Edit page blog/2009/11

[wiki.git] / blog / 2009 / 11

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@@ -1,4 +1,4 @@
-== Fractal passion ==
+== Exploring Julia in 4 dimensions ==
 
 The discovery of the [[http://www.skytopia.com/project/fractal/mandelbulb.html | Mandelbulb]] awekened my old
 passion for fractals.
@@ -11,6 +11,8 @@ So I took the time to re-encode my old rendering of the [[http://en.wikipedia.or
 The sound track is [[http://lite.modarchive.org/index.php?request=view_by_moduleid&query=59288 | UranChrome]],
 an old-skool Amiga SoundTracker module composed by TorbJ0rn in 1989.
 
+=== Downloads ===
+
 If your browser sucks at HTML5, you can directly download the video files, available in several formats:
 
 || **Filename**                                                         || **Resolution**|| **Birate** ||**Video**||**Audio**||**Size**||
@@ -19,6 +21,18 @@ If your browser sucks at HTML5, you can directly download the video files, avail
 || [[pictures/julia4D/julia4D.avi | julia4D .avi]]                      || 1280x720 || 6000Kbit/s || H.264  || -        || 60MB ||
 || [[pictures/julia4D/julia4D-640x360.avi | julia4D-640x360.avi]]       ||  640x360 || 1200kbit/s || H.264  || -        || 12MB ||
 
+=== Rendering notes ===
+
+It took about 2 weeks of computation on a dual-core machine to render the 2048 high resolution frames contained in 82 seconds of video.
+My previous renderings at lower resolution and lower iteration count were much faster.
+
+A The high iteration count actually makes the fractal surface a little too polverized to appreciate. Adding transparency
+and gradients is another bad idea as it complicates things even more. If I find the time and motivation to re-render the
+animation, I'll look for better balance.
+
+In case someone wants to experiment, these are the [[pictures/julia4D/julia4D.pov | scene source]]
+and [[pictures/julia4D/julia4D.ini | ini file]] I used.
+
 === Video encoding notes ===
 
 The files were encoded from a sequence of PNG frames generated by POV-Ray,