<div dir="ltr">Apparently, Euler angles can also be in radians. Sigh!</div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sat, Oct 14, 2023 at 2:09 AM John Carlson <<a href="mailto:yottzumm@gmail.com">yottzumm@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div><div dir="auto">Unity say Euler angles are in degrees. Does that answer the HAnimMotion question?</div><div dir="auto"><br></div><div dir="auto">Are euler angles always in degrees?</div><div dir="auto"><br></div><div dir="auto">John</div></div><div><div dir="auto"><br></div><div dir="auto"><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sat, Oct 14, 2023 at 1:57 AM John Carlson <<a href="mailto:yottzumm@gmail.com" target="_blank">yottzumm@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="auto">Angles are angles. Euler is not a unit.</div><div dir="auto"><br></div><div dir="auto">I don’t disagree with converting to axis angle, but I would prefer if the browser vendor would handle that in the HAnimMotion code.</div><div dir="auto"><br></div><div dir="auto">I realize that HAnimMotion is a high component level. I’m trying to promote use of HAnimMotion because I’m trying to export Katy’s data. If Katy or you have a better way to export animations, let’s use it.</div><div dir="auto"><br></div><div dir="auto">John</div><div dir="auto"><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sat, Oct 14, 2023 at 12:21 AM Joe D Williams <<a href="mailto:joedwil@earthlink.net" target="_blank">joedwil@earthlink.net</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div style="font-family:arial,sans-serif;font-size:12pt;color:rgb(0,0,0)"><p style="margin:0.1rem 0px;line-height:1;font-family:arial,sans-serif">> <span style="font-size:12pt;font-family:arial,sans-serif">Um, then why is angle even listed here?</span></p>
<p style="margin:0.1rem 0px;line-height:1;font-family:arial,sans-serif"> </p>
<p style="margin:0.1rem 0px;line-height:1;font-family:arial,sans-serif">That is easy, take another look. </p>
<p style="margin:0.1rem 0px;line-height:1;font-family:arial,sans-serif">Euler angles are not listed anywhere! </p>
<p style="margin:0.1rem 0px;line-height:1;font-family:arial,sans-serif">Convert to axis-angle like showed in Part 2 and forget xyz angles/</p>
<p style="margin:0.1rem 0px;line-height:1;font-family:arial,sans-serif">Joe</p>
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<p>-----Original Message-----<br>From: John Carlson <<a href="mailto:yottzumm@gmail.com" target="_blank">yottzumm@gmail.com</a>><br>Sent: Oct 13, 2023 6:15 PM<br>To: Joe D Williams <<a href="mailto:joedwil@earthlink.net" target="_blank">joedwil@earthlink.net</a>><br>Cc: <<a href="mailto:x3d-public@web3d.org" target="_blank">x3d-public@web3d.org</a>><br>Subject: Re: [x3d-public] Units for BVH vs HAnimMotion.values</p>
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<div dir="ltr">Um, then why is angle even listed here?
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<div>Confusing as heck!</div>
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<div><a href="https://www.web3d.org/documents/specifications/19775-1/V4.0/Part01/concepts.html#t-Standardunits" target="_blank">https://www.web3d.org/documents/specifications/19775-1/V4.0/Part01/concepts.html#t-Standardunits</a></div>
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<div>John</div>
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<div class="gmail_attr" dir="ltr">On Fri, Oct 13, 2023 at 7:19 PM Joe D Williams <<a href="mailto:joedwil@earthlink.net" target="_blank">joedwil@earthlink.net</a>> wrote:</div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div style="font-family:arial,sans-serif;font-size:12pt;color:rgb(0,0,0)">
<p style="margin:0.1rem 0px;line-height:1;font-family:arial,sans-serif"><span style="font-family:"Times New Roman";font-size:medium;white-space:normal;float:none;display:inline;color:rgb(0,0,0)">> otherwise specified in a UNIT statement </span></p>
<p style="margin:0.1rem 0px;line-height:1;font-family:arial,sans-serif"> </p>
<p style="margin:0.1rem 0px;line-height:1;font-family:arial,sans-serif"><span style="font-family:"Times New Roman";font-size:medium;white-space:normal;float:none;display:inline;color:rgb(0,0,0)"><a href="https://www.web3d.org/documents/specifications/19775-1/V4.0/Part01/concepts.html#Standardunitscoordinates" rel="noopener" style="font-family:"Times New Roman"" target="_blank">https://www.web3d.org/documents/specifications/19775-1/V4.0/Part01/concepts.html#Standardunitscoordinates</a></span></p>
<p style="margin:0.1rem 0px;line-height:1;font-family:arial,sans-serif"> </p>
<p style="margin:0.1rem 0px;line-height:1;font-family:arial,sans-serif"><span style="font-family:"Times New Roman";font-size:medium;white-space:normal;float:none;display:inline;color:rgb(0,0,0)">"However, the world coordinate units may be modified by specifying a different length unit using the UNIT statement."</span></p>
<p style="margin:0.1rem 0px;line-height:1;font-family:arial,sans-serif"> </p>
<p style="margin:0.1rem 0px;line-height:1;font-family:arial,sans-serif"><span style="font-family:"Times New Roman";font-size:medium;white-space:normal;float:none;display:inline;color:rgb(0,0,0)">There is Not Now nor will there Ever be a UNIT statement that allows degrees for rotation and orientation. </span></p>
<p style="margin:0.1rem 0px;line-height:1;font-family:arial,sans-serif"> </p>
<p style="margin:0.1rem 0px;line-height:1;font-family:arial,sans-serif"><span style="font-family:"Times New Roman";font-size:medium;white-space:normal;float:none;display:inline;color:rgb(0,0,0)">Never, will angles appear in any x3d animation interpolator. </span></p>
<p style="margin:0.1rem 0px;line-height:1;font-family:arial,sans-serif"><span style="font-family:"Times New Roman";font-size:medium;white-space:normal;float:none;display:inline;color:rgb(0,0,0)">To apply an import using angle units, it is converted to x3d before use, then discarded or possibly stored somewhere away from working area for reference. </span></p>
<p style="margin:0.1rem 0px;line-height:1;font-family:arial,sans-serif"> </p>
<p style="margin:0.1rem 0px;line-height:1;font-family:arial,sans-serif"><span style="font-family:"Times New Roman";font-size:medium;white-space:normal;float:none;display:inline;color:rgb(0,0,0)">Thanks and Best,</span></p>
<p style="margin:0.1rem 0px;line-height:1;font-family:arial,sans-serif"><span style="font-family:"Times New Roman";font-size:medium;white-space:normal;float:none;display:inline;color:rgb(0,0,0)">Joe</span></p>
<p style="margin:0.1rem 0px;line-height:1;font-family:arial,sans-serif"> </p>
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<p>-----Original Message-----<br>From: John Carlson <<a href="mailto:yottzumm@gmail.com" rel="noopener" target="_blank">yottzumm@gmail.com</a>><br>Sent: Oct 13, 2023 11:44 AM<br>To: X3D Graphics public mailing list <<a href="mailto:x3d-public@web3d.org" rel="noopener" target="_blank">x3d-public@web3d.org</a>><br>Subject: [x3d-public] Units for BVH vs HAnimMotion.values</p>
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Apparently BVH uses degrees for rotations. Units for HAnimMotion should use radians unless otherwise specified in a UNIT statement, AFAIK.
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<div dir="auto">Comments?</div>
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<div dir="auto">Thanks!</div>
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<div dir="auto">John </div>
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