cg sphere back
(L) [2006/12/04] [fpsunflower] [cg sphere] Wayback!Here are a couple images I made this weekend for the popular cgsphere website:
[LINK http://www.cgsphere.com/gallery/?limit=6&fimit=0&view=date&category=Show%20All&artist=fpsunflower]
All of those were modelled procedurally and rendered with my own code.
Let me know what you think!
(L) [2006/12/04] [Ono-Sendai] [cg sphere] Wayback!Cool stuff, very impressive!
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[LINK http://indigorenderer.com/]
(L) [2006/12/04] [tbp] [cg sphere] Wayback!Oh, that's neat.
Competing with POV's isosurfaces, are you? [SMILEY Wink]
EDIT: me thinks the lighting Menger sphere needs more experimentations.
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May you live in interesting times.
[LINK https://gna.org/projects/radius/ radius] | [LINK http://ompf.org/ ompf] | [LINK http://ompf.org/wiki/ WompfKi]
(L) [2006/12/04] [Phantom] [cg sphere] Wayback!Very cool! Also, the combination of modelling and writing the ray tracer must feel good. [SMILEY Smile]
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(L) [2006/12/05] [olliej] [cg sphere] Wayback!The menger sphere especially [SMILEY Very Happy]
(L) [2006/12/05] [fpsunflower] [cg sphere] Wayback!Thanks guys [SMILEY Smile]
Yes I was quite happy to finally get the cube -> sphere warping working properly. Its basically a generalization of:
[LINK http://jgt.akpeters.com/papers/ShirleyChiu97/]
tbp: yeah I'd love to do many more images with the menger cube thingie (animated warpings?) but I better make my code a little faster first [SMILEY Wink] The images took between 1 and 5 hours each.
The aggregated surfaces aren't isosurfaces, they're just millions of spheres. The inspiration came from the amazing work of Andy Lomas ([LINK http://www.andylomas.com/]). His renderer took the particle idea and went quite a bit further with it. He's actually doing proper isosurfaces (although you can't really tell at the scale) and supports many millions of points. There's a whole slew of optimizations behind what he did - too bad he couldn't talk about them more during his siggraph talk.
(L) [2006/12/05] [toxie] [cg sphere] Wayback!really fantastic artwork!
more of that surrealistic stuff PLEASE! :)
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The box. You opened it. We came.
(L) [2006/12/05] [Michael77] [cg sphere] Wayback!Looks great [SMILEY Smile] I especially like the Menger Sphere. How is the lighting calculated?
(L) [2006/12/05] [fpsunflower] [cg sphere] Wayback!The lighting on all images is just an HDRI environment map approximated by ~100 directional lights. For the menger sphere I added a small area light in the center (a tetrahedron actually, because I haven't added true spherical area lights yet).
Then all images have once bounce of path tracing.
toxie: Thanks [SMILEY Smile] The menger sphere idea came to me as I was looking over one of the .ra2 files you gave us [SMILEY Wink]
(L) [2006/12/05] [tbp] [cg sphere] Wayback!I say stuff the sphere with lights, for a bright beamy mix between a 3rd type encounter & borg ship. Plug a midi file with cheap loud synth for drama [SMILEY Razz]
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May you live in interesting times.
[LINK https://gna.org/projects/radius/ radius] | [LINK http://ompf.org/ ompf] | [LINK http://ompf.org/wiki/ WompfKi]
(L) [2006/12/21] [beason] [cg sphere] Wayback!Yes, very nice! How did you do the sphere aggregation?
(L) [2007/01/05] [beason] [cg sphere] Wayback!Very nice, thanks for sharing that info.
Your description of the sampling, i.e. firing rays from a bounding sphere towards a central target (using a BB) sounds very similar to how I emit photons from an infinite area light (choosing emission spots using Pharr's PBRT importance sampling). If you did this maybe you could imprint some kind of discernable image as the spheres pile up higher in brighter areas (from brighter directions).
I'm just rambling sorry. Better get back to work [SMILEY Smile]
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