<div dir="ltr">Hi there,<div><br></div><div>here is a x3dom only way to show the sections. It uses GeoElevationGrids for the full southern hemisphere and the partial northern hemisphere, and a DEF group of layered ArcClose2Ds for the section which is then reUSEd in transforms. </div><div><br></div><div><a href="http://plaza-omega.codio.io/x3dom/planet/index.xhtml">http://plaza-omega.codio.io/x3dom/planet/index.xhtml</a></div><div><br></div><div>One could add onmouseover handlers to show info for each layer.</div><div><br></div><div>It is curious that there is a ArcClose2D node but that the Disk2D node has not an option for a startAngle and endAngle which would have been useful here.</div><div><br></div><div>-Andreas</div><div><br><div class="gmail_extra"><br><div class="gmail_quote">On Sat, May 9, 2015 at 12:31 PM, John Carlson <span dir="ltr"><<a href="mailto:yottzumm@gmail.com" target="_blank">yottzumm@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><div style="word-wrap:break-word"><br><div><blockquote type="cite"><div>On May 9, 2015, at 10:58 AM, John Carlson <<a href="mailto:yottzumm@gmail.com" target="_blank">yottzumm@gmail.com</a>> wrote:</div></blockquote><blockquote type="cite"><div><div style="word-wrap:break-word"><div>Perhaps you could describe how to do prototypes with VRmath2 with Logo.</div><div><br></div><div><br></div></div></div></blockquote><div><br></div>In other words, can you do it in Logo, only mentioning DISH once and PIE once.</div><div><br><blockquote type="cite"><div><div style="word-wrap:break-word"><div>John<br><blockquote type="cite"><div><div style="word-wrap:break-word"><div>
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<div>Best,<br>
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Andy :-)</div>
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<div>On 9 May 2015, at 10:04 am, John Carlson <<a href="mailto:yottzumm@gmail.com" target="_blank">yottzumm@gmail.com</a>> wrote:</div>
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Andy. Thanks for your way. It has helped. I devised a little animation with X3DOM and D3.js based on your ideas: <a href="http://coderextreme.net/earth/world.html" target="_blank">http://coderextreme.net/earth/world.html</a>
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<div>On May 8, 2015, at 9:15 AM, Andy Yeh <<a href="mailto:a.yeh@qut.edu.au" target="_blank">a.yeh@qut.edu.au</a>> wrote:</div>
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Hi John,
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<div>I used a different way to construct the earth cross section.</div>
<div>See my blog at <a href="https://vrmath2.net/content/earth-cross-section" target="_blank">https://vrmath2.net/content/earth-cross-section</a></div>
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<div>—<br>
Andy :-)</div>
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<div>On 8 May 2015, at 6:51 pm, John Carlson <<a href="mailto:yottzumm@gmail.com" target="_blank">yottzumm@gmail.com</a>> wrote:</div>
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Thinking about this, it seems like this could be done with 2 extrusions, one per hemisphere. Anyone want to give it a try? I may get to it eventually.
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<div>John<br>
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<div>On May 7, 2015, at 11:28 PM, John Carlson <<a href="mailto:yottzumm@gmail.com" target="_blank">yottzumm@gmail.com</a>> wrote:</div>
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The earth.png is included in this email. The source code is <a href="http://coderextreme.net/eart" target="_blank">
http://coderextreme.net/eart</a>h/<span><earth.png></span><br>
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<div>On May 7, 2015, at 11:17 PM, John Carlson <<a href="mailto:yottzumm@gmail.com" target="_blank">yottzumm@gmail.com</a>> wrote:</div>
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Based on the blog below, I developed a CSG Earth cross section with Three.js. Here it is
<a href="http://coderextreme.net/earth/earth.png" target="_blank">http://coderextreme.net/earth/earth.png</a> Note that I’d like to make my “addShell” function a part of some declarative code (JSON, Collada, gilt, X3D or X3DOM, if they aren’t already there.
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<div>On May 7, 2015, at 3:06 PM, John Carlson <<a href="mailto:yottzumm@gmail.com" target="_blank">yottzumm@gmail.com</a>> wrote:</div>
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Here’s the example from the Learning Three.js blog. Seems performant enough: <a href="http://learningthreejs.com/data/constructive-solid-geometry-with-csg-js/" target="_blank">http://learningthreejs.com/data/constructive-solid-geometry-with-csg-js/</a> I want to
visualize the inner part of the earth.
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<div>John<br>
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<div>On May 7, 2015, at 2:48 PM, John Carlson <<a href="mailto:yottzumm@gmail.com" target="_blank">yottzumm@gmail.com</a>> wrote:</div>
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This may be an alternate solution:
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<div><a href="http://learningthreejs.com/blog/2011/12/10/constructive-solid-geometry-with-csg-js/" target="_blank">http://learningthreejs.com/blog/2011/12/10/constructive-solid-geometry-with-csg-js/</a></div>
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<div><a href="http://evanw.github.io/csg.js/" target="_blank">http://evanw.github.io/csg.js/</a></div>
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<div>Is there any chance we can get X3DOM to support this, at least for a limited number of shapes? I want to build a cross section of the earth in D3.js and X3DOM.</div>
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<div>Thanks!</div>
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<div>John<br>
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<div>On May 7, 2015, at 2:19 PM, John Carlson <<a href="mailto:yottzumm@gmail.com" target="_blank">yottzumm@gmail.com</a>> wrote:</div>
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Also: <a href="https://www.comp.nus.edu.sg/~lowkl/publications/realtime_csg_vrst2010.pdf" target="_blank">https://www.comp.nus.edu.sg/~lowkl/publications/realtime_csg_vrst2010.pdf</a> I think for my visualization, spheres may be sufficient.
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<div>John</div>
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<div>On May 7, 2015, at 1:55 PM, John Carlson <<a href="mailto:yottzumm@gmail.com" target="_blank">yottzumm@gmail.com</a>> wrote:</div>
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Given <a href="http://www.cc.gatech.edu/~jarek/blister/Blister.pdf" target="_blank">http://www.cc.gatech.edu/~jarek/blister/Blister.pdf</a>
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<div>Is the comment about constructive solid geometry (CSG) below still valid?<br>
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<div><a href="http://www.web3d.org/wiki/index.php/CAD_Working_Group_Strategy" target="_blank">http://www.web3d.org/wiki/index.php/CAD_Working_Group_Strategy</a></div>
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<div>Is it a matter of IP? Graphics cards?</div>
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<div>Is anyone doing CSG with X3D or X3DOM? Thanks!</div>
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<div>Thanks,</div>
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<div>John</div>
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