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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple style='word-wrap:break-word'><div class=WordSection1><p class=MsoNormal>John: don’t worry please. There is no substitute for looking at the references when we are considering correctness and completeness of the references.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Components and profiles are handled separately, found in the last table of each and every clause in the specification.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Infinite lengths and infinite values don’t occur. There are plenty of fields that have such limits on allowed values. [0,+infinity) means a value ranging from zero (inclusive) to any upper value. You can find an explanation of this nomenclature at<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><ul style='margin-top:0in' type=disc><li class=MsoListParagraph style='margin-left:0in;mso-list:l2 level1 lfo2'><b>X3D Tooltips: Range Intervals<o:p></o:p></b></li><li class=MsoListParagraph style='margin-left:0in;mso-list:l2 level1 lfo2'>https://www.web3d.org/x3d/tooltips/X3dTooltips.html#RangeIntervals<o:p></o:p></li></ul><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;background:#99CCCC'><span style='font-size:13.5pt;font-family:"Times New Roman",serif;color:black'><a href="https://www.web3d.org/x3d/tooltips/X3dTooltips.html#RangeIntervals"><b>Range Intervals</b></a> may be defined to indicate lower and upper bounds on allowed attribute values. These are typically defined by the X3D Architecture Specification in order to avoid illegal or illogical results. Value constraints being within allowed range intervals are checked by schema validation tools (but not XML DTD). Example range intervals:<o:p></o:p></span></p><ul type=disc><li class=MsoNormal style='color:black;mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l1 level1 lfo3;background:#99CCCC'><b><span style='font-size:10.0pt;font-family:"Courier New"'>[0,1]</span></b><span style='font-size:13.5pt;font-family:"Times New Roman",serif'> places limits on an allowed value from range 0 to 1, inclusive.<o:p></o:p></span></li><li class=MsoNormal style='color:black;mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l1 level1 lfo3;background:#99CCCC'><b><span style='font-size:10.0pt;font-family:"Courier New"'>(0,+∞)</span></b><span style='font-size:13.5pt;font-family:"Times New Roman",serif'> is positive, i.e. greater than zero and less than positive infinity.<o:p></o:p></span></li><li class=MsoNormal style='color:black;mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l1 level1 lfo3;background:#99CCCC'><b><span style='font-size:10.0pt;font-family:"Courier New"'>[0,+∞)</span></b><span style='font-size:13.5pt;font-family:"Times New Roman",serif'> is non-negative, i.e. greater than or equal to zero, and less than positive infinity.<o:p></o:p></span></li><li class=MsoNormal style='color:black;mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l1 level1 lfo3;background:#99CCCC'><b><span style='font-size:10.0pt;font-family:"Courier New"'>[-1,+∞)</span></b><span style='font-size:13.5pt;font-family:"Times New Roman",serif'> is greater than or equal to -1.<o:p></o:p></span></li><li class=MsoNormal style='color:black;mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l1 level1 lfo3;background:#99CCCC'><b><span style='font-size:10.0pt;font-family:"Courier New"'>(-∞,+∞)</span></b><span style='font-size:13.5pt;font-family:"Times New Roman",serif'> is unbounded, any numeric value is allowed.<o:p></o:p></span></li></ul><p class=MsoNormal>Regarding the suggested changes, here is another explanation:<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>The <span style='font-size:10.0pt;font-family:"Courier New"'>skeletalConfiguration</span> parameter is a label that authors can give a skeleton. Matching labels seems like a good practice to help confirm that size of an HAnimMotion node matches the parent HAnimHumanoid node.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>The <span style='font-size:10.0pt;font-family:"Courier New"'>totalNumberFrames</span> would simply allow dividing a (potentially quite large) MFFloat values array into the correct number of frames (rows) so that the correct number of joint-rotation animation values are provided at each frame index. While implementing support for this node in X3D-Edit, it seemed like the other values provided are ambiguous. Perhaps “channels” can be used, which list names and types for each channel of data. Adding up the counts (3 values for a single position, 4 values for each rotation) seems plausible but also error prone. Thus am suggesting an explicit field to confirm correctness of the data. Perhaps other implementers can suggest what worked for them.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>As ever, thanks for considering the possibilities. Have fun with HAnim2 and X3D4! 8)<o:p></o:p></p><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>all the best, Don<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>-- <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>Don Brutzman Naval Postgraduate School, Code USW/Br brutzman@nps.edu<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>Watkins 270, MOVES Institute, Monterey CA 93943-5000 USA +1.831.656.2149<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>X3D graphics, virtual worlds, Navy robotics https://</span> <span style='font-size:10.0pt;font-family:"Courier New"'>faculty.nps.edu/brutzman<o:p></o:p></span></p></div><p class=MsoNormal><o:p> </o:p></p><div><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b>From:</b> John Carlson <yottzumm@gmail.com> <br><b>Sent:</b> Monday, December 26, 2022 6:41 PM<br><b>To:</b> Brutzman, Donald (Don) (CIV) <brutzman@nps.edu>; X3D Graphics public mailing list <x3d-public@web3d.org><br><b>Subject:</b> Re: [x3d-public] Mantis 1415: HAnimMotion issues: skeletalConfiguration, totalNumberFrames<o:p></o:p></p></div></div><p class=MsoNormal><o:p> </o:p></p><div><div><p class=MsoNormal>I haven’t looked at online references, but infinite lengths scare me, there should be a component level or profile maximum.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p><div><div><p class=MsoNormal>On Mon, Dec 26, 2022 at 8:19 PM Brutzman, Donald (Don) (CIV) <<a href="mailto:brutzman@nps.edu">brutzman@nps.edu</a>> wrote:<o:p></o:p></p></div><blockquote style='border:none;border-left:solid #CCCCCC 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-right:0in'><div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Comment requested.<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p><ul type=disc><li class=m3583083415110384856msolistparagraph style='mso-list:l0 level1 lfo1'><a href="https://www.web3d.org/member-only/mantis/view.php?id=1415" target="_blank">https://www.web3d.org/member-only/mantis/view.php?id=1415</a><o:p></o:p></li></ul><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:10.0pt;font-family:"Verdana",sans-serif;color:black;background:#EBEBEB'>1. HAnimMotion should have a skeletalConfiguration field similar to HAnimHumanoid to facilitate interoperability.</span><span style='font-size:10.0pt;font-family:"Verdana",sans-serif;color:black'><br clear=all><br clear=all><span style='background:#EBEBEB'>SFString [in out] skeletalConfiguration "BASIC"</span><br clear=all><br clear=all><span style='background:#EBEBEB'>* HAnim2 vol. 1, 4.8 Modelling of humanoids</span><br clear=all><span style='background:#EBEBEB'>* </span></span><a href="https://www.web3d.org/documents/specifications/19774/V2.0/Architecture/concepts.html#ModellingOfHumanoids" target="_blank"><span style='font-size:10.0pt;font-family:"Verdana",sans-serif;color:royalblue;background:#EBEBEB;text-decoration:none'>https://www.web3d.org/documents/specifications/19774/V2.0/Architecture/concepts.html#ModellingOfHumanoids</span></a><span style='font-size:10.0pt;font-family:"Verdana",sans-serif;color:black'><br clear=all><br clear=all><span style='background:#EBEBEB'>* X3D Architecture, 26.3.2 HAnimHumanoid</span><br clear=all><span style='background:#EBEBEB'>* </span></span><a href="https://www.web3d.org/specifications/X3Dv4Draft/ISO-IEC19775-1v4-DIS/Part01/components/hanim.html#HAnimHumanoid" target="_blank"><span style='font-size:10.0pt;font-family:"Verdana",sans-serif;color:royalblue;background:#EBEBEB;text-decoration:none'>https://www.web3d.org/specifications/X3Dv4Draft/ISO-IEC19775-1v4-DIS/Part01/components/hanim.html#HAnimHumanoid</span></a><span style='font-size:10.0pt;font-family:"Verdana",sans-serif;color:black'><br clear=all><br clear=all><span style='background:#EBEBEB'>----</span><br clear=all><br clear=all><span style='background:#EBEBEB'>2. Need a field describing number of rows in a motion value array, otherwise (if no channelsEnabled array is provided) there is no unambiguous way to determine the correct value. Suggested:</span><br clear=all><br clear=all><span style='background:#EBEBEB'>SFInt32 [in out] totalNumberFrames [0, +infinity)</span><br clear=all><br clear=all><span style='background:#EBEBEB'>* HAnim2 vol. 2, 6.3 Data structure of Motion object</span><br clear=all><span style='background:#EBEBEB'>* </span></span><a href="https://www.web3d.org/documents/specifications/19774/V2.0/MotionDataAnimation/MotionNodes.html#MotionObject" target="_blank"><span style='font-size:10.0pt;font-family:"Verdana",sans-serif;color:royalblue;background:#EBEBEB;text-decoration:none'>https://www.web3d.org/documents/specifications/19774/V2.0/MotionDataAnimation/MotionNodes.html#MotionObject</span></a><span style='font-size:10.0pt;font-family:"Verdana",sans-serif;color:black'><br clear=all><br clear=all><span style='background:#EBEBEB'>* X3D Architecture, 26.3.4 HAnimMotion</span><br clear=all><span style='background:#EBEBEB'>* </span></span><a href="https://www.web3d.org/specifications/X3Dv4Draft/ISO-IEC19775-1v4-DIS/Part01/components/hanim.html#HAnimMotion" target="_blank"><span style='font-size:10.0pt;font-family:"Verdana",sans-serif;color:royalblue;background:#EBEBEB;text-decoration:none'>https://www.web3d.org/specifications/X3Dv4Draft/ISO-IEC19775-1v4-DIS/Part01/components/hanim.html#HAnimMotion</span></a><span style='font-size:10.0pt;font-family:"Verdana",sans-serif;color:black'><br clear=all><br clear=all><span style='background:#EBEBEB'>----</span><br clear=all><br clear=all><span style='background:#EBEBEB'>3. If accepted, each of these needs a corresponding Mantis comment for future revision of HAnim2.</span></span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:10.0pt;font-family:"Courier New"'> </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:10.0pt;font-family:"Courier New"'>all the best, Don</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:10.0pt;font-family:"Courier New"'>-- </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:10.0pt;font-family:"Courier New"'>Don Brutzman Naval Postgraduate School, Code USW/Br <a href="mailto:brutzman@nps.edu" target="_blank">brutzman@nps.edu</a></span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:10.0pt;font-family:"Courier New"'>Watkins 270, MOVES Institute, Monterey CA 93943-5000 USA +1.831.656.2149</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:10.0pt;font-family:"Courier New"'>X3D graphics, virtual worlds, Navy robotics https://</span> <span style='font-size:10.0pt;font-family:"Courier New"'><a href="http://faculty.nps.edu/brutzman" target="_blank">faculty.nps.edu/brutzman</a></span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p></div></div><p class=MsoNormal>_______________________________________________<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><o:p></o:p></p></blockquote></div></div></div></div></body></html>