JonathanGranskg Posted October 25, 2015 Share Posted October 25, 2015 Not sure if anyone has posted this before, but these Two Minute Paper videos by Károly are pretty interesting. https://www.youtube.com/user/keeroyz/videos 1 Quote Link to comment Share on other sites More sharing options...
mestela Posted October 25, 2015 Share Posted October 25, 2015 Those 2 minute paper vids look great, lucky there's only 20 of them, or they'd suck up all my free time! Quote Link to comment Share on other sites More sharing options...
Guest mantragora Posted October 30, 2015 Share Posted October 30, 2015 This is EPIC! Quote Link to comment Share on other sites More sharing options...
Guest tar Posted October 30, 2015 Share Posted October 30, 2015 (edited) This is EPIC! Hmmm - 'Info Wars' looks like Fox news...This is nothing new, try: Amusing Ourselves to Death: Public Discourse in the Age of Show Business (1985) by Neil Postman. https://en.wikipedia.org/wiki/Amusing_Ourselves_to_Death Brave New World is a novel written in 1931 by Aldous Huxley and published in 1932 https://en.wikipedia.org/wiki/Brave_New_World Edited October 30, 2015 by tar Quote Link to comment Share on other sites More sharing options...
Jason Posted October 30, 2015 Author Share Posted October 30, 2015 Alex Jones is an embarrassment to logical thinking. Epic, maybe, idiotic, absolutely. 2 Quote Link to comment Share on other sites More sharing options...
Guest mantragora Posted October 30, 2015 Share Posted October 30, 2015 Alex Jones is an embarrassment to logical thinking. Epic, maybe, idiotic, absolutely. Booo, I hope your Houdini will crash all day long. 1 Quote Link to comment Share on other sites More sharing options...
Guest mantragora Posted October 30, 2015 Share Posted October 30, 2015 (edited) BTW. I'm not sure that I posted this before, but I'm using this http://www.uahirise.org/katalogos.php site for like forever. They got tons of really cool images that can be used as alphas for Zbrush or displacements. For example this one: And it's all free! Edited October 30, 2015 by fântastîque Mântragorîè 1 Quote Link to comment Share on other sites More sharing options...
Guest tar Posted October 31, 2015 Share Posted October 31, 2015 Faster optimization New general-purpose optimization algorithm promises order-of-magnitude speedups on some problems. http://news.mit.edu/2015/faster-optimization-algorithm-1023 Quote Link to comment Share on other sites More sharing options...
Jason Posted November 2, 2015 Author Share Posted November 2, 2015 Calculating exact Oriented Bounding Boxes - complete with C++ code. http://clb.demon.fi/minobb/minobb_jylanki_2015_06_01.pdf 1 Quote Link to comment Share on other sites More sharing options...
animatrix Posted November 2, 2015 Share Posted November 2, 2015 Calculating exact Oriented Bounding Boxes - complete with C++ code. http://clb.demon.fi/minobb/minobb_jylanki_2015_06_01.pdf This paper and some other fast OBB algorithms use the convex hull of the input geometry. The one in Houdini and Bullet's convex hull generators are far from optimal, and implementing a fast, robust convex hull is a lot harder than OBBs. It would be nice if SESI added one to Houdini that did just that. Quote Link to comment Share on other sites More sharing options...
anim Posted November 3, 2015 Share Posted November 3, 2015 ... The one in Houdini and Bullet's convex hull generators are far from optimal... what are you basing this on? there seems to have been a lot of work done on that front for H15, but I personally don't know anything about algorithm behind, so just asking : Houdini 14.5.2: Added version 2.0 of the Shrinkwrap SOP, which uses the convex hull algorithm that the Bullet solver switched to in Houdini 13. This is significantly faster than the previous version (e.g. computing the convex hull of the squab model is about 20x faster) and simpler geometry is produced when shrinking convex hulls. Houdini 14.5.28: The Bullet solver is now about 10% faster when computing convex hulls. Houdini 14.5.35: Improved the performance of setting up convex hull shapes in the Bullet solver by about 20%. Houdini 14.5.37: Improved the performance of constructing convex hull collision shapes in the Bullet solver by about 75%. Houdini 14.5.58: Improved the performance and memory usage of the Bullet solver for convex hull shapes, particularly if the geometry only contains a primitive tube, sphere, box, or capsule. 1 Quote Link to comment Share on other sites More sharing options...
animatrix Posted November 3, 2015 Share Posted November 3, 2015 what are you basing this on? there seems to have been a lot of work done on that front for H15, but I personally don't know anything about algorithm behind, so just asking : Houdini 14.5.2: Added version 2.0 of the Shrinkwrap SOP, which uses the convex hull algorithm that the Bullet solver switched to in Houdini 13. This is significantly faster than the previous version (e.g. computing the convex hull of the squab model is about 20x faster) and simpler geometry is produced when shrinking convex hulls. Houdini 14.5.28: The Bullet solver is now about 10% faster when computing convex hulls. Houdini 14.5.35: Improved the performance of setting up convex hull shapes in the Bullet solver by about 20%. Houdini 14.5.37: Improved the performance of constructing convex hull collision shapes in the Bullet solver by about 75%. Houdini 14.5.58: Improved the performance and memory usage of the Bullet solver for convex hull shapes, particularly if the geometry only contains a primitive tube, sphere, box, or capsule. AFAIK libraries like qhull is a lot faster than most of the convex hull generators out there, which is a very well known library with lots of years of development. I remember seeing some performance stats comparing it to other computational geometry libraries. I believe only some special parallelized versions or one on the GPU was faster. Quote Link to comment Share on other sites More sharing options...
Guest tar Posted November 4, 2015 Share Posted November 4, 2015 AFAIK libraries like qhull is a lot faster than most of the convex hull generators out there, which is a very well known library with lots of years of development. I remember seeing some performance stats comparing it to other computational geometry libraries. I believe only some special parallelized versions or one on the GPU was faster. It's be better to dig up some concrete results as a quick search shows qhull as old, bad license and people want to improve on it: 'The qhull implementation has a somewhat questionable license and more significantly it is a really complex piece of software and contains a bunch of other features. I'm on a quest to create a fast, robust convex hull generator that is free to use and is self-contained in a single cpp file.' http://tuxedolabs.blogspot.co.nz/2013/03/convex-hulls-revisited.html Quote Link to comment Share on other sites More sharing options...
Jason Posted November 10, 2015 Author Share Posted November 10, 2015 WebGL Vortex Filaments - http://david.li/vortexspheres/ 5 Quote Link to comment Share on other sites More sharing options...
sebkaine Posted November 10, 2015 Share Posted November 10, 2015 Impressive stuff ! thanks for sharing Jason. Quote Link to comment Share on other sites More sharing options...
michael Posted November 10, 2015 Share Posted November 10, 2015 oooo... 0% radius and 100% variation let it play for a while and things get interesting 1 Quote Link to comment Share on other sites More sharing options...
Guest tar Posted November 13, 2015 Share Posted November 13, 2015 Prompted by a Gravity Force question today: General Relativity : Einstein vs. Newton Quote Link to comment Share on other sites More sharing options...
Skybar Posted November 13, 2015 Share Posted November 13, 2015 The topmodel for the new Broadwell-E coming next year might have 10 cores/20 threads! Workstation happiness! http://wccftech.com/intel-broadwell-e-specifications-leaked-core-i7-6950x-flagship-processor-10-cores-20-threads-core-i7-6900k-core-i7-6850k-core-i7-6800k-detailed/ 1 Quote Link to comment Share on other sites More sharing options...
jonp Posted November 16, 2015 Share Posted November 16, 2015 "On-line Learning of Parametric Mixture Models for Light Transport Simulation" http://cgg.mff.cuni.cz/~jirka/papers/2014/olpm/On-lineLearningPPMinLTS.pdf Quote Link to comment Share on other sites More sharing options...
stevegh Posted November 17, 2015 Share Posted November 17, 2015 Field aligned meshing: http://igl.ethz.ch/projects/instant-meshes/ https://github.com/wjakob/instant-meshes 5 Quote Link to comment Share on other sites More sharing options...
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