The March-April IRTC round has
wrapped up, and congratulations to the winners. For the "Music" topic,
four of the six placing
as well as many other great entries were once again submitted with
source files, and we're quite pleased with some of the techniques that
these artists illustrated. This latest IRTC Watch article will look at
Phil Brewer's "Cacophony", Sean Day's "Strings", and Glenn McCarter's
"After The Jam" and some Povray tricks that were used in the images.
The SDL for each of the scenes discussed below was published on the
IRTC website, and are easily downloadable.
Everyone who submits their SDL with their IRTC entry does a service to
the rest of us by providing examples. Please remember to respect the
creator's work by not abusing the SDL. Also note that not everyone uses
Povray on the IRTC. Some scenes are created in MegaPov, while others use
self-written renders and other modeling tools. MegaPov scenes will
in Povray with a little modification, though it may not look quite the
same. And thus ends our standard disclaimer.
Phil Brewer produced this great image and it rightfully deserved a
place at the top for
this IRTC round. From this image, we want to highlight the tile floor.
It was a simple construct put to great use. Each of the tiles is a
super-ellipsoid with a square for grout. Great texturing took care of
the rest. We extracted a segment of the tile and reproduced it below,
showing the progression from super-ellipsoids to final tile. As always,
the images are linked to the Povray file used to generate them.
Super-ellipsoid Tiles With
Textured Tiles And Grout
This is a wonderful example of simple structures with great textures
producing amazing results.
In Sean Day's latest entry, we took notice of the brushed metal look
used for the tuning pegs. The results looked too good for procedural
textures along, and, for once, we were right. Sean created macros to
subtract lots of very thin tori
from sections of the tuning pegs to give the physical shape of brushed
metal. We extracted the tuning peg's CSG to illustrate the difference
the tori make as shown below.
Knob With Torus Differences
The difference is noticeable, but really comes alive when combined with
a good metal texture.
Knob with Torus Differences
This simple CSG technique is a great way to add life to brushed metal.
After The Jam
Although we're not going to dig into the Povray guts for this image,
gets a hat-tip for how he represented the audio sounds from each of the
instruments. We were quite convinced that the various instrument sound
representations were a complex atmospheric media creation. It was
pleasantly surprising to find out that the effects were all created
using pigments. This is a good reminder that it does not take
complexity to produce great results.
Once again, a great IRTC round! Beyond those mentioned above, we
got a real kick out of Marc Jacquier's "Sound
Add-on", but, alas, no Povray files. You can see all the
March-April entries at the viewing page.
The May-June "Light and Fog" round has already closed (there'll be an
IRTC Watch on that sooner or later), but the July-August "From Rubbage
Bin To Junkyard" round is still active, so get rendering!
Thanks to Phil, Sean, Glenn, and all the other artists, who share
their scene files for the rest of us to learn from!
Last Edited: 07/25/06
Copyright (C) 2006 Mike