IRC log for #brlcad on 20121116

04:38.26 brlcad isolates the solids regression failure
04:41.07 brlcad n_reed: looks like r53495 breaks regression, running [view size] is giving a near-zero size instead of the default (4000)
04:41.50 brlcad haven't investigated why yet, just finally isolated the commit
05:40.20 *** join/#brlcad elf` (~elf11_@p5.eregie.pub.ro)
08:26.50 *** join/#brlcad andrei (~andrei@188.25.159.108)
11:09.06 *** join/#brlcad andrei (~andrei@188.25.159.108)
11:24.57 *** join/#brlcad elf` (~elf11_@p5.eregie.pub.ro)
13:05.31 *** join/#brlcad mang0-PC (~Verbatim_@client-86-25-30-28.midd-bam-1.adsl.virginmedia.com)
13:06.35 mang0-PC Hello all, I'm a student for Google Code In, and I'm very interested in doing some of the BRL-CAD tasks. I'm having a look at the list now, some of them look great!
13:19.40 ``Erik awesome, we're still refining and adding to the list, so if you have questions/concerns/observations/suggestions, throw 'em out :)
13:32.55 mang0-PC ``Erik: I can't see any to do with modelling on there? 3D modelling is my interest, I work with Blender normally. I can't think of any tasks that might involve modelling though, unless it was to test a new tool or something.
13:34.36 mang0-PC ``Erik: I do like the idea of the "2 hour tasks" though.
13:34.39 ``Erik I think our focus is more in building the tools to do the modeling
13:35.31 mang0-PC So I see
13:35.32 ``Erik 2 hours is sooo constraining, um, I was told that translation tasks were off the table so I'd be concerned about documentation/howto/cookbook type work
13:35.57 mang0-PC translation is off the table? About 75% of tasks last year were translation!
13:36.45 ``Erik yeah, surprised me, too... brlcad mentioned that yesterday at lunch, so he'd be the go to guy
13:37.15 mang0-PC I see, okay. Well I only speak English anyway, so translation tasks don't really matter to me ;)
13:37.20 ``Erik blender doesn't do full CSG, does it?
13:39.01 mang0-PC Not properly...the CSG features it does have are awful.
13:39.55 mang0-PC Reboot, back in a mo.
13:45.04 *** join/#brlcad mang0 (~Verbatim_@unaffiliated/mang0)
13:45.13 mang0 I have returned!
13:46.16 ``Erik "back in a mo", thought ya meant you were using windows and would take a month to reboot ;> *duck*
13:46.27 ``Erik what tz are you in?
13:46.58 mang0 I am using windows until this evening, when my ethernet cable will arive and I won't have to worry about my damn broadcom wireless card + linux!
13:47.02 mang0 I'm in UK, so GMT
13:47.12 mang0 owait cable's here now!
13:47.14 mang0 I think
13:47.15 mang0 sec.
13:47.26 ``Erik <-- is probably the worst person to talk to about tasks from a modellers perspective... thinks "going to use gimp to make a 2d image" and immediately starts up the script-fu console...
13:49.37 ``Erik we're mostly gmt-5 (edt), so you'll see the most activity here in the evening
13:49.39 mang0 Update: My cable won't be arriving until next week *sigh*
13:49.49 mang0 Okay, well that works fine with me :)
13:51.23 ``Erik in the mean time, feel free to download and play with the software, the latest svn checkout should compile with msvc or you could save the tgz and swap to linux if you have cmake and X already installed
13:52.01 ``Erik there're ~400 executables, the two biggies you'd use are probably mged and rt
13:52.34 ``Erik the automake build of the system is trailing edge support right now, cmake is the primary
13:53.47 andrei speaking of taking a month to do something, I tried to "bruteforce" 1/x + 1/y = 1/n! to get all (x,y) solutions. Didn't really go as planed tho :)
13:54.11 mang0 I see. I'll have a play, ``Erik
13:55.21 ``Erik andrei: uhhh, to what end? O.o :D
13:56.53 andrei you mean the constraints?
13:57.03 andrei <PROTECTED>
13:57.26 ``Erik mang0: good luck, hope you get your linux uplink working soon! other than general advice, I don't think I can help with msvc problems until monday, but *shrug* give it a shot and let us know :)
13:57.40 ``Erik andrei: no, I mean why the flying fuck would you do that? :>
13:57.50 mang0 ``Erik: Okay, will do!
13:59.07 *** join/#brlcad andrei (~andrei@188.25.159.108)
13:59.30 andrei ``Erik :I m solving various challenges as practice for my Palantir challenge on Sunday
13:59.45 andrei programming challenge, that is.
14:00.00 ``Erik andrei: memoizing the factorial correctly might reduce that from n^2^lg2n to n^2
14:00.11 andrei I found the solution, but it uses "deep" math.
14:00.29 ``Erik the brute force approach would be horribly inefficent
14:01.02 andrei Still, I don t see the point of problems like this.
14:01.13 andrei If you ve seen it before, you ll do it very fast, if you ve never seen it, you ll never do it.
14:01.46 ``Erik there's a tier of people who can move from the 'never seen it' to 'do it well' category, those people are gold
14:05.50 ``Erik here's another example, an easy one, I've changed the names to obfuscate the source a bit.. this is typically given as an interview question with 10 minutes to provide a psuedocode answer using pen&paper
14:05.54 ``Erik "Write a program that prints the numbers from 1 to 100. But for multiples of three print "Foo" instead of the number and for the multiples of five print "Bar". For numbers which are multiples of both three and five print "FooBar"."
14:06.53 mang0 :o
14:06.59 mang0 I know that as FizzBuzz
14:07.04 mang0 It's great fun to write in Python
14:07.30 andrei I ll just write something to make it more clear : %3 == "foo" %5 = bar %15 = foobar?
14:07.34 ``Erik :D yes, it's fizzbuzz... that's the name I obfuscated, bastage
14:07.41 ``Erik andrei: yes
14:07.49 andrei well you print the numbers and you very first if it s %15 == 0
14:08.25 andrei else if (%5 == 0)
14:08.33 andrei similar with 3, and lastly the number itself
14:08.41 ``Erik I saw someone throw out that only 40% of "qualified" software engineers can produce a correct solution
14:08.58 andrei I saw something similar with bubbleSort.
14:08.59 ``Erik (and that those who know that it's fizzbuzz are already in that qualified category)
14:09.47 andrei Well, when most people are confronted with a question either too simple or too hard, they make mistakes that they wouldn't have made otherwise.
14:10.38 andrei What happened to me very often was in various programming competitions I didn't have the patience to read the whole text and I solved something totally different than I was asked. Luckily that was during high school.
14:11.01 ``Erik solving the wrong problem doesn't help solve the right problem, yes
14:11.51 *** join/#brlcad cristina (~quassel@188.24.12.112)
14:12.32 ``Erik eric ries points out that many startup companies do nothing to validate the market, so they spend a lot of time and resources solving the wrong problem *shrug* root cause analysis is a crazy thing, I'm apt to go with the '5 whys' method
14:14.24 ``Erik anyway, yes, palintir would be using that to decide if you can solve problems, peter thiel is a bit of a name in the startup circuit, so he'd probably be using that early analysis approach and this is a test his company is using :) good luck O.o
14:16.39 andrei Thanks, and I truly hope you mean the Foobar , not the math one.
14:45.42 *** join/#brlcad merzo (~merzo@240-4-132-95.pool.ukrtel.net)
16:15.15 *** join/#brlcad Skriptkid (~Skriptkid@117.202.62.75)
16:16.53 *** part/#brlcad Skriptkid (~Skriptkid@117.202.62.75)
16:17.43 *** join/#brlcad Matrix__ (~Verbatim_@client-86-25-30-28.midd-bam-1.adsl.virginmedia.com)
16:23.31 *** join/#brlcad mang0 (~Verbatim_@unaffiliated/mang0)
16:35.12 brlcad mang0: welcome!
16:35.48 brlcad mang0: I'm planning on adding several modeling tasks (but they would all be using our tools which are crazy different from blender)
16:36.13 mang0 brlcad: Sure, that makes sense
16:36.19 mang0 Thanks :)
16:46.05 brlcad there is already at least one modeling task up there iirc
16:46.44 brlcad yep, under outreach
16:57.38 *** join/#brlcad nvl (5c3efb5f@gateway/web/freenode/ip.92.62.251.95)
17:54.00 brlcad waves to nvl
18:09.16 brlcad n_reed: it looks like one of your latest commits a couple days ago fixed the problem, no worries
18:57.50 mang0 Right, time to have a play with brlcad!
18:57.59 mang0 uhm, brl-cad*, sorry didn't realise it would ping you :P
19:02.58 mang0 Oh dear. I can't seem to get brl-cad working...I opened MGED, and then went file > new in the graphics window, to create a new database. I named it, and then when I went to hit save, brl-cad crashed....any ideas why that might be?
19:04.15 mang0 brlcad: ? ^
19:05.23 mang0 ``Erik: ?
19:05.54 *** join/#brlcad elf` (~elf11_@p5.eregie.pub.ro)
19:13.34 ``Erik "save"? O.o there shouldn't be a 'save'
19:14.28 ``Erik (it writes on change automagically, so make sure you mean to do something before you do it... personally, I use git as a poor mans undo)
19:14.50 mang0 ``Erik: http://puu.sh/1qSp7
19:15.05 mang0 That comes up when i go file > new in the Gaphics Window
19:15.11 mang0 and in the Command Window, actually
19:15.45 mang0 I'm just trying to get to some form of setup where I can create something
19:17.31 ``Erik ah, huh, do you have write permission where you're doing that? you can use the "opendb" command in the console window to create a new db file
19:18.49 mang0 Okay, I'll try that
19:19.29 mang0 Okay, so far so good
19:19.46 mang0 "The new database test.db was successfully created."
19:21.25 mang0 Okay, I can add stuff now
19:21.33 mang0 (I have no idea what I'm doing \o/)
19:22.57 ``Erik http://brlcad.org/w/images/c/cf/Introduction_to_MGED.pdf
19:23.04 ``Erik http://brlcad.org/wiki/Documentation
19:23.44 mang0 Thanks :0
19:23.46 mang0 :)*
20:46.57 brlcad 10 days to define more tasks
21:09.05 *** join/#brlcad cristina (~quassel@188.24.12.112)
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21:36.26 *** join/#brlcad andrei (~andrei@188.25.159.108)
22:12.30 starseeker brlcad: what's our policy on the BRL-CAD bib file? Should it contain only BRL-CAD related work?
22:12.41 starseeker (and if so, can I start a more general Raytracing.bib file?
22:31.21 brlcad starseeker: that's my take .. a general raytracing bib (even of only directly relevant work) would probably comprise several hundred or even a thousand papers
22:31.43 brlcad not opposed, but that is truly a big list
22:32.46 brlcad the raytracing book I lent you several years ago lists a hundred or so (in my office if you want to borrow it, probably can find it online too)

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