TITLE: Psalm 119 105 NAME: Nathan Kopp COUNTRY: United States EMAIL: nk80300@ltu.edu WEBPAGE: http://www.grfn.org/~nkopp/pov/gallery.html TOPIC: Night COPYRIGHT: I SUBMIT TO THE STANDARD RAYTRACING COMPETITION COPYRIGHT. JPGFILE: ps119105.jpg ZIPFILE: ps119105.zip RENDERER USED: Povray 3.02 for Windows with IsoSurface patch TOOLS USED: Moray 3.0, sPatch, PaintShop Pro, Povwin editor RENDER TIME: ??? HARDWARE USED: Pentium II 266 IMAGE DESCRIPTION: "Thy word is a lamp unto my feet, and a light unto my path." Psalms 119:105 Most of my images in the past, despite conveying emotion through artistic pathways, have been quite 'realistic.' Part of my motivation behind this image was to add some symbolism to a raytrace. For those without a Christian background: Just as we use candles, lanterns, and flashlights to light our physical world, so the Bible (God's word) illuminates the spiritual realms and provides direction to souls trapped in the darkness. I hope that by bringing religion into my ray-tracing I don't offend anyone. But Christianity and ray-tracing play such large roles in my life that the crossover was inevitable. DESCRIPTION OF HOW THIS IMAGE WAS CREATED: This image was created almost entirely in Moray 3.0. One feature that Moray still lacks, however, is the ability to set color values above 1.0 (which is necessary to create realistic flame-halos). The textures are mostly derived from textures in the Moray texture libraries with a bit (or a lot, in some cases) of tweaking to each one. The candle holder and candles were created in sPatch and textured in Moray. There are a LOT of patches in the candle holder, and thus it takes a very long time to parse, but not much time to render. There are small point lights inside the candles (as well as inside the flames) to make them glow in a realistic way. I also added emitting halos around the flames to create fake atmospheric interaction. The flashlight was done entirely in Moray. It's made mostly of more bezier patches. Although it looks like the light is shining from inside the flashlight, the light source is actually outside pointing the opposite direction. Doing it that way greatly decreased the trace time. The lantern consists of mostly sweeps and cylinders. Bezier patches make up the rails and the handle. The flame is another halo with more faked atmosphere interaction. The lantern is my favorite object in the scene. I found a picture of a brass lantern on the internet that it is modeled after. The Bible is created out of two translational sweeps (prisms) for the pages, a few Bezier patches for the cover and ribbon, and more patches for the top few pages. The texture for the side of the pages is a gradient pattern with warps to push pattern and make the lines (at least kind of) conform to the shape of the image. The words on the top few pages are mapped on via "map_type 8" in the Isosurface patch. This is a map_type which I created that allows the image to follow the U/V coordinates of the bezier (i.e. when you stretch the bezier, the image stretches with it). The use of "map_type 8" is quite limited (it must be applied directly to the patch, not to an object that has a patch in it), but it's easy to work around the limitations. The light shining down from above really does interact with the atmosphere, as does the cylindrical light coming from (well, actually it's pointing at) the flashlight. I found that these constrained light sources don't really slow down the render, but I had to turn the atmosphere off for all of my point-sources because it was just too slow. The IsoSurface version of Povray is available at: http://www.public.usit.net/rsuzuki/e/povray/iso/index.html