<div><div dir="ltr">I have to talk to someone about fluid dynamics first, I think. I have civil and aeronautical engineers in my family.<div><br></div><div>How can one have a collector without an emitter?</div><div dir="auto"><br></div><div dir="auto">Speaking of collectors, does spatial audio have something like a sink that could be extended? Or is there lighting where some textures absorb light (radiosity?). I’d prefer one way to do things in this case.</div><div dir="auto"><br></div><div dir="auto">My ideas generally go through a painful birthing process. Maybe I could show how a transistor works with emitter, base, and collector? Perhaps it would be useful to show a hohlraum as collecting X-rays until the target starts burning on its own? There are also sinks like CCDs and film.</div><div dir="auto"><br></div><div dir="auto">I think I should brainstorm all the kinds of collectors among the animal kingdom?</div><div dir="auto"><br></div><div dir="auto">Do we also consider transmission media?</div></div></div><div dir="auto"><br></div><div dir="auto">I have totally switched over to collector from emitter.</div><div dir="auto"><br></div><div dir="auto">Perhaps some collectors create abstract syntax trees?</div><div dir="auto"><br></div><div dir="auto">I believe it would be appropriate to start collecting fields which describe collector nodes.</div><div dir="auto"><br></div><div dir="auto">Well there might be a fruit basket with an HAnimHumanoid. The fruit basket might hold.</div><div dir="auto"><br></div><div dir="auto">Volume capacity in number of particles. I’m not sure how to spell pecks.</div><div dir="auto"><br></div><div dir="auto">Weight capacity. Resistance against gravity</div><div dir="auto"><br></div><div dir="auto">Vacuum pressure in a dimension.</div><div dir="auto"><br></div><div dir="auto">Air pressure might also allow us to model weather. My roommate from college was a metrologist. Potentially low pressure points in the atmosphere could be a node or two. I am not sure if this has already been modeled with wind.</div><div dir="auto"><br></div><div dir="auto">John<br><div class="gmail_quote" dir="auto"><div dir="ltr" class="gmail_attr">On Sun, Feb 13, 2022 at 12:44 AM Brutzman, Donald (Don) (CIV) <<a href="mailto:brutzman@nps.edu" target="_blank">brutzman@nps.edu</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;padding-left:1ex;border-left-color:rgb(204,204,204)"><div lang="EN-US"><div><p class="MsoNormal">John, one of the most effective and succinct ways to express new capabilities is to propose specification changes. Illustrating them with use-case examples usually centers everyone immediately on the potential value that might be achieved.<u></u><u></u></p><p class="MsoNormal"><u></u> <u></u></p><p class="MsoNormal">We are currently in editorial mode. Nevertheless all proposals for functional improvements are welcome. They can be<u></u><u></u></p><ul style="margin-top:0in" type="disc"><li style="margin-left:0in">Recorded in Mantis as ongoing X3D4 and 4.1 issues,<u></u><u></u></li><li style="margin-left:0in">Implemented in X3D players,<u></u><u></u></li><li style="margin-left:0in">Tested by authors and users.<u></u><u></u></li></ul><p class="MsoNormal"><u></u> <u></u></p><p class="MsoNormal">Oftentimes X3D prototypes (perhaps with embedded scripts) can immediately demonstrate implementations of new functionality.<u></u><u></u></p><p class="MsoNormal"><u></u> <u></u></p><p class="MsoNormal">This is how we have always progressed, ever since VRML 1.0 and VRML 97, for many successful years.<u></u><u></u></p><p class="MsoNormal"><u></u> <u></u></p><p class="MsoNormal">Thanks for your thoughtful proposals and many efforts.<u></u><u></u></p><div><p class="MsoNormal"><span style="font-size:10pt;font-family:"Courier New""><u style="font-family:"Courier New""></u> <u style="font-family:"Courier New""></u></span></p><p class="MsoNormal"><span style="font-size:10pt;font-family:"Courier New"">all the best, Don<u style="font-family:"Courier New""></u><u style="font-family:"Courier New""></u></span></p><p class="MsoNormal"><span style="font-size:10pt;font-family:"Courier New"">-- <u style="font-family:"Courier New""></u><u style="font-family:"Courier New""></u></span></p><p class="MsoNormal"><span style="font-size:10pt;font-family:"Courier New"">Don Brutzman Naval Postgraduate School, Code USW/Br <a href="mailto:brutzman@nps.edu" target="_blank" style="font-family:"Courier New"">brutzman@nps.edu</a><u style="font-family:"Courier New""></u><u style="font-family:"Courier New""></u></span></p><p class="MsoNormal"><span style="font-size:10pt;font-family:"Courier New"">Watkins 270, MOVES Institute, Monterey CA 93943-5000 USA +1.831.656.2149<u style="font-family:"Courier New""></u><u style="font-family:"Courier New""></u></span></p><p class="MsoNormal"><span style="font-size:10pt;font-family:"Courier New"">X3D graphics, virtual worlds, Navy robotics https://</span> <span style="font-size:10pt;font-family:"Courier New""><a href="http://faculty.nps.edu/brutzman" target="_blank" style="font-family:"Courier New"">faculty.nps.edu/brutzman</a><u style="font-family:"Courier New""></u><u style="font-family:"Courier New""></u></span></p></div><p class="MsoNormal"><u></u> <u></u></p><div><div style="border-style:solid none none;border-top-width:1pt;padding:3pt 0in 0in;border-top-color:rgb(225,225,225)"><p class="MsoNormal"><b>From:</b> John Carlson <<a href="mailto:yottzumm@gmail.com" target="_blank">yottzumm@gmail.com</a>> <br><b>Sent:</b> Saturday, February 12, 2022 8:22 AM<br><b>To:</b> Joseph D Williams <<a href="mailto:joedwil@earthlink.net" target="_blank">joedwil@earthlink.net</a>><br><b>Cc:</b> Brutzman, Donald (Don) (CIV) <<a href="mailto:brutzman@nps.edu" target="_blank">brutzman@nps.edu</a>>; X3D Public Mailing List (<a href="mailto:x3d-public@web3d.org" target="_blank">x3d-public@web3d.org</a>) <<a href="mailto:x3d-public@web3d.org" target="_blank">x3d-public@web3d.org</a>><br><b>Subject:</b> Re: [x3d-public] X3D minutes 11 FEB 2022: ,X3D4 Particle Systems component review,adding enabled field to X3DParticleEmitterNode ?<u></u><u></u></p></div></div><p class="MsoNormal"><u></u> <u></u></p><div><div><div><p class="MsoNormal"><a href="https://nam10.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.powerthesaurus.org%2Femitter%2Fantonyms&data=04%7C01%7Cbrutzman%40nps.edu%7C08272a39e0f44db1ddad08d9ee43cfc9%7C6d936231a51740ea9199f7578963378e%7C0%7C0%7C637802841598775553%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=EGUFyY1Eojf3ZYD5fTZb4o15o8eQtOGN8PC41skUkhs%3D&reserved=0" target="_blank">https://www.powerthesaurus.org/emitter/antonyms</a><u></u><u></u></p></div><p class="MsoNormal"><u></u> <u></u></p></div><div><p class="MsoNormal">Offers “absorber” and none of my selections.<u></u><u></u></p></div><div><p class="MsoNormal"><u></u> <u></u></p><div><div><p class="MsoNormal">On Sat, Feb 12, 2022 at 9:22 AM John Carlson <<a href="mailto:yottzumm@gmail.com" target="_blank">yottzumm@gmail.com</a>> wrote:<u></u><u></u></p></div><blockquote style="border-style:none none none solid;border-left-width:1pt;padding:0in 0in 0in 6pt;margin-left:4.8pt;margin-right:0in;border-left-color:rgb(204,204,204)"><div><p class="MsoNormal">Black hole, drain, vacuum, inhaler, eraser, destroyParticles?<u></u><u></u></p></div><div><p class="MsoNormal"><u></u> <u></u></p></div><div><p class="MsoNormal">Any more ideas. I guess we’ve nixed negative speed as a bad idea.<u></u><u></u></p></div><div><p class="MsoNormal"><u></u> <u></u></p><div><div><p class="MsoNormal">On Sat, Feb 12, 2022 at 2:07 AM Joseph D Williams <<a href="mailto:joedwil@earthlink.net" target="_blank">joedwil@earthlink.net</a>> wrote:<u></u><u></u></p></div><blockquote style="border-style:none none none solid;border-left-width:1pt;padding:0in 0in 0in 6pt;margin-left:4.8pt;margin-right:0in;border-left-color:rgb(204,204,204)"><div><div><ul type="disc"><li class="MsoNormal">So maybe something that goes -1 (backwards),<u></u><u></u></li></ul><p class="MsoNormal"> <u></u><u></u></p><p class="MsoNormal">Something, but not this thing or else needs to change the name. What is the word for the reverse of an emitter? <u></u><u></u></p><p class="MsoNormal"> <u></u><u></u></p><div><h2 style="margin-top:13.5pt"><span style="font-size:15.5pt;font-family:Verdana,sans-serif;color:black">40.4.5 ParticleSystem</span><u></u><u></u></h2></div><p class="MsoNormal"> <u></u><u></u></p><div><div><pre style="margin-left:18.75pt;font-family:monospace"><span style="font-family:Calibri,sans-serif">Contains this field called </span><span style="font-size:8.5pt;font-family:monospace;color:black">createParticles and another named enabled</span><u style="font-family:monospace"></u><u style="font-family:monospace"></u></pre></div><pre style="margin-left:18.75pt;font-family:monospace"><span style="font-size:8.5pt;font-family:monospace;color:black"> </span><u style="font-family:monospace"></u><u style="font-family:monospace"></u></pre></div><p class="MsoNormal">createP starts and stops and operates not like an enabled, which would kill all rather than just stop new. I think all the rest of controls are in there. If e/d moved upto <i><span style="font-size:12pt;font-family:Verdana,sans-serif;background-color:white;color:black">X3DParticleEmitterNode</span></i> then also move cP <span style="font-size:8.5pt;color:black">unless, and why not, allow emitter</span><u></u><u></u></p><div><pre style="margin-left:18.75pt;font-family:monospace"><span style="font-size:8.5pt;font-family:monospace;color:black"> to be an MF then add e/d amd cP for each emitter</span><span style="font-size:8.5pt;font-family:"Segoe UI Emoji",sans-serif;color:black">😊</span><u style="font-family:monospace"></u><u style="font-family:monospace"></u></pre></div><p class="MsoNormal"> <u></u><u></u></p><p class="MsoNormal">Fun and Lock,<u></u><u></u></p><p class="MsoNormal">Joe<u></u><u></u></p></div></div><div><div><p class="MsoNormal"> <u></u><u></u></p><div style="border-style:solid none none;border-top-width:1pt;padding:3pt 0in 0in;border-top-color:rgb(225,225,225)"><p class="MsoNormal"><b>From: </b><a href="mailto:yottzumm@gmail.com" target="_blank">John Carlson</a><br><b>Sent: </b>Friday, February 11, 2022 1:19 PM<br><b>To: </b><a href="mailto:brutzman@nps.edu" target="_blank">Brutzman, Donald (Don) (CIV)</a><br><b>Cc: </b><a href="mailto:x3d-public@web3d.org" target="_blank">X3D Public Mailing List (x3d-public@web3d.org)</a><br><b>Subject: </b>Re: [x3d-public] X3D minutes 11 FEB 2022: ,X3D4 Particle Systems component review,adding enabled field to X3DParticleEmitterNode ?<u></u><u></u></p></div><p class="MsoNormal"> <u></u><u></u></p><div><p class="MsoNormal">It also might be good to enable a kind of slo-mo effect, if not already handled. Also an emitter going in reverse.<u></u><u></u></p></div><div><p class="MsoNormal"> <u></u><u></u></p></div><div><p class="MsoNormal">So maybe something that goes -1 (backwards), 0 (disabled), 1 (enabled), and various slo-mo settings in-between. This would be a weighted factor on speed, where speed provides the maximum speed without the slo-mo setting.<u></u><u></u></p></div></div></div><div><div><div><p class="MsoNormal"> <u></u><u></u></p></div></div></div><div><div><div><div><div><p class="MsoNormal">On Fri, Feb 11, 2022 at 12:54 PM John Carlson <<a href="mailto:yottzumm@gmail.com" target="_blank">yottzumm@gmail.com</a>> wrote:<u></u><u></u></p></div></div></div></div></div><div><div><div><div><blockquote style="border-style:none none none solid;border-left-width:1pt;padding:0in 0in 0in 6pt;margin:5pt 0in 5pt 4.8pt;border-left-color:rgb(204,204,204)"><div><p class="MsoNormal" style="margin-left:9.6pt">I think it would be better to offer a transition from enabled to disabled and back. But perhaps that’s max speed and min speed?<u></u><u></u></p></div><div><p class="MsoNormal" style="margin-left:9.6pt"> <u></u><u></u></p></div><div><p class="MsoNormal" style="margin-left:9.6pt">But I agree that enabled is a good start, and adding a field for full on and full off with no transition is a good idea. One might think of scenes where a door is shut.<u></u><u></u></p></div><div><p class="MsoNormal" style="margin-left:9.6pt"> <u></u><u></u></p></div><div><p class="MsoNormal" style="margin-left:9.6pt">I’m not sure if full on/full off matches physical reality. I can think of examples like bombs, volcanoes and dropping things though.<u></u><u></u></p></div><div><p class="MsoNormal" style="margin-left:9.6pt"> <u></u><u></u></p></div><div><p class="MsoNormal" style="margin-left:9.6pt">A combination of min/max speed and on/off would cover the cases I’m thinking of.<u></u><u></u></p></div><div><p class="MsoNormal" style="margin-left:9.6pt"> <u></u><u></u></p></div><div><p class="MsoNormal" style="margin-left:9.6pt">John <u></u><u></u></p></div></blockquote></div></div></div></div><div><div><div><div><blockquote style="border-style:none none none solid;border-left-width:1pt;padding:0in 0in 0in 6pt;margin:5pt 0in 5pt 4.8pt;border-left-color:rgb(204,204,204)"><div><p class="MsoNormal" style="margin-left:9.6pt"> <u></u><u></u></p></div></blockquote></div></div></div></div><div><div><div><div><blockquote style="border-style:none none none solid;border-left-width:1pt;padding:0in 0in 0in 6pt;margin:5pt 0in 5pt 4.8pt;border-left-color:rgb(204,204,204)"><div><div><div><p class="MsoNormal" style="margin-left:9.6pt">On Fri, Feb 11, 2022 at 12:36 PM Brutzman, Donald (Don) (CIV) <<a href="mailto:brutzman@nps.edu" target="_blank">brutzman@nps.edu</a>> wrote:<u></u><u></u></p></div></div></div></blockquote></div></div></div></div><div><div><div><div><blockquote style="border-style:none none none solid;border-left-width:1pt;padding:0in 0in 0in 6pt;margin:5pt 0in 5pt 4.8pt;border-left-color:rgb(204,204,204)"><div><div><blockquote style="border-style:none none none solid;border-left-width:1pt;padding:0in 0in 0in 6pt;margin:5pt 0in 5pt 4.8pt;border-left-color:rgb(204,204,204)"><div><div><p class="MsoNormal" style="margin-left:19.2pt">Tweeted:<u></u><u></u></p><p class="MsoNormal" style="margin-left:19.2pt"> <u></u><u></u></p><p class="MsoNormal" style="margin-left:55.2pt"><span style="font-size:10pt;font-family:Symbol">·</span><span style="font-size:7pt;font-family:"Times New Roman",serif"> </span>X3D meeting minutes 11 FEB 2022: #X3D4 Architecture Particle Systems component review. Community question: is it OK to add 'enabled' field to all emitter nodes, providing simpler animation control by authors and end users?<u></u><u></u></p><p class="MsoNormal" style="margin-left:55.2pt"><span style="font-size:10pt;font-family:Symbol">·</span><span style="font-size:7pt;font-family:"Times New Roman",serif"> </span><a href="https://nam10.safelinks.protection.outlook.com/?url=https%3A%2F%2Ftwitter.com%2FWeb3DConsortium%2Fstatus%2F1492205445120815105&data=04%7C01%7Cbrutzman%40nps.edu%7C08272a39e0f44db1ddad08d9ee43cfc9%7C6d936231a51740ea9199f7578963378e%7C0%7C0%7C637802841598775553%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=qypcBPrNibgRiC6DZVrgRLlT9TfSbbVVUdKBGuFaBC4%3D&reserved=0" target="_blank">https://twitter.com/Web3DConsortium/status/1492205445120815105</a><u></u><u></u></p><p class="MsoNormal" style="margin-left:19.2pt"> <u></u><u></u></p><p class="MsoNormal" style="margin-left:19.2pt">Request: if anyone has links or screenshots of Particle System models in X3D4, we are happy to share them publicly. Thanks in advance for all posts.<u></u><u></u></p></div></div></blockquote></div></div></blockquote></div></div></div></div><div><div><div><div><blockquote style="border-style:none none none solid;border-left-width:1pt;padding:0in 0in 0in 6pt;margin:5pt 0in 5pt 4.8pt;border-left-color:rgb(204,204,204)"><div><div><blockquote style="border-style:none none none solid;border-left-width:1pt;padding:0in 0in 0in 6pt;margin:5pt 0in 5pt 4.8pt;border-left-color:rgb(204,204,204)"><div><div><div><p class="MsoNormal" style="margin-left:19.2pt"><span style="font-size:10pt;font-family:"Courier New""> </span><u></u><u></u></p><p class="MsoNormal" style="margin-left:19.2pt"><span style="font-size:10pt;font-family:"Courier New"">all the best, Don</span><u></u><u></u></p><p class="MsoNormal" style="margin-left:19.2pt"><span style="font-size:10pt;font-family:"Courier New"">-- </span><u></u><u></u></p><p class="MsoNormal" style="margin-left:19.2pt"><span style="font-size:10pt;font-family:"Courier New"">Don Brutzman Naval Postgraduate School, Code USW/Br <a href="mailto:brutzman@nps.edu" target="_blank" style="font-family:"Courier New"">brutzman@nps.edu</a></span><u></u><u></u></p><p class="MsoNormal" style="margin-left:19.2pt"><span style="font-size:10pt;font-family:"Courier New"">Watkins 270, MOVES Institute, Monterey CA 93943-5000 USA +1.831.656.2149</span><u></u><u></u></p><p class="MsoNormal" style="margin-left:19.2pt"><span style="font-size:10pt;font-family:"Courier New"">X3D graphics, virtual worlds, Navy robotics https://</span> <span style="font-size:10pt;font-family:"Courier New""><a href="http://faculty.nps.edu/brutzman" target="_blank" style="font-family:"Courier New"">faculty.nps.edu/brutzman</a></span><u></u><u></u></p></div><p class="MsoNormal" style="margin-left:19.2pt"> <u></u><u></u></p><div><div style="border-style:solid none none;border-top-width:1pt;padding:3pt 0in 0in;border-top-color:rgb(225,225,225)"><p class="MsoNormal" style="margin-left:19.2pt"><b>From:</b> Brutzman, Donald (Don) (CIV) <<a href="mailto:brutzman@nps.edu" target="_blank">brutzman@nps.edu</a>> <br><b>Sent:</b> Friday, February 11, 2022 9:28 AM<br><b>To:</b> X3D Public Mailing List (<a href="mailto:x3d-public@web3d.org" target="_blank">x3d-public@web3d.org</a>) <<a href="mailto:x3d-public@web3d.org" target="_blank">x3d-public@web3d.org</a>><br><b>Cc:</b> Brutzman, Donald (Don) (CIV) <<a href="mailto:brutzman@nps.edu" target="_blank">brutzman@nps.edu</a>><br><b>Subject:</b> X3D minutes 11 FEB 2022: , X3D4 Particle Systems component review, adding enabled field to X3DParticleEmitterNode ?<u></u><u></u></p></div></div><p class="MsoNormal" style="margin-left:19.2pt"> <u></u><u></u></p><p class="MsoNormal" style="margin-left:19.2pt">Attendees: Anita Havele, Vince Marchetti, Dick Puk, Don Brutzman. Regrets: Nicholas Polys, John Carlson.<u></u><u></u></p><p class="MsoNormal" style="margin-left:19.2pt"> <u></u><u></u></p></div></div></blockquote></div></div></blockquote></div></div></div></div><div><div><div><div><blockquote style="border-style:none none none solid;border-left-width:1pt;padding:0in 0in 0in 6pt;margin:5pt 0in 5pt 4.8pt;border-left-color:rgb(204,204,204)"><div><div><blockquote style="border-style:none none none solid;border-left-width:1pt;padding:0in 0in 0in 6pt;margin:5pt 0in 5pt 4.8pt;border-left-color:rgb(204,204,204)"><div><div><p class="MsoNormal" style="margin-left:55.2pt">1.<span style="font-size:7pt;font-family:"Times New Roman",serif"> </span>Completed X3D4 Particle Systems component review. All Mantis issues updated and resolved. Latest modifications highlighted via CSS with corresponding Mantis issues documented using /title/ attributes.<u></u><u></u></p></div></div></blockquote></div></div></blockquote></div></div></div></div><div><div><div><div><blockquote style="border-style:none none none solid;border-left-width:1pt;padding:0in 0in 0in 6pt;margin:5pt 0in 5pt 4.8pt;border-left-color:rgb(204,204,204)"><div><div><blockquote style="border-style:none none none solid;border-left-width:1pt;padding:0in 0in 0in 6pt;margin:5pt 0in 5pt 4.8pt;border-left-color:rgb(204,204,204)"><div><div><p style="margin-left:0.25in"> <u></u><u></u></p><p class="MsoNormal" style="margin-left:55.2pt"><span style="font-size:10pt;font-family:Symbol">·</span><span style="font-size:7pt;font-family:"Times New Roman",serif"> </span>X3D4 Architecture, clause 37 Particle Systems component<u></u><u></u></p><p class="MsoNormal" style="margin-left:55.2pt"><span style="font-size:10pt;font-family:Symbol">·</span><span style="font-size:7pt;font-family:"Times New Roman",serif"> </span><a href="https://www.web3d.org/specifications/X3Dv4Draft/ISO-IEC19775-1v4-CD1/Part01/components/particleSystems.html" target="_blank">https://www.web3d.org/specifications/X3Dv4Draft/ISO-IEC19775-1v4-CD1/Part01/components/particleSystems.html</a> <u></u><u></u></p><div style="border-style:none none solid;border-bottom-width:1.5pt;padding:0in 0in 1pt;border-bottom-color:windowtext"><p class="MsoNormal" style="margin-left:19.2pt"> <u></u><u></u></p></div><p class="MsoNormal" style="margin-left:19.2pt"> <u></u><u></u></p><p class="MsoNormal" style="margin-left:19.2pt">a. Improved issue notes, WindPhysicsModel:<u></u><u></u></p><p class="MsoNormal" style="margin-left:19.2pt"> <u></u><u></u></p><p class="MsoNormal" style="margin-left:55.2pt"><span style="font-size:10pt;font-family:Symbol">·</span><span style="font-size:7pt;font-family:"Times New Roman",serif"> </span>Mantis <span style="font-size:10pt;font-family:Verdana,sans-serif;background-color:rgb(243,243,243);color:black">464: 40.4.10 WindPhysicsModel - Question on Speed</span> <u></u><u></u></p><p class="MsoNormal" style="margin-left:55.2pt"><span style="font-size:10pt;font-family:Symbol">·</span><span style="font-size:7pt;font-family:"Times New Roman",serif"> </span><a href="https://www.web3d.org/member-only/mantis/view.php?id=464" target="_blank">https://www.web3d.org/member-only/mantis/view.php?id=464</a><u></u><u></u></p><p class="MsoNormal" style="margin-left:55.2pt"><span style="font-size:10pt;font-family:Symbol">·</span><span style="font-size:7pt;font-family:"Times New Roman",serif"> </span>Related issue: Mantis 768. Deferred to X3D 4.1<u></u><u></u></p><p> <u></u><u></u></p><p class="MsoNormal" style="margin-left:19.2pt"><span style="font-size:10pt;font-family:Verdana,sans-serif;background-color:rgb(243,243,243);color:black">Likely pressure equation for future use will be based on difference between particle speed and wind speed.</span><span style="font-size:10pt;font-family:Verdana,sans-serif;color:black"><br clear="all"><br clear="all"><span style="font-family:Verdana,sans-serif;background-color:rgb(243,243,243)">Note that the turbulence definition (regarding variability of wind direction) also needs improvement. For example, can highly turbulent wind stop or reverse direction?</span></span><u></u><u></u></p><div style="border-style:none none solid;border-bottom-width:1.5pt;padding:0in 0in 1pt;border-bottom-color:windowtext"><p class="MsoNormal" style="margin-left:19.2pt"> <u></u><u></u></p></div><p style="margin-left:0.75in"> <u></u><u></u></p><p class="MsoNormal" style="margin-left:19.2pt">b. New deficiency noted: how do you turn off an emitter node?<u></u><u></u></p><p class="MsoNormal" style="margin-left:19.2pt"> <u></u><u></u></p><p class="MsoNormal" style="margin-left:19.2pt">No /enabled/ field is present. Possibly /speed/ might be zero, but then particle geometry would still be present and perhaps pulsing... Possibly a Switch node might hide it, but then the browser writer likely just turns it off anyway to save computational resources, which is functionally equivalent to enabled FALSE.<u></u><u></u></p><p class="MsoNormal" style="margin-left:19.2pt"> <u></u><u></u></p><p class="MsoNormal" style="margin-left:19.2pt">We discussed in some depth… Have raises an issue in Mantis, here posted publicly. We seek comment, and decide (hopefully next week) whether it is something to be accomplished in X3D 4.0 or else deferred to X3D 4.1. <u></u><u></u></p><div style="border-style:none none solid;border-bottom-width:1.5pt;padding:0in 0in 1pt;border-bottom-color:windowtext"><p class="MsoNormal" style="margin-left:19.2pt"> <u></u><u></u></p></div><p class="MsoNormal" style="margin-left:19.2pt"> <u></u><u></u></p><p class="MsoNormal" style="margin-left:55.2pt"><span style="font-size:10pt;font-family:Symbol">·</span><span style="font-size:7pt;font-family:"Times New Roman",serif"> </span>Mantis 1380: ability to disable/enable X3DParticleEmitterNode <u></u><u></u></p><p class="MsoNormal" style="margin-left:55.2pt"><span style="font-size:10pt;font-family:Symbol">·</span><span style="font-size:7pt;font-family:"Times New Roman",serif"> </span><a href="https://www.web3d.org/member-only/mantis/view_all_bug_page.php" target="_blank">https://www.web3d.org/member-only/mantis/view_all_bug_page.php</a><u></u><u></u></p><p class="MsoNormal" style="margin-left:19.2pt"><span style="font-size:10pt;font-family:Verdana,sans-serif;color:black"><br>Authors are unable to easily turn particle emitter nodes on or off.<br clear="all"><br clear="all">X3DParticleEmitterNode (and implementing nodes) need field:<br clear="all"><br clear="all"> SFBool [in out] enabled TRUE<br clear="all"><br clear="all">Implementation is simple for browsers. This field has no impact on legacy content.<br clear="all"><br clear="all">Current workarounds:<br clear="all">* Possibly /speed/ might be zero, but then a particle would still be present and pulsing...<br clear="all">* Possibly a Switch node might hide the emitter, but then the browser writer likely turns it off anyway to save computational resources, which is functionally equivalent to enabled FALSE.</span><u></u><u></u></p><p class="MsoNormal" style="margin-left:19.2pt"><span style="font-size:10pt;font-family:Verdana,sans-serif;color:black"> </span><u></u><u></u></p><p class="MsoNormal" style="margin-left:19.2pt"><span style="font-size:10pt;font-family:Verdana,sans-serif;color:black">Of related note: X3DParticlePhysicsModelNode in this component does include an enabled field, for identical purposes.</span><u></u><u></u></p><div style="border-style:none none solid;border-bottom-width:1.5pt;padding:0in 0in 1pt;border-bottom-color:windowtext"><p class="MsoNormal" style="margin-left:19.2pt"> <u></u><u></u></p></div><p class="MsoNormal" style="margin-left:19.2pt"> <u></u><u></u></p><p class="MsoNormal" style="margin-left:19.2pt">Vince discussed his Browser Review document noting X3D support, we hope to look at this draft further next week.<u></u><u></u></p><p class="MsoNormal" style="margin-left:19.2pt">No member-only information included on this page.<u></u><u></u></p><p class="MsoNormal" style="margin-left:19.2pt"> <u></u><u></u></p><p class="MsoNormal" style="margin-left:19.2pt">Hope everybody has another great week. Have fun with X3D!<u></u><u></u></p><p class="MsoNormal" style="margin-left:19.2pt"><span style="font-size:10pt;font-family:"Courier New""> </span><u></u><u></u></p><p class="MsoNormal" style="margin-left:19.2pt"><span style="font-size:10pt;font-family:"Courier New"">all the best, Don</span><u></u><u></u></p><p class="MsoNormal" style="margin-left:19.2pt"><span style="font-size:10pt;font-family:"Courier New"">-- </span><u></u><u></u></p><p class="MsoNormal" style="margin-left:19.2pt"><span style="font-size:10pt;font-family:"Courier New"">Don Brutzman Naval Postgraduate School, Code USW/Br <a href="mailto:brutzman@nps.edu" target="_blank" style="font-family:"Courier New"">brutzman@nps.edu</a></span><u></u><u></u></p><p class="MsoNormal" style="margin-left:19.2pt"><span style="font-size:10pt;font-family:"Courier New"">Watkins 270, MOVES Institute, Monterey CA 93943-5000 USA +1.831.656.2149</span><u></u><u></u></p><p class="MsoNormal" style="margin-left:19.2pt"><span style="font-size:10pt;font-family:"Courier New"">X3D graphics, virtual worlds, Navy robotics https://</span> <span style="font-size:10pt;font-family:"Courier New""><a href="http://faculty.nps.edu/brutzman" target="_blank" style="font-family:"Courier New"">faculty.nps.edu/brutzman</a></span><u></u><u></u></p><p class="MsoNormal" style="margin-left:19.2pt"> <u></u><u></u></p></div></div></blockquote></div></div></blockquote></div></div><p class="MsoNormal" style="margin-left:9.6pt">_______________________________________________<br>x3d-public mailing list<br><a href="mailto:x3d-public@web3d.org" target="_blank">x3d-public@web3d.org</a><br><a href="http://web3d.org/mailman/listinfo/x3d-public_web3d.org" target="_blank">http://web3d.org/mailman/listinfo/x3d-public_web3d.org</a><u></u><u></u></p><p class="MsoNormal"> <u></u><u></u></p></div></div></blockquote></div></div></blockquote></div></div></div></div></div></blockquote></div>
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