| 00:08.53 | *** join/#brlcad yukonbob (n=yukonbob@198.235.198.234) | |
| 00:28.59 | brlcad | alex_joni: hmm.. probably brl-cad format :) |
| 00:31.58 | alex_joni | brlcad: heh.. |
| 00:32.25 | brlcad | our ascii file format is very close to that, i'll give it a shot |
| 00:33.06 | alex_joni | brlcad: I managed to manually convert it some other format |
| 00:33.39 | brlcad | ah, great |
| 00:33.42 | brlcad | which one? |
| 00:34.18 | alex_joni | it's called REND ASCII |
| 00:34.18 | brlcad | off and obj would have been pretty easy to get to |
| 00:34.36 | alex_joni | bet you never heard of it.. had a sample file around |
| 00:34.52 | brlcad | yeah, not that I recall |
| 00:35.10 | alex_joni | I can do off in a second |
| 00:35.32 | alex_joni | http://web.axelero.hu/karpo/formats_m.html |
| 00:35.51 | alex_joni | some formats there.. |
| 00:36.39 | brlcad | kinda, cept was thinking a lot more information |
| 00:37.23 | alex_joni | yeah.. as a starting point at least |
| 00:37.48 | brlcad | like whether the format is polygonal-only, whether it supports brep, nurbs, implicits, volumetric, wireframe, 2D, 3D, CSG, solid geometry, etc |
| 00:37.51 | alex_joni | http://pastebin.ca/778884 |
| 00:37.51 | brlcad | yeah |
| 00:37.59 | alex_joni | I think that's the OFF translation |
| 00:39.52 | alex_joni | hmm.. loading it here with a crappy viewer doesn't work |
| 00:42.13 | alex_joni | ah, I know.. it's off by one |
| 00:42.43 | alex_joni | http://pastebin.ca/778890 |
| 00:57.19 | brlcad | hmm |
| 00:59.14 | alex_joni | I managed to convert it to IGES, but it doesn't contain any solids.. |
| 00:59.29 | alex_joni | just faces/vertices |
| 01:01.22 | alex_joni | brlcad: http://home.austin.rr.com/reubenrachel/reuben/3D/index.html that also proved usefull along the way |
| 01:03.33 | brlcad | I was hmm'ing because of something else :) |
| 01:04.26 | alex_joni | ok... I'm heading for bed.. |
| 01:04.35 | alex_joni | will look at writing a .sat from this tomorrow |
| 01:05.06 | brlcad | (we have a sat exporter) :) |
| 01:05.27 | brlcad | and what you made wasn't an OFF |
| 01:05.40 | brlcad | what format did you use? ply? |
| 01:05.58 | alex_joni | http://shape.cs.princeton.edu/benchmark/documentation/off_format.html |
| 01:06.28 | alex_joni | might be the wrong OFF format? |
| 01:06.32 | brlcad | ah, different off |
| 01:07.50 | alex_joni | http://people.scs.fsu.edu/~burkardt/data/off/off.html <- this the right one? |
| 01:08.15 | brlcad | that's the same as the other |
| 01:08.22 | brlcad | just better description |
| 01:12.58 | CIA-27 | BRL-CAD: 03brlcad * 10brlcad/ (NEWS src/conv/off/g-off.c): fix crash-on-exit bug during clean-up where the NOP curtree being returned wasn't having its magic number set (causing a bu type check to fail) |
| 01:17.23 | alex_joni | brlcad: is there a guide to install brlcad? |
| 01:17.34 | brlcad | guide? |
| 01:17.46 | alex_joni | binaries vs. cvs ? |
| 01:17.46 | brlcad | there's the INSTALL file |
| 01:18.09 | brlcad | yeah, that file talks about both |
| 01:18.28 | brlcad | http://brlcad.cvs.sourceforge.net/*checkout*/brlcad/brlcad/INSTALL |
| 01:19.03 | brlcad | ~cadcvs |
| 01:19.04 | ibot | To obtain BRL-CAD from anonymous CVS: cvs -d :pserver:anonymous@brlcad.cvs.sourceforge.net:/cvsroot/brlcad login && cvs -d :pserver:anonymous@brlcad.cvs.sourceforge.net:/cvsroot/brlcad checkout -P brlcad |
| 01:19.07 | alex_joni | is 7.8.0 really outdated? |
| 01:19.13 | brlcad | very |
| 01:19.22 | alex_joni | VM it is then :) |
| 01:19.24 | brlcad | though if you're on Windows, that's the easiest |
| 01:19.37 | brlcad | for any other OS, there are much better options |
| 01:19.40 | alex_joni | I have a dapper running on VMware server |
| 01:19.56 | alex_joni | s/dapper/ubuntu 6.06 dapper drake/ |
| 01:20.50 | alex_joni | hmm.. how is sf CVS nowadays? |
| 01:21.30 | brlcad | word of caution if you're just curious, there are tons of command-line tools and a rather non-intuitive google (makes blender look like mspaint in terms of usability) |
| 01:21.30 | brlcad | sf CVS has been great for over a year |
| 01:21.56 | brlcad | they had a slew of issues after svn went on-line and before the cvs servers were upgraded |
| 01:22.11 | alex_joni | we moved away from SF with our CVS (for emc) |
| 01:22.12 | brlcad | but even that was mostly delays for anon users |
| 01:22.27 | brlcad | since then, it's been pretty ideal |
| 01:22.33 | alex_joni | so now it's synched updates for anon? |
| 01:22.37 | brlcad | yeah |
| 01:22.41 | brlcad | for a while |
| 01:23.01 | brlcad | that was part of the upgrade |
| 01:23.37 | brlcad | we'll be moving to svn shortly, have yet to have an issue with sf's svn service for other projects |
| 01:24.35 | alex_joni | I see.. ok, I'm glad it works |
| 01:24.45 | alex_joni | when we moved away it was pretty horrible.. |
| 01:24.55 | alex_joni | had a couple of weekends when it was completely down |
| 01:25.34 | brlcad | yeah |
| 01:25.47 | brlcad | their guys don't work on the weekends :) |
| 01:26.19 | brlcad | and then they had that hardware failure that kept things down for about a week |
| 01:29.05 | alex_joni | <PROTECTED> |
| 01:29.16 | brlcad | is the mesh already solid? |
| 01:29.20 | alex_joni | mesh is probably not the right word.. |
| 01:29.31 | brlcad | i.e. does it form a closed topology |
| 01:29.56 | alex_joni | say I have the obj file I pastebin'ed the last.. |
| 01:30.07 | brlcad | okay |
| 01:31.06 | alex_joni | http://pastebin.ca/778923 |
| 01:31.20 | alex_joni | I don't think that has a closed topology |
| 01:31.30 | alex_joni | it only defines some faces.. |
| 01:38.21 | brlcad | hm, it's just a thin box |
| 01:41.18 | alex_joni | yes |
| 01:41.19 | brlcad | it does close space |
| 01:41.29 | alex_joni | (this is just an example.. I have more complex ones) |
| 01:41.43 | alex_joni | yes, it closes.. but that's only implicit |
| 01:41.53 | brlcad | yes, but that doesn't matter |
| 01:41.56 | alex_joni | (it doesn't reuse the points for the other faces) |
| 01:42.21 | alex_joni | if you say so.. I'll take your word for it :) |
| 01:42.29 | brlcad | that's the importer's job during conversion to determin if you're coming from a file format that doesn't have structure |
| 01:43.01 | brlcad | and even if it doesn't, if you have software that has a shrinkwrap feature, then you can create closure |
| 01:43.18 | alex_joni | anything like that in brlcad? |
| 01:43.29 | brlcad | but in that particular case, since everything does line up neatly, you don't even need that |
| 01:43.52 | brlcad | brl-cad will evaluate the connectivity and stitch things together |
| 01:44.16 | alex_joni | cool.. (I finished installing the doze brlcad, the cvs one is still checking out..) |
| 01:44.36 | brlcad | we don't have shrinkwrapping, that's pretty complicated to code up reliably :) |
| 01:45.11 | brlcad | but we have things that are similar that will check and/or guarantee that the result is either solid geometry, or fail the conversion |
| 01:45.33 | brlcad | (without remeshing) |
| 01:46.06 | brlcad | generalized shrinkwrapping requires remeshing |
| 01:46.07 | alex_joni | I'm fairly confident all the stuff will line up just like this one |
| 01:46.23 | alex_joni | they were solids at one point.. |
| 01:46.24 | brlcad | what's your goal? |
| 01:46.36 | alex_joni | viewing/manipulating them |
| 01:46.40 | brlcad | that's a good sign |
| 01:46.43 | alex_joni | mostly viewing |
| 01:47.01 | alex_joni | so I could live with viewing the meshes only (if only that works..) |
| 01:47.09 | brlcad | if you still have them in a solid format, it would be even better to use a file format that preserves the topological structure |
| 01:47.37 | brlcad | at least one that can, as opposed to one that can't (e.g. iges does both) |
| 01:48.31 | alex_joni | I don't.. if I would it would have been easy |
| 01:54.34 | alex_joni | hrmm.. I did this: I have some crappy freeware that created a iges out of the obj, I converted the iges to g (iges-g complained there's no solid inside, so I had to use -d -3), then I tried to convert it back g-iges, but it's quite empty |
| 01:59.58 | CIA-27 | BRL-CAD: 03brlcad * 10brlcad/src/librt/db_walk.c: if there's no directory pointer, or no callbacks, there's nothing to do |
| 02:03.09 | CIA-27 | BRL-CAD: 03brlcad * 10brlcad/src/conv/iges/g-iges.c: make sure the object may be looked up |
| 02:06.07 | brlcad | alex_joni: try this one http://bzflag.bz/~sean/tmp/gnu-tux/box.iges |
| 02:07.13 | brlcad | that's what I get going obj->ply->g->iges |
| 02:08.51 | alex_joni | I get the same old error.. The File has no faces to stich |
| 02:11.52 | alex_joni | how did you go obj->ply ? |
| 02:48.30 | brlcad | oh, I had a converter local |
| 02:49.01 | brlcad | and we've not gotten around to writing the obj-g just yet |
| 02:50.10 | alex_joni | hmm.. I think I got a bit further |
| 02:50.23 | alex_joni | I have now something that looks like a .g solid |
| 02:50.40 | brlcad | rt -F/dev/Xl to get a quick render |
| 02:51.05 | alex_joni | under doze? |
| 02:51.12 | brlcad | under anything |
| 02:51.18 | brlcad | it's one of our tools/commands |
| 02:51.36 | brlcad | works on the mged command prompt if you have a .g |
| 02:52.18 | alex_joni | http://dsplabs.cs.utt.ro/~juve/blog/index.cgi-files/sandbox/platte2.g |
| 02:53.02 | alex_joni | fb_open: no such device "/dev/X1". |
| 02:53.29 | brlcad | ex ell |
| 02:53.31 | brlcad | Xl |
| 02:53.49 | brlcad | or wgll if you're on windows |
| 02:53.58 | brlcad | er ogll |
| 02:54.25 | brlcad | interesting, something remeshed that box for you |
| 02:54.44 | alex_joni | yes.. I managed to convert the obj to some iges |
| 02:54.51 | brlcad | it's actually a nurbs surface |
| 02:54.55 | alex_joni | then when I did the iges-g it said there's some nurbs there |
| 02:55.04 | alex_joni | and that it's gonna convert it to a slid |
| 02:55.05 | alex_joni | solid |
| 02:56.33 | brlcad | yeah, it's a decent prototype of a "better" interface |
| 02:57.14 | brlcad | it was more of a proof-of-concept, still not anywhere near as useful as mged |
| 02:58.00 | alex_joni | hmm.. g-iges crashes when I try to get an iges out of the .g |
| 02:58.21 | alex_joni | I tried "g-iges platte2.g nn -o tt.igs" |
| 02:58.59 | alex_joni | g-iges: failed to translate nn to IGES format |
| 03:00.36 | brlcad | ahh, yes |
| 03:00.48 | brlcad | the nurbs that it imported as cannot be exported |
| 03:01.26 | alex_joni | think I'll call it a night |
| 03:01.40 | alex_joni | sun's coming up soon.. thanks for all the help & patience |
| 03:01.43 | alex_joni | good night |
| 03:01.50 | brlcad | np |
| 03:02.00 | brlcad | lemme know if can do anything else to help |
| 03:02.18 | alex_joni | I'll sleep it over, and see where I can get :) |
| 03:02.26 | brlcad | someone's always here ;) |
| 03:02.55 | alex_joni | yeah, well.. SWPadnos would be of no use :D |
| 03:02.58 | brlcad | fwiw, the box imported earlier as a bot that could be converted to a solid bot as you had it |
| 03:03.17 | alex_joni | really? |
| 03:03.18 | brlcad | and that g-iges crash is fixed in later version if it's the one I'm thinking of |
| 03:03.40 | alex_joni | any ways to do the bot_>solid bot convert? |
| 03:04.23 | brlcad | run "get botname mode" |
| 03:04.31 | brlcad | does it say surf or volume? |
| 03:04.44 | brlcad | if the edges align, you can just set it to volume |
| 03:05.09 | alex_joni | it says error: botname: not found |
| 03:05.46 | brlcad | botname is the name of your bot.. |
| 03:05.56 | alex_joni | oh :D I have one? |
| 03:06.05 | brlcad | yes |
| 03:06.13 | brlcad | tops to see the top-level geometry |
| 03:06.19 | brlcad | l objectname to see that object |
| 03:06.26 | brlcad | (textually) |
| 03:06.35 | brlcad | (and that's another "ell") |
| 03:07.06 | brlcad | if it's a bot, it'll look like: |
| 03:07.22 | brlcad | mged> l ply_bot |
| 03:07.23 | brlcad | ply_bot: Bag of triangles (BOT) 36 vertices, 12 faces (unoriented) This is a surface with no volume face 0: (408000 283000 10000), (408000 283000 0), (408000 -283000 0) |
| 03:07.36 | alex_joni | iges_drawing: n-Manifold Geometry solid (NMG) maxindex=336 |
| 03:08.05 | brlcad | what's that from? |
| 03:08.11 | alex_joni | l iges_drawing |
| 03:08.20 | alex_joni | tops said 'iges_drawing' |
| 03:08.22 | brlcad | i mean, where did iges_drawing come from |
| 03:08.30 | brlcad | iges-g with .. some option |
| 03:08.44 | alex_joni | think I ran it without |
| 03:09.30 | brlcad | default would be ideal |
| 03:09.41 | brlcad | looks like you did -p or something |
| 03:10.01 | alex_joni | -d -3 |
| 03:10.22 | brlcad | hm, shouldn't need either of those |
| 03:10.31 | alex_joni | This IGES file contains drawing entities, but no solid model entities. You may |
| 03:10.31 | alex_joni | convert the drawing to BRL-CAD by 'iges-g -d -o file.g PLATTE1.IGS'. Note that the resulting |
| 03:10.32 | brlcad | is it actually a drawing |
| 03:10.34 | alex_joni | BRL-CAD object will be a 2D drawing, not a solid object. You might also try the |
| 03:10.37 | alex_joni | '-3' option to get 3D drawings |
| 03:10.45 | brlcad | ah |
| 03:11.00 | brlcad | drawings suck |
| 03:12.40 | brlcad | try running: g-nmg -b -o file2.g file.g iges_drawing |
| 03:12.52 | alex_joni | I guess I'll bother you about the obj->ply->g converter sometimes then |
| 03:13.12 | alex_joni | (don't have g-nmg on the doze box) |
| 03:13.44 | alex_joni | (still building the CVS version) |
| 03:13.58 | brlcad | http://bzflag.bz/~sean/tmp/ply/ |
| 03:14.10 | brlcad | ahh, yeah |
| 03:14.33 | brlcad | that windows build only has about 25% of the tools |
| 03:15.24 | brlcad | gcc -I. -o obj-ply *ply*.c |
| 03:16.39 | alex_joni | I'll do that some other time.. now really going to bed (5am here) |
| 03:20.22 | alex_joni | thanks & goodnight |
| 03:21.57 | brlcad | cya, have a good night |
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| 11:47.42 | butti | good morning |
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| 16:54.01 | ``Erik | hah |
| 16:54.08 | ``Erik | the last starfighter is on scifi |
| 17:10.30 | brlcad | heh, tis what I was watching too |
| 17:15.02 | alex_joni | brlcad: hi.. managed to write a converter for my needs (it outputs obj correctly) |
| 17:19.50 | brlcad | cool |
| 17:20.32 | alex_joni | do you happen to know if obj has support for multiple things inside? |
| 17:20.51 | alex_joni | (like setting up a scene with a couple objects?) |
| 17:21.34 | brlcad | alex_joni: yes, obj does |
| 17:21.42 | brlcad | they just follow one after the other |
| 17:21.46 | alex_joni | ok, cool.. will finish reading the docs then :) |
| 17:22.13 | brlcad | g line followed by some # v lines and # f lines, repeated |
| 17:22.27 | brlcad | with optional vn of course and a few other |
| 17:23.34 | alex_joni | gotcha |
| 17:32.01 | ``Erik | man those graphics were chintzy :D |
| 17:40.02 | Z80-Boy | brlcad: would be fun to model this in BRL-CAD http://goodnesstruthandbeauty.files.wordpress.com/2007/06/escher.jpg |
| 17:40.35 | Z80-Boy | Or this http://britton.disted.camosun.bc.ca/escher/waterfall.jpg |
| 17:41.50 | Z80-Boy | They already did it in LEGO http://3quarksdaily.blogs.com/3quarksdaily/images/lego_relativity_1.jpg |
| 17:42.31 | alex_joni | Z80-Boy: http://www.gravestmor.com/strips/escher%20lego.jpg |
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| 19:03.01 | alex_joni | brlcad: around? |
| 19:20.49 | ``Erik | more of a square, actually |
| 19:22.38 | alex_joni | ``Erik: that's with smoothing turned off |
| 19:23.31 | ``Erik | or a really BAD tesselation |
| 19:29.33 | alex_joni | heh |
| 19:32.57 | butti | hello boys |
| 19:33.41 | butti | Just want to see if you are fine |
| 19:53.34 | alex_joni | brlcad: I managed to put more than one component into the .obj, the problem is that the components I have aren't aligned. |
| 19:53.50 | alex_joni | I guess there's no way to specify position and orientation of a .obj group |
| 20:07.27 | ``Erik | ".obj group"? |
| 20:07.54 | alex_joni | there's a thing called group inside .obj (g ..) |
| 20:08.01 | alex_joni | and you can have more than one |
| 20:13.41 | CIA-27 | BRL-CAD: 03brlcad * 10brlcad/src/librt/nmg_misc.c: speling |
| 20:23.55 | Z80-Boy | brlcad: I just made a brick chimney. I think making models of brick chimneys in BRL-CAD won't be difficult because you can fill all the mortar in at once by subtracting the bricks from a simple shape |
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| 22:18.36 | poolio | allo bob |
| 22:21.19 | tarzeau | hi |
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| 23:24.59 | brlcad | howdy howdy |
| 23:32.57 | yukonbob | brlcad: what the bug? |
| 23:48.44 | poolio | It's an oversized cockroach |
