TITLE: "JERUPT2" an undersea vulcano eruption
NAME: Joost Egelie
COUNTRY: Belgium
EMAIL: sandra.joost@pi.be
WEBPAGE: http://www.skynet.be/users/egelie/ but it STILL needsupdating...

TOPIC: Sea
COPYRIGHT: I SUBMIT TO THE STANDARD RAYTRACING COMPETITION COPYRIGHT.
JPGFILE: jerupt2.jpg
ZIPFILE: jerupt2.zip
RENDERER USED: 
    MacMegaPOV v0.5 by The Smellenbergh Team

TOOLS USED: 
    PhotoShop for various adjustments to the PNG-maps

RENDER TIME: 
    02hrs 44min 37sec of which the parse took 11sec

HARDWARE USED: 
    Apple Mac G4 350MHz (Sawtooth) 64MB Ram


IMAGE DESCRIPTION: 

Many moons ago (exactly 1 year), I created the scene "eruption" for the topic
"Landmarks". This time I felt challenged to make another eruption, now
underseas.


DESCRIPTION OF HOW THIS IMAGE WAS CREATED: 

I went looking out for some photo's of undersea vulcano eruptions, but never
found any. I guess they are rarer than I thought, since I remember seeing a few
documentaries on this subject on TV. Yet, I found some very cool pictures of
lava flowing into the sea at http://wwwhvo.wr.usgs.gov/ .

The way everything looks under water was emulated by using a cylinder camera,
with an adjusted angle. The seawater itself was created using both fog (with
lots of turbulence) and media. Hence the rendertime...

The lava was made by using a material_map, with a tiny ribbon of clear veins
through it. The art of making it glow is to put a media in its interior, and
give it a negative extinction value... in stead of vanishing, the light
accumulates as it travels distance so you get light of it while not using a
light_source!

The suds are the fishy part. I tried over and over, and pulled maby a hundred
renderings, but I can't seem to get it right. First I tried using the density
field I used last year, but somehow the fog and media around it can't seem to
penetrate the containing body of the density field. After a while I started
using 8192 spheres, and it looked somewhat better... but I'm not yet satified
with the result. So I'll just send this one in, in the hope someone else can
tell me how to make nice steamclouds under the pressure of tons of water...

Contact me at sandra.joost@pi.be .
Contact the Smellenbergh team at smellenbergh@skynet.be .


