<html><head><meta http-equiv="Content-Type" content="text/html charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;">Andreas,<div><br></div><div>This seems like a good alternative. Let me propose a prose change for <a href="http://www.web3d.org/documents/specifications/19775-1/V3.3/Part01/components/geodata.html#GeoPositionInterpolator">http://www.web3d.org/documents/specifications/19775-1/V3.3/Part01/components/geodata.html#GeoPositionInterpolator</a>:</div><div><br></div><blockquote style="margin: 0 0 0 40px; border: none; padding: 0px;"><div>The GeoPositionInterpolator node provides an interpolator capability where key values are specified in geographic coordinates and the interpolation is performed within the specified spatial reference frame.</div></blockquote><div><br></div><div>becomes:</div><div><br></div><blockquote style="margin: 0 0 0 40px; border: none; padding: 0px;"><div>The GeoPositionInterpolator node provides an interpolator capability where key values are specified in geographic coordinates and the interpolation is performed within the specified spatial reference frame. <u>Great circle interpolation is recommended, future specifications will require great circle interpolation.</u></div></blockquote><div><br></div><div><br></div><div>The new sentence for version 4 of the spec. could be:</div><div><br></div><div><blockquote style="margin: 0 0 0 40px; border: none; padding: 0px;"><div><u>Interpolated values are required to follow a great circle.</u></div><div><br></div></blockquote></div><div>-Mike<br>
<br><div><div>On Apr 28, 2016, at 6:14 AM, doug sanden <<a href="mailto:highaspirations@hotmail.com">highaspirations@hotmail.com</a>> wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><br>Andreas,<br><br><blockquote type="cite">Alternatively, rather than introducing a new field it may suffice to<br> simply clarify in the appropriate spec. section that by default great<br> circle interpolation is recommended for consistency across geoSystems<br> and across browsers. This could be a recommendation and not a<br> requirement but possibly with a qualifier that future spec. revisions<br> will actually require great circle interpolation.<br></blockquote><br>Sounds good. <br>-Doug<br>BSc Surveying Engineering<br><br><br><br>_______________________________________________<br>x3d-public mailing list<br><a href="mailto:x3d-public@web3d.org">x3d-public@web3d.org</a><br>http://web3d.org/mailman/listinfo/x3d-public_web3d.org<br></blockquote></div><br></div></body></html>