width="100%" cellspacing="0" cellpadding="0" border="0"> <tbody id="yui_3_16_0_ym19_1_1500286193640_29734"><tr id="yui_3_16_0_ym19_1_1500286193640_29733"> <td style="vertical-align:top;padding:16px 0 16px 12px;"> </td> <td style="vertical-align:middle;padding:16px 12px;width:99%;" id="yui_3_16_0_ym19_1_1500286193640_29732"> <h2 class="card-title" style="margin:0 0 4px 0;font-size:16px;font-family:'Helvetica Neue', Helvetica, Arial, sans-serif;word-break:break-word;">Thomson Problem - Points on a Sphere</h2> <div class="card-description" style="font-size:11px;line-height:15px;color:#999;word-break:break-word;"></div> </td> <td class="card-share-container"></td> </tr> </tbody></table> </td> </tr> </tbody></table> </a></div><div id="yui_3_16_0_ym19_1_1500286193640_29759"><br></div><div id="yui_3_16_0_ym19_1_1500286193640_29821" dir="ltr">HTH regards</div><div dir="ltr" id="yui_3_16_0_ym19_1_1500286193640_29822">Mark<br></div><div id="yui_3_16_0_ym19_1_1500286193640_28003"><span></span></div><div class="qtdSeparateBR" id="yui_3_16_0_ym19_1_1500286193640_28033"><br><br></div><div class="yahoo_quoted" id="yui_3_16_0_ym19_1_1500286193640_28008" style="display: block;"> <div style="font-family: Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 13px;" id="yui_3_16_0_ym19_1_1500286193640_28007"> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;" id="yui_3_16_0_ym19_1_1500286193640_28006"> <div dir="ltr" id="yui_3_16_0_ym19_1_1500286193640_28005"> <font id="yui_3_16_0_ym19_1_1500286193640_28004" size="2" face="Arial"> <hr id="yui_3_16_0_ym19_1_1500286193640_28069" size="1"> <b><span style="font-weight:bold;">From:</span></b> Andy Somogyi <andy.somogyi@gmail.com><br> <b><span style="font-weight: bold;">To:</span></b> gmsh@onelab.info <br> <b id="yui_3_16_0_ym19_1_1500286193640_28010"><span style="font-weight: bold;" id="yui_3_16_0_ym19_1_1500286193640_28009">Sent:</span></b> Monday, July 17, 2017 7:26 AM<br> <b id="yui_3_16_0_ym19_1_1500286193640_28012"><span style="font-weight: bold;" id="yui_3_16_0_ym19_1_1500286193640_28011">Subject:</span></b> [Gmsh] hexagonal surface tiling<br> </font> </div> <div class="y_msg_container" id="yui_3_16_0_ym19_1_1500286193640_28013"><br><div id="yiv0521626590"><div id="yui_3_16_0_ym19_1_1500286193640_28014">Hi All, <div class="yiv0521626590" id="yui_3_16_0_ym19_1_1500286193640_28015"><br class="yiv0521626590"></div><div class="yiv0521626590" id="yui_3_16_0_ym19_1_1500286193640_28028">Would anyone know if it’s possible to generate a hexagonal / pentagonal surface tessellation of a sphere? </div><div class="yiv0521626590" id="yui_3_16_0_ym19_1_1500286193640_29731"><br class="yiv0521626590"></div><div class="yiv0521626590" id="yui_3_16_0_ym19_1_1500286193640_28027">I’d like to be able to generate a sphere, tesselate the surface in hexagons/pentagons, then extrude the surface out in the normal direction to create a mesh of high order prisms. </div><div class="yiv0521626590" id="yui_3_16_0_ym19_1_1500286193640_28070"><br class="yiv0521626590"></div><div class="yiv0521626590" id="yui_3_16_0_ym19_1_1500286193640_28026">Something similar to the attached figure. </div><div class="yiv0521626590" id="yui_3_16_0_ym19_1_1500286193640_28071"><br class="yiv0521626590"></div><div class="yiv0521626590" id="yui_3_16_0_ym19_1_1500286193640_28025">If it’s only possible to tile the surface with quads, how would I go about extruding the 2D surface in the normal direction. </div><div class="yiv0521626590" id="yui_3_16_0_ym19_1_1500286193640_28024"><br class="yiv0521626590"></div><div class="yiv0521626590" id="yui_3_16_0_ym19_1_1500286193640_28016">Thanks </div><div class="yiv0521626590" id="yui_3_16_0_ym19_1_1500286193640_28017"><br class="yiv0521626590"></div><div class="yiv0521626590" id="yui_3_16_0_ym19_1_1500286193640_28074"><div style="margin:0px;line-height:normal;font-family:Helvetica;" class="yiv0521626590" id="yui_3_16_0_ym19_1_1500286193640_28073"><div style="margin:0px;line-height:normal;" class="yiv0521626590" id="yui_3_16_0_ym19_1_1500286193640_28072"><img alt="280px-Comparison_of_truncated_icosahedron_and_soccer_ball.png" id="yiv05216265905941D535-26AB-4F38-80AC-5A92BB4831A2" src="cid:kKDPh05gbaLtp0goRhq5" class="yiv0521626590" data-id="5ebbe805-f3e2-441a-5730-c0606a199435"></div></div></div></div></div>_______________________________________________<br>gmsh mailing list<br><a ymailto="mailto:gmsh@onelab.info" href="mailto:gmsh@onelab.info">gmsh@onelab.info</a><br><a href="http://onelab.info/mailman/listinfo/gmsh" target="_blank">http://onelab.info/mailman/listinfo/gmsh</a><br><br><br></div> </div> </div> </div></div></body></html>