Hi Geoffrey, <div><br></div><div>Can you try adding: steady_north=True in your camera call?</div><div><br></div><div><pre style="margin-top:0px;margin-bottom:0px;padding:5px 0px;font-family:&#39;Bitstream Vera Sans Mono&#39;,monospace;font-size:13px">

<span class="n">cam</span> <span class="o" style="color:rgb(102,102,102)">=</span> <span class="n">pf</span><span class="o" style="color:rgb(102,102,102)">.</span><span class="n">h</span><span class="o" style="color:rgb(102,102,102)">.</span><span class="n">camera</span><span class="p">(</span><span class="n">c</span><span class="p">,</span> <span class="n">L</span><span class="p">,</span> <span class="n">W</span><span class="p">,</span> <span class="p">(</span><span class="n">Nvec</span><span class="p">,</span><span class="n">Nvec</span><span class="p">),</span> <span class="n">tf</span><span class="p">,</span> <span class="n">north_vector</span><span class="o" style="color:rgb(102,102,102)">=</span><span class="n">north_vector</span><span class="p">,</span> steady_north=True, <span class="n">fields</span><span class="o" style="color:rgb(102,102,102)">=</span><span class="n">field</span><span class="p">)</span></pre>

<div><br></div><div>Sam</div><br><div class="gmail_quote">On Wed, Aug 1, 2012 at 3:22 PM, Geoffrey So <span dir="ltr">&lt;<a href="mailto:gsiisg@gmail.com" target="_blank">gsiisg@gmail.com</a>&gt;</span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">

I&#39;m not sure if this is related to the latest changes in volume rendering, I just updated my YT to see if the strange behavior of transfer function was fixed, but my old script which rotates the cube using cam.rotation now rotates the cube in strange ways, like the north vector is being redefined half way through the rotation.<div>


<br></div><div>Here&#39;s the script I used, and I just updated to the latest YT</div><div><div><a href="http://paste.yt-project.org/show/2612/" target="_blank">http://paste.yt-project.org/show/2612/</a></div><div><br></div>

<div><div>(dev-yt)4-c-ce-e0-97-1e:yt-hg gso$ hg summary</div>
<div>parent: 6186:2ff4b9960158 tip</div></div><div><br></div><div>From</div><span class="HOEnZb"><font color="#888888"><div>G.S.</div></font></span></div>
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