<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" style='word-wrap:break-word'><div class=WordSection1><p class=MsoNormal>When you say morph targets, is this absolute or relative displacement data?</p><p class=MsoNormal>The Hanim displacer lists a displacement from original for each animated vertex.</p><p class=MsoNormal>Thanks, <o:p></o:p></p><p class=MsoNormal>Joe<o:p></o:p></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>Thursday, January 20, 2022 7:36 AM<br><b>To: </b><a href="mailto:michalis.kambi@gmail.com">Michalis Kamburelis</a><br><b>Cc: </b><a href="mailto:joedwil@earthlink.net">Joseph D Williams</a>; <a href="mailto:x3d-public@web3d.org">X3D Graphics public mailing list</a><br><b>Subject: </b>Re: [x3d-public] gltf inspired binary storage</p></div><p class=MsoNormal><o:p> </o:p></p><div><div><p class=MsoNormal>Let me just note that x3dom currently does not support morph targets or sparse accessors in glTF. Does castle engine translate morph targets to CoordinateInterpolators ?</p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>Regards, Andreas</p></div><p class=MsoNormal><o:p> </o:p></p><div><div><p class=MsoNormal>On Thu, Jan 20, 2022 at 6:47 AM Michalis Kamburelis <<a href="mailto:michalis.kambi@gmail.com">michalis.kambi@gmail.com</a>> wrote:</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'><p class=MsoNormal>Hi Joe,<br><br>> Can we also compare this with Hanim Displacer operation (target displacements of mesh and weights driven by 0 to 1 scale input) ?<br><br>>From what I understand,<br><br>- H-Anim Displacer means that you animate a (subset) of coordinates of the mesh.<br>- Which is equivalent in Blender to using a "hook" attached to a<br>vertex group. Useful e.g. to animate a jaw, or eye area, to make<br>facial expressions -- when you want to morph a mesh, but usually only<br>a small subset of the mesh changes by a particular animation.<br>- From what I understand this is equivalent to glTF morph target<br>animation with "Sparse Accessors",<br><a href="https://www.khronos.org/registry/glTF/specs/2.0/glTF-2.0.html#sparse-accessors" target="_blank">https://www.khronos.org/registry/glTF/specs/2.0/glTF-2.0.html#sparse-accessors</a><br>.<br><br>><br>> Can the glTF change number of points in a shape during the course of an animation?<br><br>No. Morph targets just change the coordinates' positions. Number of<br>points, as well as their topology (how they connect to polygons)<br>always stays the same.<br><br>Regards,<br>Michalis</p></blockquote></div><p class=MsoNormal><br clear=all></p><div><p class=MsoNormal><o:p> </o:p></p></div><p class=MsoNormal>-- </p></div><p class=MsoNormal>Andreas Plesch<br>Waltham, MA 02453</p><p class=MsoNormal><o:p> </o:p></p></div></body></html>