| --- Log opened Sun May 18 00:00:08 2014 | ||
| @fenn | Jan Torgersen and Jürgen Stampfl, a professor at TU Vienna's Institute of Materials Science and Technology | 00:00 |
|---|---|---|
| cpopell`werk | er, I'm curious about the motors used to move the mirrors and at what precision they control it | 00:00 |
| gradstudentbot | The autoclave smells really good. | 00:01 |
| @fenn | galvanometers are typically analog PID loop control and the precision is related to the SNR of the system, it's a tradeoff between speed and precision | 00:01 |
| cpopell`werk | okay, so what's the maximum precision | 00:01 |
| @fenn | absolute precision in mm or whatever is a crappy metric when dealing with hugely varying length scales | 00:01 |
| @fenn | that cathedral is 50um wide so probably 1um? | 00:02 |
| gnusha | https://secure.diyhpl.us/cgit/diyhpluswiki/commit/?id=4d3ed626 Bryan Bishop: define more opencascade packages >> http://diyhpl.us/diyhpluswiki/cad/opencascade/ | 00:02 |
| @fenn | i'm not sure if they were going for "as small as possible" or "as fast as possible" | 00:03 |
| kanzure | hrm the geom packages need to be sorted | 00:03 |
| gradstudentbot | You don't happen to have any more virgin flies, do you? | 00:03 |
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| delinquentme | http://www.sciencedirect.com/science/article/pii/S009286741300456X | 00:49 |
| delinquentme | paperbot, | 00:49 |
| delinquentme | paperbot, http://www.sciencedirect.com/science/article/pii/S009286741300456X | 00:50 |
| paperbot | http://diyhpl.us/~bryan/papers2/paperbot/6e44e0121ee6a630c2676119c11e6d36.txt | 00:50 |
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| @fenn | can you feel it smotchkiss http://fennetic.net/irc/tab_dump.2014-05-18 | 01:33 |
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| escapist | Is their any transhumanistic party in any country? | 06:38 |
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| kanzure | the italians have one, but it's mostly about fighting the other italian transhumanist political party | 06:42 |
| kanzure | fenn: not enough tabs | 06:42 |
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| escapist | kanzure , do you know there website/political programm? | 06:51 |
| xrr | I'm looking for the transcriptome of human zygote, any thoughts? | 06:59 |
| kanzure | escapist: no, and i don't recommend you look either. it's a huge waste of time. | 07:06 |
| kanzure | xrr: of a human zygote? that's going to be tough to find i think | 07:08 |
| escapist | ok, for school i have to "found" a political party, and i thought i would be interesting see classmates reacting to transhuman thought's. | 07:08 |
| kanzure | 1) you should drop out of school 2) do not model anything after the italian transhumanist political parties, because they spend 100% of their resources on bickering | 07:09 |
| escapist | What are the ten most important points for a liberal transhumanist parties the 10 goal's. | 07:09 |
| kanzure | i am not going to do your homework for you | 07:10 |
| kanzure | it's considered annoying to ask others to do your work for you | 07:10 |
| ParahSailin | basically same species http://www.publish.csiro.au/paper/RDv25n1Ab218 | 07:11 |
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| escapist | OK, i havent see things like this , you are right i ask other to do my work, indirectly. | 07:12 |
| escapist | But when do you already thought about this theme a lot, it is only natural to share opinions or experiences, in my opinion. You can call it lazy, yes it is. | 07:14 |
| escapist | But is lazyness and prevent other from reeingeninring stuff they are already invented not the point that pushed the Open Software and Hacker movement most? | 07:16 |
| escapist | kanzure do you agree on that point? | 07:17 |
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| kanzure | just copy whatever fucking pirate party you like and call it quits | 07:19 |
| xrr | ParahSailin: thanks, yeah, I guess a similar species is good enough, I found these articles http://goo.gl/UeIPNU and http://goo.gl/arf5qP that sequence human zygote, but haven't found any raw data | 07:19 |
| ParahSailin | xrr: let me tell you about paperbot | 07:21 |
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| kanzure | paperbot: http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0007844 | 07:21 |
| paperbot | http://diyhpl.us/~bryan/papers2/paperbot/Transcriptome%20Profiling%20of%20Human%20Pre-Implantation%20Development.pdf | 07:21 |
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| ParahSailin | paperbot: http://dx.doi.org/10.1038/nature12364 | 07:22 |
| paperbot | http://diyhpl.us/~bryan/papers2/paperbot/7b84d77cfc0a658522f60e91dee43f82.txt | 07:22 |
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| ParahSailin | xrr: well let me tell you about libgen which works all the time http://libgen.org:8089/scimag/?s=10.1038%2Fnature12364&siteid=&v=&i=&p=&redirect=1 | 07:25 |
| xrr | ParahSailin: thanks, paperbot is nice | 07:29 |
| kanzure | i don't think dx.doi.org links are supposed to work on paperbot yet? | 07:36 |
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| xrr | kanzure: the txt seems to be the full article in html. It lacks graphs and formatting, but better than nothing. Libgen seems to output a pdf. Magic :) | 07:43 |
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| ParahSailin | kanzure: they used to work | 08:38 |
| kanzure | xrr: paperbot dumps html when it gets confused, mostly for debugging, but sometimes you get lucky | 08:48 |
| kanzure | it's based on a principle of time travel | 08:49 |
| kanzure | dredd is a good movie | 08:50 |
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| kanzure | "In 1988 Haas started production on a fully enclosed CNC machining center priced well below the competition. Some believed Haas copied or reverse engineered this machine but at the time existing machines were so hard to use that Haas used them as an example of what not to do. Over time, Haas machine tools became extremely popular, mostly because they are simple, very affordable, and because the in-house designed computer control is ... | 09:34 |
| kanzure | ... operator-friendly (no soft-keys or cryptic menus).[2]" | 09:34 |
| kanzure | "By 1996, Haas had outgrown its facilities in Chatsworth, California and began a search that ultimately brought it to Oxnard, California. In March 1997, the move was completed into the Oxnard factory, a 420,000-square-foot (39,000 m2) facility. By 2005, the factory had been expanded to 1,000,000 square feet (93,000 m2)." | 09:34 |
| kanzure | "On the morning of June 19, 2006, Haas was arrested by IRS agents for investigation of filing false tax returns, witness intimidation, and conspiracy.[15] ... He was sentenced to 2 years in a federal prison and ordered to pay 75 million dollars in restitution." | 09:35 |
| kanzure | huh | 09:35 |
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| kanzure | haas machines were cheaper than the competition? don't they cost like $400k? | 09:37 |
| kanzure | what could the competitors have possibly been charging? | 09:37 |
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| gnusha | https://secure.diyhpl.us/cgit/diyhpluswiki/commit/?id=8d57d5e8 Bryan Bishop: opencascade geometry-related packages >> http://diyhpl.us/diyhpluswiki/cad/opencascade/ | 11:02 |
| gnusha | https://secure.diyhpl.us/cgit/diyhpluswiki/commit/?id=2cd7c990 Bryan Bishop: opencascade intersection-related packages >> http://diyhpl.us/diyhpluswiki/cad/opencascade/ | 11:02 |
| gnusha | https://secure.diyhpl.us/cgit/diyhpluswiki/commit/?id=e2a039b9 Bryan Bishop: opencascade packages about boundary representation >> http://diyhpl.us/diyhpluswiki/cad/opencascade/ | 11:02 |
| gnusha | https://secure.diyhpl.us/cgit/diyhpluswiki/commit/?id=b7a30fe5 Bryan Bishop: classify some opencascade packages >> http://diyhpl.us/diyhpluswiki/cad/opencascade/ | 11:02 |
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| @_archels | .title http://www.youtube.com/watch?v=y-54gBLwK3s | 11:29 |
| yoleaux | The Shanghai Maglev Train - 250mph - from WINDING ROAD | 11:29 |
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| kanzure | ooh, clang-format-3.5 -style=WebKit Intrv_Interval.lxx | 12:54 |
| kanzure | predefined styles are WebKit, Google, Mozilla, Chromium, etc | 12:54 |
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| kanzure | BRepAlgoAPI is really just a wrapper around BOPAlgo/BOPAlgo_Builder.cxx BOPAlgo_Builder::PerformInternal | 14:18 |
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| kanzure | .title http://syrris.com/ | 14:32 |
| yoleaux | Flow reactors, microreactors and productivity tools for R&D Chemists | 14:33 |
| kanzure | reactor thing: http://syrris.com/batch-products/atlas-overview | 14:33 |
| kanzure | "We specialize in systems that require large vessels (>5L), elevated pressures (>3 bar) or high temperatures (>250°C), alongside automation and datalogging." | 14:33 |
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| kanzure | they own http://www.dolomite-microfluidics.com/ | 14:35 |
| kanzure | http://www.dolomite-microfluidics.com/images/stories/PDFs/application_notes/Miniaturisation_of_Gas_Chromatography_%20Equipment_%20-_%20application%20note.pdf | 14:36 |
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| -!- Topic for ##hplusroadmap: biohacking, nootropics, transhumanism, open hardware | sponsored by george church and the NRA, banned by the Federal Death Administration (4 times) | http://gnusha.org/logs http://diyhpl.us/wiki | 15:18 | |
| -!- Topic set by kanzure [~kanzure@131.252.130.248] [Sun Apr 27 17:38:20 2014] | 15:18 | |
| [Users ##hplusroadmap] | 15:18 | |
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| -!- Channel ##hplusroadmap created Thu Feb 25 23:40:30 2010 | 15:18 | |
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| kanzure | fenn, so i finished sorting through the packages | 15:22 |
| kanzure | but there's 35 that i have classified as "curve algorithms" | 15:22 |
| gradstudentbot | His lab is so awkward. | 15:22 |
| kanzure | i was trying to count how many times they have implemented parabolas :x | 15:22 |
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| kanzure | https://github.com/dabeaz/bitey "The performance profile of Bitey is going to be virtually identical that of using ctypes. LLVM bitcode is translated to native machine code and Bitey builds a ctypes-based interface to it in exactly the same manner as a normal C library." | 15:42 |
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| QuantumG | oh, one thing you could do, if you don't want the pain of parsing C++ code, is read the debug symbols | 15:47 |
| QuantumG | I'm guessing you're compiling for some linux flavor.. DWARF symbols aren't that hard to understand and will tell you everything you want to know about your program. | 15:48 |
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| nsh | .wik DWARF symbols | 15:53 |
| yoleaux | "DWARF is a widely used, standardized debugging data format. DWARF was originally designed along with Executable and Linkable Format (ELF), although it is independent of object file formats." — http://en.wikipedia.org/wiki/DWARF | 15:53 |
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| QuantumG | http://www.sde.cs.titech.ac.jp/~gondow/dwarf2-xml/ <- people should do more like that | 15:57 |
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| poppingtonic | paperbot: http://dx.doi.org/10.1038 | 15:58 |
| paperbot | http://diyhpl.us/~bryan/papers2/paperbot/ee6cfb39238d73a27fdab690bcbd2cc8.txt | 15:58 |
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| kanzure | QuantumG: oh, i threw llvm at it, so now i have a few hundred megs of llvm IR code sitting around | 16:05 |
| QuantumG | enjoy that | 16:05 |
| QuantumG | I like the debug symbols approach because it doesn't involve installing a new compiler :) | 16:06 |
| kanzure | somehow i think installing a compiler isn't the problematic portion of my plan? | 16:07 |
| QuantumG | I don't even know your plan | 16:07 |
| kanzure | me either | 16:08 |
| @fenn | to try and take over the WORLD | 16:08 |
| kanzure | i think it involves deleting all this shit code | 16:08 |
| QuantumG | part of me really wants to write a web based software visualization tool | 16:14 |
| QuantumG | I keep it under control though | 16:14 |
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| kanzure | what is this thing called? http://www.visualphotos.com/photo/2x4747744/concentrating_surgeon_performing_operation_in_operating_room_28614.jpg | 16:24 |
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| kanzure | QuantumG: obviously what we need is a giant source code collider, where the files are split up into tiny reads and then reassembled using a gold-something algorithm | 16:24 |
| QuantumG | super collider? I hardly knew her! | 16:26 |
| kanzure | PerformInternal is basically the same in https://github.com/tpaviot/oce/tree/master/src/BOPAlgo/BOPAlgo_Builder.cxx and https://github.com/tpaviot/oce/tree/master/src/BOPAlgo/BOPAlgo_BOP.cxx | 16:32 |
| kanzure | guesses why? | 16:32 |
| kanzure | oh, the one in BOPAlgo_BOP::PerformInternal has a BuildShape() in there that the other one doens't | 16:40 |
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| nsh | QuantumG, software visualization? | 17:06 |
| nsh | you mean like a text editor or what? | 17:06 |
| nsh | or some kinda mad CPU where you can see all the robots inside fighting each other with giant trouts to the sound of manic minor music? | 17:07 |
| kanzure | presumably, the context is related to the terrible source code i've been pecking at | 17:08 |
| QuantumG | I mean like a class viewer | 17:08 |
| kanzure | http://diyhpl.us/wiki/cad/opencascade | 17:08 |
| gnusha | https://secure.diyhpl.us/cgit/diyhpluswiki/commit/?id=25e3459f Bryan Bishop: the intervals package is used only for hidden lines removal >> http://diyhpl.us/diyhpluswiki/cad/opencascade/ | 17:09 |
| gnusha | https://secure.diyhpl.us/cgit/diyhpluswiki/commit/?id=ec3fa554 Bryan Bishop: BOPAlgo notes >> http://diyhpl.us/diyhpluswiki/cad/opencascade/ | 17:09 |
| @fenn | .title http://www.cs.unm.edu/~dlchao/flake/doom/chi/chi.html | 17:09 |
| yoleaux | Doom as an Interface for Process Management | 17:09 |
| kanzure | code is mostly undocumented, lots of "packages", comments in 3 different languages (when there is a comment, it's never the right language) | 17:09 |
| dingo | remember that | 17:09 |
| dingo | thats like 15 years old hehe | 17:09 |
| kanzure | dingo, were you around at the company when the pre-python product was used? | 17:10 |
| dingo | nop | 17:10 |
| dingo | :) | 17:10 |
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| kanzure | if (iErr) myErrorStatus=30; // SolidBuilder failed | 18:12 |
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| kanzure | "Unconstrained Paving & Plastering: A New Idea for All Hexahedral Mesh Generation", Proceedings, 14th International Meshing Roundtable, Springer-Verlag, pp.399-416, September 11-14 2005 | 18:32 |
| kanzure | fenn, we could also just go to this http://www.opencascade.org/support/training/occofficetrain/ | 18:36 |
| gnusha | https://secure.diyhpl.us/cgit/diyhpluswiki/commit/?id=23121087 Bryan Bishop: just following the boolean operations algorithms >> http://diyhpl.us/diyhpluswiki/cad/opencascade/ | 19:34 |
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| kanzure | http://www.3ds.com/press-releases/single/dassault-systemes-signs-agreement-to-acquire-matra-datavisions-subsidiary/ | 19:45 |
| kanzure | "Paris, France, February 24, 1999 -- Dassault Systemes S.A. and Matra Datavision today announced that they have signed a definitive agreement whereby Dassault Systemes will acquire Matra Datavision’s EUCLID(d) STYLER, EUCLID MACHINIST, STRIM(d) and STRIMFLOW(d) technologies and associated expertise for FF 200 million. The company announced the proposed acquisition on December 8, 1998." | 19:45 |
| kanzure | $200 million FF for this stuff? | 19:45 |
| kanzure | i wonder if solidworks got any of it. solidworks was already pretty good by 1998, right? | 19:45 |
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| kanzure | "Pursuant to this agreement, Dassault Systemes will acquire a Matra Datavision subsidiary that owns the software products and will have access to the full license of Matra Datavision CAS.CADE(d) technology. This enables Dassault Systemes to expand its offerings, specifically in surface and free-form modeling, numerical control machining (NC) and plastic injection simulation." | 19:46 |
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| kanzure | "In 1997 Dassault, best known for its CATIA CAD software, acquired SolidWorks for $310 million in stock." | 19:46 |
| kanzure | hrm, so solidworks probably does not have opencascade code in it | 19:47 |
| kanzure | and it was using parasolid anyway | 19:49 |
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| @fenn | only if i get unlimited cheesecake | 20:00 |
| @fenn | you realize it's in france right | 20:01 |
| @fenn | http://www.opencascade.org/ex/images/448_primitivescompr_t_130.gif | 20:02 |
| @fenn | is a fillet specifically a circular radius or is it just a minimal surface? | 20:04 |
| @fenn | i am looking at this wondering if it's correct http://www.opencascade.org/ex/images/450_topologycompr_t_130.gif | 20:04 |
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| kanzure | what's wrong with going to france? | 20:20 |
| QuantumG | other than the french. | 20:20 |
| kanzure | going in person is sort of stupid anyway, you're right | 20:21 |
| kanzure | maybe just their email support. i wonder how much they'd charge me. | 20:21 |
| QuantumG | what for? | 20:23 |
| kanzure | to gut them | 20:23 |
| kanzure | plundering etc | 20:23 |
| kanzure | fenn, do you know what "pave filler" stuff is? it's something in the boolean operations library that occurs before fuse, cut, common, etc. | 20:26 |
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| @fenn | i don't really understand the problem they're trying to solve. why does a shape need to be covered in tiny quadrilaterals? | 20:43 |
| kanzure | maybe they aren't doing nurbs intersection and instead they are doing meshing? | 20:45 |
| @fenn | are they trying to use single polynomial surfaces for each "paver"? | 20:47 |
| @fenn | like, one for X and one for Y | 20:47 |
| @fenn | with height in Z | 20:47 |
| kanzure | .tr fr en pave | 20:48 |
| yoleaux | kanzure: Sorry, that command (.tr) crashed. | 20:48 |
| kanzure | one of their "pave" files is the 98th largest in the project, https://github.com/tpaviot/oce/blob/master/src/BOPAlgo/BOPAlgo_PaveFiller_6.cxx | 20:50 |
| kanzure | BOPAlgo_PaveFiller::PutClosingPaveOnCurve | 20:52 |
| kanzure | so a "pave" is a thing that can be put on a curve? | 20:52 |
| @fenn | it may just be their name fro quadilateral: http://www.opencascade.org/ex/images/454_chamfercompr_t_130.gif | 21:02 |
| @fenn | or quadricurvial: http://www.opencascade.org/ex/images/460_standfeatcompr_t_130.gif | 21:03 |
| @fenn | that oval thingy doesn't really fit, but maybe they have some filter to automatically remove the seam before displaying it | 21:03 |
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| kanzure | TopOpeBRepBuild/TopOpeBRepBuild_PaveSet.cdl ---Purpose:- -- class providing an exploration of a set of vertices to build edges.-- It is similar to LoopSet from TopOpeBRepBuild where Loop is Pave. | 21:18 |
| @fenn | grep "Pave is" src/ -R | 21:20 |
| kanzure | .d pave | 21:20 |
| kanzure | .ety pave | 21:20 |
| yoleaux | pave (v.): "early 14c., "to cover (a street) with stones or other material," from Old French paver "to pave" (12c.), perhaps a back-formation from Old French pavement or else from Vulgar Latin *pavare, from Latin pavire "to beat, ram, tread down," from …" — http://etymonline.com/index.php?term=pave | 21:20 |
| yoleaux | kanzure: Sorry, that command (.d) took too long to process. | 21:21 |
| @fenn | .wik pave | 21:21 |
| kanzure | might have something to do with interference | 21:21 |
| yoleaux | "Disambiguation: Pave" — http://en.wikipedia.org/wiki/Pave | 21:21 |
| @fenn | "To cover something with paving slabs." | 21:22 |
| kanzure | "The class BOPDS_Pave is to store-- information about vertex on an edge-" | 21:22 |
| @fenn | maybe it's an acronym, "point and vertex edge" ? | 21:23 |
| @fenn | "parameter and vertex edge" | 21:24 |
| @fenn | i dunno | 21:24 |
| kanzure | // 1. Find PaveBlocks that are go through nV for nF | 21:25 |
| kanzure | // PV = Parametrized vertex, VI = interference vertex | 21:27 |
| kanzure | that's from TopOpeBRepBuild_PaveSet::Prepare, which seems to have the most documentation | 21:28 |
| kanzure | https://github.com/tpaviot/oce/tree/master/src/TopOpeBRepBuild/TopOpeBRepBuild_PaveSet.cxx | 21:29 |
| kanzure | ah, section 4.4 has documentation on pave blocks... http://docs.salome-platform.org/salome_7_3_0/gui/GEOM/SALOME_BOA_PA.pdf | 21:31 |
| kanzure | oops, one section up (4.3) | 21:32 |
| @fenn | aParam - value of the parameter of the vertex on an edge | 21:32 |
| @fenn | guess i was right! | 21:33 |
| @fenn | from BOPTools_Pave.cdl | 21:33 |
| @fenn | this whole style of programming is so alien to me | 21:35 |
| kanzure | nPnt, nPntCol, nPPVIntf, "aren't the meanings obvious??" | 21:36 |
| @fenn | well even the documentation is bizarre | 21:36 |
| kanzure | i wonder who they are writing for | 21:37 |
| @fenn | great. googling "cdl file cxx" turns up OpenCASCADE | 21:37 |
| kanzure | why would a vertex take a parameter? | 21:37 |
| kanzure | yeah, they had their own custom little language | 21:38 |
| kanzure | that they used for submitting their svn repo to some buildfarm | 21:38 |
| kanzure | and each package of source code got to have that custom langugae file | 21:38 |
| @fenn | isn't there a law against that | 21:38 |
| kanzure | "Cascade Definition Language" (CDL) | 21:38 |
| gradstudentbot | Can I get Saturday off? | 21:38 |
| kanzure | i still don't understand this pave stuff | 21:40 |
| kanzure | why does a vertex need a parameter? | 21:40 |
| @fenn | do they mean vertex like where two edges meet, or vertex as in a triangle mesh? | 21:40 |
| @fenn | sorry, two "wires" | 21:41 |
| @fenn | (i hate that word) | 21:41 |
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| kanzure | their documentation actually uses the separation between geometry and topology as an excuse for why they have both edges and wires | 21:42 |
| kanzure | see my explanation here, http://diyhpl.us/wiki/cad/opencascade | 21:42 |
| kanzure | now, whether or not they adhere to that, who fucking knows | 21:42 |
| @fenn | for all the nPnt style shortening, there sure is a lot of Standard_Boolean crap | 21:46 |
| @fenn | does c++ not have the equivalent of "import x as y" or "import from" | 21:46 |
| @fenn | is everything globally namespaced? | 21:47 |
| @fenn | it looks like the Pave code deals with edges | 21:47 |
| kanzure | using namespace std; | 21:47 |
| @fenn | why do they always have ridiculously long class names then | 21:48 |
| kanzure | pave stuff has a lot of stuff... PerformVV, PerformVE, PerformEV, PerformEE, PerformEF, PerformVF, etc | 21:48 |
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| kanzure | the start of their classname is the package name | 21:48 |
| kanzure | (folder name) | 21:49 |
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| @fenn | hm i guess it's only one level deep after all: "TopOpeBRepBuild_Builder::GdumpORIPARPNT(v.Orientation(),p,BRep_Tool::Pnt(v));" | 21:49 |
| @fenn | this is what using an IDE gets you | 21:50 |
| @fenn | the ability to make unreadable code | 21:50 |
| kanzure | i think the TopOpeBRepBuild_Builder stuff might be deprecated, not sure | 21:50 |
| gradstudentbot | The fluorescent microscope is broken. | 21:51 |
| @fenn | yea it was ifdef'd | 21:51 |
| kanzure | oce/src/BOPAlgo$ grep -r "TopOpeBRepBuild" * | 21:51 |
| kanzure | nada | 21:51 |
| kanzure | although it may be used by a dependency | 21:52 |
| kanzure | i bet they use single letters because both (1) "how else is it going to fit in our heads?" and (2) "that's how it's done in the math papers, it's never been done differently" | 21:53 |
| @fenn | can an edge have any shape or is it limited? | 21:54 |
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| kanzure | hm this is blank: TopoDS/TopoDS_Edge.cxx | 21:55 |
| kanzure | dunno | 21:55 |
| @fenn | oh i don't mind the single letters as much as the mix between long words and large numbers of glommed together contractions and punctuation and single letters | 21:55 |
| kanzure | "Edge - a shape corresponding to a curve, and bound by a vertex at each extremity" | 21:55 |
| kanzure | (their definition) | 21:56 |
| @fenn | yeah but can it be a circle? a helix? a curve that is hard to represent with a single quintic polynomial? | 21:56 |
| @fenn | i know a wire can do these things because i've done it | 21:58 |
| @fenn | (seriously why didn't they call it a spline) | 21:58 |
| kanzure | "Wire - a sequence of edges connected by their vertices" | 21:58 |
| gradstudentbot | I think more research is required. | 21:58 |
| juri_ | i agree. | 21:58 |
| @fenn | ok gradstudentbot, thanks for the advice | 21:59 |
| gradstudentbot | The protocol is wrong. | 21:59 |
| @fenn | "A face with 3D underlying geometry" is such a terrible way to think about things | 22:02 |
| @fenn | there's geometry, and then there's tesselation of that geometry, and the tesselation is just a representation of the geometry that you can throw at a GPU | 22:03 |
| @fenn | brl-cad has "bag of triangles" to refer to something that's actually made of triangles | 22:04 |
| kanzure | i'm curious how the nurbs boolean operations work against surfaces that aren't nurbs, like a geometric primitive shape thing | 22:05 |
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| juri_ | taken a look at implicitcad? | 22:05 |
| @fenn | they probably convert the primitive into nurbs and then do nurbs-nurbs operations on it | 22:05 |
| kanzure | the primitive might not be a primitive anymore, but a csg thing of primitives? | 22:06 |
| kanzure | i guess they don't do csg really, so that wouldn't be a problem? | 22:06 |
| @fenn | this would explain why it's so slow | 22:06 |
| @fenn | also the csg kinda randomly explodes | 22:07 |
| kanzure | i don't see evidence that it's doing that, yet | 22:07 |
| @fenn | little bits of geometry everywhere | 22:07 |
| @fenn | not a pretty sight | 22:07 |
| @fenn | juri_: yes, it's cool, needs work. looks like the author abandoned it shortly after the first draft was complete | 22:08 |
| kanzure | i chat with olah pretty frequently, maybe i can coerce him if you'd like me to | 22:08 |
| kanzure | s/pretty frequently/more than you'd expect | 22:09 |
| @fenn | greater than zero, then | 22:09 |
| kanzure | here is where "cascade definition language" is from: http://dev.opencascade.org/doc/overview/html/occt_dev_guides__building_wok.html | 22:14 |
| kanzure | http://dev.opencascade.org/doc/overview/html/occt_dev_guides__cdl.html | 22:14 |
| @fenn | what the fuck is that shit | 22:22 |
| @fenn | get it off me! get it off me! | 22:22 |
| @fenn | aaaaah! | 22:22 |
| kanzure | what's the point of salome, again? | 22:26 |
| kanzure | it repeats a lot of opencascade code | 22:26 |
| kanzure | http://git.salome-platform.org/gitweb/ | 22:27 |
| kanzure | https://git.salome-platform.org/gitweb/?p=modules/geom.git;a=tree;f=src;h=e73b92237f9efa951c8082b9102c834bf01ce3f8;hb=HEAD | 22:27 |
| kanzure | ACIS import/export, neat https://git.salome-platform.org/gitweb/?p=plugins/acisplugin.git;a=tree;f=src;h=7a4f277bc785aaf3eaa89c2f544ec07bf3f7e7d6;hb=HEAD | 22:29 |
| kanzure | oh, only if you have the acis license bleh | 22:29 |
| @fenn | how do they know you have the license | 22:31 |
| kanzure | acis only distributes the library to you if you have a license | 22:33 |
| kanzure | otherwise you don't have the header files and stuff | 22:33 |
| kanzure | or the library | 22:33 |
| kanzure | i wonder if the boolean operations are more cleanly implemented in salome | 22:33 |
| kanzure | https://git.salome-platform.org/gitweb/?p=modules/geom.git;a=blob_plain;f=src/GEOMImpl/GEOMImpl_BooleanDriver.cxx;hb=HEAD | 22:34 |
| kanzure | #include <BRepAlgo.hxx> | 22:34 |
| kanzure | looks like it's using the same code under the hood, but i don't see an opencascade dependency? | 22:34 |
| kanzure | heh "The class BRepCheck_Analyzer is just hand-made tool that has its own problems. Examples of such | 22:40 |
| kanzure | problems" | 22:40 |
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| kanzure | fenn, here is your answer? | 23:07 |
| kanzure | // Depth of self-intersection check (see BOPAlgo_CheckerSI::SetLevelOfCheck() for more details) | 23:07 |
| kanzure | // Default value for BOPAlgo_CheckerSI gives very long computation when checking face-to-face intersections; | 23:07 |
| kanzure | // here check level is decreased to more appropriate value to avoid problems with performance). | 23:07 |
| kanzure | #define BOP_SELF_INTERSECTIONS_LEVEL 4 | 23:07 |
| kanzure | from https://git.salome-platform.org/gitweb/?p=modules/geom.git;a=blob_plain;f=src/GEOMImpl/GEOMImpl_PartitionDriver.cxx;hb=HEAD | 23:07 |
| juri_ | fenn: i'm planning to use it to model car parts. looks like very cool stuff to me. | 23:10 |
| @fenn | i haven't actually used it | 23:12 |
| kanzure | huh? i thought you wrote a thing with it | 23:15 |
| kanzure | was that me? | 23:16 |
| kanzure | there were entire objects | 23:16 |
| kanzure | and images were produced, there's evidence somewhere | 23:16 |
| kanzure | "In 1999, there were around 400,000 STEM PhDs in the US, but only 70,000 STEM academic faculty positions available. Today, there are over 800,000 STEM PhDs, but only around 100,000 STEM faculty positions [2]." http://www.nature.com/nbt/journal/v31/n10/fig_tab/nbt.2706_F1.html | 23:16 |
| kanzure | 800k phds? yeesh | 23:16 |
| QuantumG | it's almost like the education system isn't self-perpetuating! | 23:17 |
| QuantumG | those 730,000 PhDs might actually have to get real jobs. :( | 23:19 |
| @fenn | uh, "it" was in reference to implicitcad | 23:26 |
| kanzure | yeah, i know | 23:27 |
| @fenn | GOD IS WATCHING YOU https://upload.wikimedia.org/wikipedia/en/a/ad/Stmary4.jpg | 23:27 |
| @fenn | you know most churches are designed by atheists | 23:28 |
| gradstudentbot | Man, if only I could biopsy his organs. | 23:29 |
| cpopell`werk | how many Ph.D. specific jobs were there, tho? | 23:33 |
| kanzure | that's hard to figure out, because a phd person can just lie and say he doesn't have a phd in order to get whatever job he wants | 23:34 |
| kanzure | so even if the job doesn't report that it has a phd person occupying the station, it still may be a phd bearer | 23:35 |
| QuantumG | and there's plenty of jobs where it's an actual asset or at worst neutral | 23:35 |
| QuantumG | Every US company I've worked for had PhDs in top engineering positions, for example. | 23:36 |
| QuantumG | https://www.vmware.com/in/company/leadership/ole-agesen 15 years, dude. | 23:45 |
| kanzure | HE's the one responsible for vsphere? | 23:45 |
| kanzure | gah | 23:45 |
| kanzure | fucking vsphere aged me like 40 years in a month | 23:45 |
| kanzure | when i started i was a young girl, look at me now | 23:46 |
| kanzure | this is an approximation http://www.redcarpetnewstv.com/wp-content/uploads/2012/06/dredd2.jpg | 23:47 |
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| QuantumG | on a different matter, I find it somewhat frustrating when people get upset at you for talking down to them after they've just gotten upset with you for being too subtle. It's like, hey, do you want me to treat you like you know what you're talking about or do you want it explained to you, choose. | 23:59 |
| --- Log closed Mon May 19 00:00:09 2014 | ||
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