<html xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><meta http-equiv=Content-Type content="text/html; charset=utf-8"><meta name=Generator content="Microsoft Word 15 (filtered medium)"><style><!--
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--></style></head><body lang=EN-US link=blue vlink="#954F72"><div class=WordSection1><p class=MsoNormal>I would still suggest study best practices of best x3d implementations along with interviews and code reviews with folks that have deployed working code. After I study again a bit I think this is not that much of problem and lots has been done in nD+1 and more somehow stitched together to form a very realistic continuous mesh with up to 1 pixel resolution. Like for greatest fun with hanim skin. </p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>What is the possible NURBS related data carried by gltf? Collada? These would be the basics. </p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><a href="http://www.web3d.org/sites/default/files/page/X3D%20Version%204/glTfX3dFeaturesComparison.pdf">http://www.web3d.org/sites/default/files/page/X3D%20Version%204/glTfX3dFeaturesComparison.pdf</a></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Also, the x3d NURBS standard should include all interfaces to build a fine authortime environment that should allow users to compose NURBS elements in the scene interactively in x3d realtime runtime. </p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Thanks for your work in this and all, </p><p class=MsoNormal>Joe</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Sent from <a href="https://go.microsoft.com/fwlink/?LinkId=550986">Mail</a> for Windows 10</p><p class=MsoNormal><o:p> </o:p></p><div style='mso-element:para-border-div;border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal style='border:none;padding:0in'><b>From: </b><a href="mailto:andreasplesch@gmail.com">Andreas Plesch</a><br><b>Sent: </b>Friday, September 7, 2018 7:44 AM<br><b>To: </b><a href="mailto:brutzman@nps.edu">Don Brutzman</a><br><b>Cc: </b><a href="mailto:joedwil@earthlink.net">Joe D Williams</a>; <a href="mailto:x3d-public@web3d.org">X3D Graphics public mailing list</a>; <a href="mailto:x3dom-developers@lists.sourceforge.net">x3dom-developer mlist</a><br><b>Subject: </b>Re: [x3dom-developers] [x3d-public] Nurbs for x3dom</p></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Thanks for the pointer. I took a look but it is unclear if it is</p><p class=MsoNormal>possible to generalize this 2d method by Santina to 3d surface</p><p class=MsoNormal>patches. Also it seems to rely on reducing order to quadratic which</p><p class=MsoNormal>may often not be possible/desirable.</p><p class=MsoNormal>jgeom seems unrelated to GP. It does look like a good method structure</p><p class=MsoNormal>for construction of the various X3D Nurb nodes. Does it attempt to</p><p class=MsoNormal>optimize animation in some way, eg. changes to control points/weights</p><p class=MsoNormal>?</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>On Fri, Sep 7, 2018 at 7:39 AM Don Brutzman <brutzman@nps.edu> wrote:</p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>> On 9/6/2018 12:44 PM, Joseph D Williams wrote:</p><p class=MsoNormal>> > https://www.shadertoy.com/view/XtXfWn</p><p class=MsoNormal>> ></p><p class=MsoNormal>> > NURBS Rendering</p><p class=MsoNormal>> ></p><p class=MsoNormal>> > Thanks,</p><p class=MsoNormal>> ></p><p class=MsoNormal>> > Joe</p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>> described at</p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>> http://jogamp.org/doc/gpunurbs2011/p70-santina.pdf</p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>> about 5-6 years ago, Vince Marchetti and I worked a bit on jgeom library. interesting resource, glad we archived it there so that it wasn't lost.</p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>> https://sourceforge.net/projects/jgeom</p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>> you can find email about those efforts in email archives for "source@web3d.org" mailing list</p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>> all the best, Don</p><p class=MsoNormal>> --</p><p class=MsoNormal>> Don Brutzman Naval Postgraduate School, Code USW/Br brutzman@nps.edu</p><p class=MsoNormal>> Watkins 270, MOVES Institute, Monterey CA 93943-5000 USA +1.831.656.2149</p><p class=MsoNormal>> X3D graphics, virtual worlds, navy robotics http://faculty.nps.edu/brutzman</p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>-- </p><p class=MsoNormal>Andreas Plesch</p><p class=MsoNormal>Waltham, MA 02453</p><p class=MsoNormal><o:p> </o:p></p></div></body></html>