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 .