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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink="#954F72" style='word-wrap:break-word'><div class=WordSection1><p class=MsoNormal>Joe, thanks 1M for further sleuthing to figure out whether all of the fields in the Motion node of the HAnim2 spec are captured in the HAnimMotion node of the X3D4 spec.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><ol style='margin-top:0in' start=1 type=1><li class=MsoListParagraph style='color:black;margin-left:-.25in;mso-list:l3 level1 lfo8'><span style='color:windowtext'>First, looking at our example BVH source, right after “</span><span style='font-size:10.0pt;font-family:"Courier New";color:windowtext'>MOTION</span><span style='color:windowtext'>” it definitely says “</span><span style='font-size:9.0pt;font-family:"Courier New";background:white'>Frames: 482”</span><span style='font-size:9.0pt;background:white'> </span><span style='background:white'>in the specification example</span><span style='font-size:9.0pt;background:white'>.</span><span style='font-size:9.0pt;font-family:"Courier New";background:white'><o:p></o:p></span></li></ol><p class=MsoNormal><span style='font-size:9.0pt;font-family:"Courier New";color:black;background:white'><o:p> </o:p></span></p><ul style='margin-top:0in' type=disc><li class=MsoListParagraph style='margin-left:0in;mso-list:l1 level1 lfo7'>HAnim2, volume 2, Annex A.2 Motion data example with 18 joints<o:p></o:p></li><li class=MsoListParagraph style='margin-left:0in;mso-list:l1 level1 lfo7'>https://www.web3d.org/documents/specifications/19774/V2.0/MotionDataAnimation/MocapExample.html#MotionExample18Joints<o:p></o:p></li></ul><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Found similar entries in our other BVH exemplars as well. So the value can be expected in any BVH file.<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:l1 level1 lfo7'>https://www.web3d.org/x3d/content/examples/HumanoidAnimation/MotionAnimation/1.bvh<o:p></o:p></li><li class=MsoListParagraph style='margin-left:0in;mso-list:l1 level1 lfo7'>https://www.web3d.org/x3d/content/examples/HumanoidAnimation/MotionAnimation/Pirouette.bvh<o:p></o:p></li></ul><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>2. Next, carefully checking node signatures: looks like X3D4 misaligned <span style='font-size:10.0pt;font-family:"Courier New"'>frameCount</span> field, which matches what I thought was missing.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><table class=MsoTableGrid border=1 cellspacing=0 cellpadding=0 style='margin-left:-5.55pt;border-collapse:collapse;border:none'><tr><td style='border:none;padding:0in 0in 0in 0in' width=7><p class='MsoNormal'> </td><td width=342 valign=top style='width:256.35pt;border:solid windowtext 1.0pt;padding:0in 5.4pt 0in 5.4pt'><p class=MsoNormal>19774 HAnim2 Volume 2, Motion data animation<o:p></o:p></p></td><td width=366 valign=top style='width:274.5pt;border:solid windowtext 1.0pt;border-left:none;padding:0in 5.4pt 0in 5.4pt'><p class=MsoNormal>19775-1 X3D4 Architecture<o:p></o:p></p></td></tr><tr><td style='border:none;border-bottom:solid windowtext 1.0pt' width=7><p class='MsoNormal'> </td><td width=342 valign=top style='width:256.35pt;border:solid windowtext 1.0pt;border-top:none;padding:0in 5.4pt 0in 5.4pt'><p class=MsoNormal><a href="https://www.web3d.org/documents/specifications/19774/V2.0/MotionDataAnimation/MotionNodes.html#MotionObject">6.3 Data structure of Motion object</a><o:p></o:p></p></td><td width=366 valign=top style='width:274.5pt;border-top:none;border-left:none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;padding:0in 5.4pt 0in 5.4pt'><p class=MsoNormal><a href="https://www.web3d.org/specifications/X3Dv4Draft/ISO-IEC19775-1v4-DIS/Part01/components/hanim.html#HAnimMotion">26.3.4 HAnimMotion</a><o:p></o:p></p></td></tr><tr><td width=349 colspan=2 valign=top style='width:261.9pt;border:solid windowtext 1.0pt;border-top:none;padding:0in 5.4pt 0in 5.4pt'><p class=MsoNormal><b><span style='font-size:8.0pt;font-family:"Courier New";color:black;background:white'>interface Motion {</span></b><span style='font-size:8.0pt;font-family:"Courier New";color:black;background:white'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:8.0pt;font-family:"Courier New";color:black;background:white'> string description ""<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:8.0pt;font-family:"Courier New";color:black;background:white'> string channels ""<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:8.0pt;font-family:"Courier New";color:black;background:white'> sequence<Boolean> channelsEnabled []<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:8.0pt;font-family:"Courier New";color:black;background:white'> double cycleTime<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:8.0pt;font-family:"Courier New";color:black;background:white'> double elapsedTime<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:8.0pt;font-family:"Courier New";color:black;background:white'> Boolean enabled false<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:8.0pt;font-family:"Courier New";color:black;background:white'> int <span style='background:yellow;mso-highlight:yellow'>frameCount</span> 0 [0, ∞) <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:8.0pt;font-family:"Courier New";color:black;background:white'> float frameDuration 0.1 (0, ∞) <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:8.0pt;font-family:"Courier New";color:black;background:white'> int frameIncrement 1 (-∞, ∞)<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:8.0pt;font-family:"Courier New";color:black;background:white'> int frameIndex 0 [0, ∞) <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:8.0pt;font-family:"Courier New";color:black;background:white'> string joints ""<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:8.0pt;font-family:"Courier New";color:black;background:white'> integer loa -1 [-1,4]<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:8.0pt;font-family:"Courier New";color:black;background:white'> Boolean loop false<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:8.0pt;font-family:"Courier New";color:black;background:white'> Boolean next<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:8.0pt;font-family:"Courier New";color:black;background:white'> Boolean previous<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:8.0pt;font-family:"Courier New";color:black;background:white'> sequence<float> values [] (-∞,∞) <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:8.0pt;font-family:"Courier New";color:black;background:white'>}</span><span style='font-size:8.0pt'><o:p></o:p></span></p></td><td width=366 valign=top style='width:274.5pt;border-top:none;border-left:none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;padding:0in 5.4pt 0in 5.4pt'><p class=MsoNormal><span style='font-size:8.0pt;font-family:"Courier New";color:black'>HAnimMotion : X3DChildNode {<o:p></o:p></span></p><p class=MsoNormal style='margin-left:18.75pt'><span style='font-size:8.0pt;font-family:"Courier New";color:black'>SFBool [in] next<o:p></o:p></span></p><p class=MsoNormal style='margin-left:18.75pt'><span style='font-size:8.0pt;font-family:"Courier New";color:black'>SFBool [in] previous<o:p></o:p></span></p><p class=MsoNormal style='margin-left:18.75pt'><span style='font-size:8.0pt;font-family:"Courier New";color:black'>SFString [in,out] channels ""<o:p></o:p></span></p><p class=MsoNormal style='margin-left:18.75pt'><span style='font-size:8.0pt;font-family:"Courier New";color:black'>MFBool [in,out] channelsEnabled []<o:p></o:p></span></p><p class=MsoNormal style='margin-left:18.75pt'><span style='font-size:8.0pt;font-family:"Courier New";color:black'>SFString [in,out] description ""<o:p></o:p></span></p><p class=MsoNormal style='margin-left:18.75pt'><span style='font-size:8.0pt;font-family:"Courier New";color:black'>SFBool [in,out] enabled TRUE<o:p></o:p></span></p><p class=MsoNormal style='margin-left:18.75pt'><span style='font-size:8.0pt;font-family:"Courier New";color:black'>SFInt32 [in,out] endFrame 0 [0,∞)<o:p></o:p></span></p><p class=MsoNormal style='margin-left:18.75pt'><span style='font-size:8.0pt;font-family:"Courier New";color:black'>SFTime [in,out] frameDuration 0.1 (0,∞)<o:p></o:p></span></p><p class=MsoNormal style='margin-left:18.75pt'><span style='font-size:8.0pt;font-family:"Courier New";color:black'>SFInt32 [in,out] frameIncrement 1 (-∞,∞)<o:p></o:p></span></p><p class=MsoNormal style='margin-left:18.75pt'><span style='font-size:8.0pt;font-family:"Courier New";color:black'>SFInt32 [in,out] frameIndex 0 [0,∞)<o:p></o:p></span></p><p class=MsoNormal style='margin-left:18.75pt'><span style='font-size:8.0pt;font-family:"Courier New";color:black'>SFString [in,out] joints "" <o:p></o:p></span></p><p class=MsoNormal style='margin-left:18.75pt'><span style='font-size:8.0pt;font-family:"Courier New";color:black'>SFInt32 [in,out] loa -1 [-1,4]<o:p></o:p></span></p><p class=MsoNormal style='margin-left:18.75pt'><span style='font-size:8.0pt;font-family:"Courier New";color:black'>SFBool [in,out] loop false<o:p></o:p></span></p><p class=MsoNormal style='margin-left:18.75pt'><span style='font-size:8.0pt;font-family:"Courier New";color:black'>SFNode [in,out] metadata NULL<o:p></o:p></span></p><p class=MsoNormal style='margin-left:18.75pt'><span style='font-size:8.0pt;font-family:"Courier New";color:black'> [X3DMetadataObject]<o:p></o:p></span></p><p class=MsoNormal style='margin-left:18.75pt'><span style='font-size:8.0pt;font-family:"Courier New";color:black'>SFInt32 [in,out] startFrame 0 [0,∞)<o:p></o:p></span></p><p class=MsoNormal style='margin-left:18.75pt'><span style='font-size:8.0pt;font-family:"Courier New";color:black'>MFFloat [in,out] values [] (-∞,∞)<o:p></o:p></span></p><p class=MsoNormal style='margin-left:18.75pt'><span style='font-size:8.0pt;font-family:"Courier New";color:black'>SFTime [out] cycleTime<o:p></o:p></span></p><p class=MsoNormal style='margin-left:18.75pt'><span style='font-size:8.0pt;font-family:"Courier New";color:black'>SFTime [out] elapsedTime (0,∞)<o:p></o:p></span></p><p class=MsoNormal style='margin-left:18.75pt'><span style='font-size:8.0pt;font-family:"Courier New";color:black'>SFInt32 [out] <span style='background:yellow;mso-highlight:yellow'>frameCount</span> [0,∞)<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:8.0pt;font-family:"Courier New";color:black'>}<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:8.0pt'><o:p> </o:p></span></p></td></tr><tr><td width=349 colspan=2 valign=top style='width:261.9pt;border:solid windowtext 1.0pt;border-top:none;padding:0in 5.4pt 0in 5.4pt'><p class=MsoNormal><span style='font-size:9.0pt;font-family:"Verdana",sans-serif;color:black;background:white'>[…]<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:9.0pt;font-family:"Verdana",sans-serif;color:black;background:white'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:9.0pt;font-family:"Verdana",sans-serif;color:black;background:white'>The <i>frameCount</i> field indicates the number of frames present in the animation, equaling the number of sets of channel data present in the values array.</span><b><span style='font-size:9.0pt;font-family:"Courier New";color:black;background:white'><o:p></o:p></span></b></p></td><td width=366 valign=top style='width:274.5pt;border-top:none;border-left:none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;padding:0in 5.4pt 0in 5.4pt'><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:9.0pt;font-family:"Verdana",sans-serif;color:black'>HAnimMotion is used for motion animation of Humanoid characters. Raw motion data, for example, motion capture data, details the number of frames, the frame display time, and the parameter values for the motion from each channel at each frame.<o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:9.0pt;font-family:"Verdana",sans-serif;color:black'>Each field is described in <a href="https://www.web3d.org/specifications/X3Dv4Draft/ISO-IEC19775-1v4-DIS/Part01/references.html#I19774">ISO/IEC 19774</a>.</span><span style='font-size:12.0pt;font-family:"Verdana",sans-serif;color:black'><o:p></o:p></span></p></td></tr><tr height=0><td width=2 style='border:none'></td><td width=139 style='border:none'></td><td width=161 style='border:none'></td></tr></table><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>So… the <span style='font-size:10.0pt;font-family:"Courier New"'>frameCount</span> field should be accessType [in out], meaning that it is a settable parameter for node initialization, and changeable if the values array is changed too.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Knowing the value for <span style='font-size:10.0pt;font-family:"Courier New"'>frameCount</span> field lets the <span style='font-size:10.0pt;font-family:"Courier New"'>values</span> table to get set up and initialized with correct dimensions. This is also a useful property for authors setting up frame-animation widgets (such as DVD-style controls).<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Excellent improvement, and a necessary correction. No changes (and great foresight) in HAnim2. I will update Mantis 1415, X3D XML Schema and DTD, X3DUOM, X3D Tooltips and X3D-Edit accordingly.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Have fun implementing + evaluating X3D4 + HAnim2! 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> Joseph D Williams <joedwil@earthlink.net> <br><b>Sent:</b> Wednesday, December 28, 2022 12:36 PM<br><b>To:</b> Brutzman, Donald (Don) (CIV) <brutzman@nps.edu>; X3D Public Mailing List (x3d-public@web3d.org) <x3d-public@web3d.org>; h-anim@web3d.org<br><b>Subject:</b> RE: [x3d-public] Mantis 1415: HAnimMotion issues: skeletalConfiguration,totalNumberFrames<o:p></o:p></p></div></div><div><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b>From: </b><a href="mailto:brutzman@nps.edu">Brutzman, Donald (Don) (CIV)</a><br><b>Sent: </b>Monday, December 26, 2022 6:19 PM<br><b>To: </b><a href="mailto:x3d-public@web3d.org">X3D Public Mailing List (x3d-public@web3d.org)</a>; <a href="mailto:h-anim@web3d.org">h-anim@web3d.org</a><br><b>Subject: </b>[x3d-public] Mantis 1415: HAnimMotion issues: skeletalConfiguration,totalNumberFrames<o:p></o:p></p></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Comment requested.<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 lfo6'><a href="https://www.web3d.org/member-only/mantis/view.php?id=1415">https://www.web3d.org/member-only/mantis/view.php?id=1415</a><o:p></o:p></li></ul><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><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"><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"><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"><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"><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><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 <a href="mailto:brutzman@nps.edu">brutzman@nps.edu</a><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><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p></div></div></body></html>