<p dir="auto">Following is what I recently made using ThreeJS by importing OBJ files:<br>
<a href="http://devplace.in/~harman/geometry_viewer/mug.html" rel="nofollow">http://devplace.in/~harman/geometry_viewer/mug.html</a><br>
<a href="http://devplace.in/~harman/geometry_viewer/cylinder.html" rel="nofollow">http://devplace.in/~harman/geometry_viewer/cylinder.html</a></p>
<p dir="auto">Users report following problem:</p>
<ul dir="auto">
<li>The model appears (briefly flashing) while user rotates. It appeared just fine before I applied material. User just get a blue background and the performance monitor in the bottom left corner. If he rotate the invisible model really quickly, it'll display the model briefly for a frame or two, but then goes back to blue.</li>
</ul>
<p dir="auto">Similar issue has been noticed at threeJS Editor: <a href="http://threejs.org/editor/" rel="nofollow">http://threejs.org/editor/</a> Model disappears on changing renderer. However, I'm not sure whether both of these problems are same.</p>
<ul dir="auto">
<li>Some other set of users encountered edges / lines on the model surface even when wireframe flag was not set. See:</li>
</ul>
<p dir="auto"><a target="_blank" rel="noopener noreferrer nofollow" href="https://camo.githubusercontent.com/bba60fe38d257def0c4444181a547f0c12e1bc46f7679077b80615cf7569c135/68747470733a2f2f662e636c6f75642e6769746875622e636f6d2f6173736574732f313039343435372f3837323732312f37656633326464342d663836382d313165322d383736372d3536306466303561663837302e706e67"><img src="https://camo.githubusercontent.com/bba60fe38d257def0c4444181a547f0c12e1bc46f7679077b80615cf7569c135/68747470733a2f2f662e636c6f75642e6769746875622e636f6d2f6173736574732f313039343435372f3837323732312f37656633326464342d663836382d313165322d383736372d3536306466303561663837302e706e67" alt="screenshot from 2013-07-27 00_31_39" data-canonical-src="https://f.cloud.github.com/assets/1094457/872721/7ef32dd4-f868-11e2-8767-560df05af870.png" style="max-width: 100%;"></a></p>
<p dir="auto">and</p>
<p dir="auto"><a target="_blank" rel="noopener noreferrer nofollow" href="https://camo.githubusercontent.com/ede6d730bd0592f482f9f56adea9f0721d07d984a834028a7247130b1b48a25c/68747470733a2f2f662e636c6f75642e6769746875622e636f6d2f6173736574732f313039343435372f3837323636362f38323964306633632d663836372d313165322d393431312d3662383437623066613264302e6a7067"><img src="https://camo.githubusercontent.com/ede6d730bd0592f482f9f56adea9f0721d07d984a834028a7247130b1b48a25c/68747470733a2f2f662e636c6f75642e6769746875622e636f6d2f6173736574732f313039343435372f3837323636362f38323964306633632d663836372d313165322d393431312d3662383437623066613264302e6a7067" alt="jrqs84" data-canonical-src="https://f.cloud.github.com/assets/1094457/872666/829d0f3c-f867-11e2-9411-6b847b0fa2d0.jpg" style="max-width: 100%;"></a></p>
<p dir="auto">It looks like a renderer problem, but still not sure.</p>
<ul dir="auto">
<li>From above image of mug, one can see the inner yellow bottom from the outside of the mug which is unexpected.</li>
</ul>
<p dir="auto">So is it a bug(s) in ThreeJS or it should be something fixable by me?</p>
<p dir="auto">Following is what I recently made using ThreeJS by importing OBJ files:<br>
<a href="http://devplace.in/~harman/geometry_viewer/mug.html" rel="nofollow">http://devplace.in/~harman/geometry_viewer/mug.html</a><br>
<a href="http://devplace.in/~harman/geometry_viewer/cylinder.html" rel="nofollow">http://devplace.in/~harman/geometry_viewer/cylinder.html</a></p>
<p dir="auto">Users report following problems:</p>
<ul dir="auto">
<li>User just get a blue background and the performance monitor in the bottom left corner. If he rotate the invisible model really quickly, it'll display the model briefly for a frame or two, but then goes back to blue. It appeared just fine before I assigned material to models.</li>
</ul>
<p dir="auto">Similar problem has been noticed in ThreeJS Editor: <a href="http://threejs.org/editor/" rel="nofollow">http://threejs.org/editor/</a>. When one changes the renderer from the drop down, model disappears. However, I'm not sure whether both these problems are same.</p>
<ul dir="auto">
<li>Other user encountered edges / lines on model surface even when the wireframe flag is not true. See:</li>
</ul>
<p dir="auto"><a target="_blank" rel="noopener noreferrer nofollow" href="https://camo.githubusercontent.com/eca42c721182a705f904b09fa5d4e7aef63b6e1262ad3350c8896702499fbb57/68747470733a2f2f662e636c6f75642e6769746875622e636f6d2f6173736574732f313039343435372f3837333037372f32336566333265302d663837302d313165322d393935392d3933373463663335616638302e706e67"><img src="https://camo.githubusercontent.com/eca42c721182a705f904b09fa5d4e7aef63b6e1262ad3350c8896702499fbb57/68747470733a2f2f662e636c6f75642e6769746875622e636f6d2f6173736574732f313039343435372f3837333037372f32336566333265302d663837302d313165322d393935392d3933373463663335616638302e706e67" alt="screenshot from 2013-07-27 00_31_39" data-canonical-src="https://f.cloud.github.com/assets/1094457/873077/23ef32e0-f870-11e2-9959-9374cf35af80.png" style="max-width: 100%;"></a></p>
<p dir="auto">and</p>
<p dir="auto"><a target="_blank" rel="noopener noreferrer nofollow" href="https://camo.githubusercontent.com/827b497e2c9c80410b73fefa02e734f343e2567a0ab22afb55fb38a62be2e5cc/68747470733a2f2f662e636c6f75642e6769746875622e636f6d2f6173736574732f313039343435372f3837333037382f32613334323664382d663837302d313165322d393966362d3939343737323137393639632e6a7067"><img src="https://camo.githubusercontent.com/827b497e2c9c80410b73fefa02e734f343e2567a0ab22afb55fb38a62be2e5cc/68747470733a2f2f662e636c6f75642e6769746875622e636f6d2f6173736574732f313039343435372f3837333037382f32613334323664382d663837302d313165322d393966362d3939343737323137393639632e6a7067" alt="jrqs84" data-canonical-src="https://f.cloud.github.com/assets/1094457/873078/2a3426d8-f870-11e2-99f6-99477217969c.jpg" style="max-width: 100%;"></a></p>
<p dir="auto">This may be the renderer problem, but still not sure.</p>
<ul dir="auto">
<li>Also in above image of mug, one can see the inner yellow bottom from outside of the mug which is unexpected.</li>
</ul>
<p dir="auto">So, is it a bug(s) in ThreeJS or it should be something fixable by me?</p>