Mitesh (Dec 07 2017 at 15:03): Mitesh (Dec 07 2017 at 15:03):@Sean Can you please tell me which all parts are falling apart in my task "Model a chess rook " that you checked earlier.
I abandoned it and thought that it would be better to submit appleseed task1 first and meanwhile I can work out on my modelling task issues
Sean (Dec 07 2017 at 15:32):@Mitesh I did in the screenshot. That's a cross-section view. Notice how parts in the interior are open and come together at a singular point. You probably should make the interior solid, or at least insure everything connects at more than a point.
Mitesh (Dec 07 2017 at 15:36):Can you pls send me the screenshot? ...I couldn't open the task messages
Sean (Dec 07 2017 at 15:37):why not?
Jeff Sieu (Dec 07 2017 at 16:27):im not sure if its a bug in version 7.26.4 but every once in a while one of my objects get corrupted and become another shape in the database, while preserving its name
Jeff Sieu (Dec 07 2017 at 16:27):this problem has not occured while i was using 7.26.0..
Sean (Dec 07 2017 at 16:29):@Jeff Sieu does it stay that way if you close and reopen? does it happen after a particular set of commands or GUI actions?
Sean (Dec 07 2017 at 16:29):we've not heard of any other reports (yet)
Sean (Dec 07 2017 at 16:29):certainly haven't seen that myself...
Jeff Sieu (Dec 07 2017 at 16:31):Yes, it stays that way after I close and reopen. I'm not sure of the particular steps to reproduce it, as I've only had this problem occur twice so far.
Sean (Dec 07 2017 at 16:32):there is a bug report task, if you can find a way to reliably reproduce the steps
Sean (Dec 07 2017 at 16:33):if it's clear what is wrong, like you open the db and something is clearly wrong, that's "reliable" too -- but have to see what you're referring to -- can you show a screenshot of the issue?
Mitesh (Dec 07 2017 at 16:34):why not?
I got the screenshot....I opened my mail and then GCI mail of the task
Jeff Sieu (Dec 07 2017 at 16:43):Okay, I'll see if I can reproduce the bug.
Jeff Sieu (Dec 07 2017 at 16:46):I don't have a screenshot of it, but what happened was: Supposed I have primitives a and b. While I'm doing other stuff like selecting, creating other primitives (not touching a or b), at some point the shape of a becomes that of b -- an exact replica. Then the original shape that a represents just vanishes.
Jeff Sieu (Dec 07 2017 at 16:49):As a side note, I have submitted my current task for review ^^
Naseef (Dec 07 2017 at 18:50):pasted image
The Original iPod, Designed in 2001 with BRL-CAD
Mitesh (Dec 08 2017 at 09:35):Please tell me how to get a cross-section view?
Sean (Dec 08 2017 at 09:42):@Mitesh rt has a -k cutting plane option. Run "man rt" to read about it (or "brlman rt" if your manpath isn't set), but basically it takes a plane equation. For example rt -k1,0,0,0 will cut along the X-axis.
Mitesh (Dec 08 2017 at 09:43):Can I used the method that was shown in tutorial?
Mitesh (Dec 08 2017 at 09:44):subtracting cube from rook.r.....
Mitesh (Dec 08 2017 at 09:46):i got this....is it ok?halfrook.PNG
Jeff Sieu (Dec 08 2017 at 09:48):oh what
Jeff Sieu (Dec 08 2017 at 09:49):all this time i've been creating a new rpp then a new comb that subtracts this rpp to get a cross section
Jeff Sieu (Dec 08 2017 at 09:49):oops
Mitesh (Dec 08 2017 at 09:50):i think it should be making a new comb to subtract one rpp from another
Sean (Dec 08 2017 at 09:52):@Jeff Sieu hehe
Sean (Dec 08 2017 at 09:53):@Mitesh using a cutting rpp is perfectly fine too. notice how in that cutaway cross-section, the second torus is only touching at singular points -- that means it's not attached and would slide down the shaft if printed. The top torus is also not connected, but it's between two other things that are so it would merely spin in place.
Sean (Dec 08 2017 at 09:54):at least, maybe -- it looks like the top one might actually be attached on the top side -- would have to zoom in for more detail
Mitesh (Dec 08 2017 at 09:55):Okk i will make the changes and submit.
Thank you so much.
Jeff Sieu (Dec 08 2017 at 09:59):I've also submitted my task hehe
Mitesh (Dec 08 2017 at 10:46):i have also submitted the task with the changes as required
Naseef (Dec 15 2017 at 10:48):Studying for the Science tests tomorrow, Will do the task when I got some free time.
Jeff Sieu (Dec 15 2017 at 10:51):Good luck for your tests!
caleb parks (Dec 20 2017 at 03:41):I been having a problem where mged will crash when I try to open the combination editor or the Attribute editor
Sean (Dec 20 2017 at 03:47):@caleb parks that usually happens when you make an bad edit to some combination (the gui is unforgiving) -- does it happen on any model or just one you're working on? post your .g file here and I can take a look
caleb parks (Dec 20 2017 at 03:51):it happens on any file. here is a new one test.g
Sean (Dec 20 2017 at 03:59):ah, well then that's very different.. that sounds like a problem with your build or installation. is this a brl-cad you compiled?
caleb parks (Dec 20 2017 at 04:00):yes it is compiled from source
Sean (Dec 20 2017 at 04:02):using what cmake options?
Sean (Dec 20 2017 at 04:02):and what platform?
caleb parks (Dec 20 2017 at 04:04):I am on mac and I used these cmake options
cmake .. -DBRLCAD_BUNDLED_LIBS=ON -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=/usr/local/brlcad/
Sean (Dec 20 2017 at 04:07):hm, did you install?
Sean (Dec 20 2017 at 04:07):or are you running from the build dir?
caleb parks (Dec 20 2017 at 04:07):I installed it
Sean (Dec 20 2017 at 04:07):and when you run mged, how to you run it?
caleb parks (Dec 20 2017 at 04:10):I type "mged [filename]" into a terminal without the quotes and where [filename] is the file I want to open in mged
Sean (Dec 20 2017 at 04:10):if you run "which mged" does it say /usr/local/brlcad/bin/mged ?
caleb parks (Dec 20 2017 at 04:11):yes
Sean (Dec 20 2017 at 04:11):then doubly bizzare
Sean (Dec 20 2017 at 04:12):lets see if we can catch the crash in a debugger
Sean (Dec 20 2017 at 04:12):run "lldb /usr/local/brlcad/bin/mged"
Sean (Dec 20 2017 at 04:12):or "lldb /usr/local/brlcad/bin/mged [filename]"
Sean (Dec 20 2017 at 04:13):then open the combination editor
Sean (Dec 20 2017 at 04:13):if it crashes, you'll be at an lldb prompt
Sean (Dec 20 2017 at 04:13):type "bt" at that prompt and paste it here
caleb parks (Dec 20 2017 at 04:18):after I run that first command it doesn't run mged
caleb parks (Dec 20 2017 at 04:20):never mind I had to tell it to run the program
caleb parks (Dec 20 2017 at 04:21):here is what bt gave me:
__pthread_kill + 10
frame #1: 0x00007fff9a784457 libsystem_pthread.dylibpthread_kill + 90abort + 129
frame #3: 0x00007fff9a5fc592 libsystem_c.dylibabort_report_np + 181__chk_fail + 48
frame #5: 0x00007fff9a622ef8 libsystem_c.dylib__chk_fail_overflow + 16__strcpy_chk + 83
frame #7: 0x000000010f49d2f1 libitcl.3.dylibItcl_CreateArg + 273Itcl_CreateArgList + 723
frame #9: 0x000000010f49a187 libitcl.3.dylibItcl_CreateMemberCode + 119Itcl_CreateMemberFunc + 212
frame #11: 0x000000010f49a692 libitcl.3.dylibItcl_CreateMethod + 226Itcl_ClassConstructorCmd + 489
frame #13: 0x00000001121aca22 libtcl.8.5.dylibTclEvalObjvInternal + 1218TclExecuteByteCode + 33595
frame #15: 0x0000000112202870 libtcl.8.5.dylibTclCompEvalObj + 224TclEvalObjEx + 125
frame #17: 0x000000010f4a2770 libitcl.3.dylibItcl_ClassCmd + 800TclEvalObjvInternal + 1218
frame #19: 0x00000001121ad874 libtcl.8.5.dylibTclEvalEx + 2612Tcl_EvalEx + 26
frame #21: 0x000000011221cd57 libtcl.8.5.dylibTcl_FSEvalFileEx + 535Tcl_SourceObjCmd + 167
frame #23: 0x00000001121aca22 libtcl.8.5.dylibTclEvalObjvInternal + 1218Tcl_EvalObjv + 60
frame #25: 0x00000001121ae4e4 libtcl.8.5.dylibTclEvalObjEx + 388Tcl_NamespaceObjCmd + 4961
frame #27: 0x00000001121aca22 libtcl.8.5.dylibTclEvalObjvInternal + 1218TclExecuteByteCode + 33595
frame #29: 0x000000011223d120 libtcl.8.5.dylibTclObjInterpProcCore + 816TclEvalObjvInternal + 1218
frame #31: 0x00000001121ad874 libtcl.8.5.dylibTclEvalEx + 2612Tcl_VarEvalVA + 167
frame #33: 0x00000001121aefe0 libtcl.8.5.dylibTcl_VarEval + 144Itcl_FindClass + 206
frame #35: 0x000000010f4a0e3f libitcl.3.dylibItcl_ClassInheritCmd + 543TclEvalObjvInternal + 1218
frame #37: 0x00000001121f876b libtcl.8.5.dylibTclExecuteByteCode + 33595TclCompEvalObj + 224
frame #39: 0x00000001121ae3dd libtcl.8.5.dylibTclEvalObjEx + 125Itcl_ClassCmd + 800
frame #41: 0x00000001121aca22 libtcl.8.5.dylibTclEvalObjvInternal + 1218TclEvalEx + 2612
frame #43: 0x00000001121ace3a libtcl.8.5.dylibTcl_EvalEx + 26Tcl_FSEvalFileEx + 535
frame #45: 0x00000001121be6e7 libtcl.8.5.dylibTcl_SourceObjCmd + 167TclEvalObjvInternal + 1218
frame #47: 0x00000001121acc9c libtcl.8.5.dylibTcl_EvalObjv + 60TclEvalObjEx + 388
frame #49: 0x00000001122297a1 libtcl.8.5.dylibTcl_NamespaceObjCmd + 4961TclEvalObjvInternal + 1218
frame #51: 0x00000001121f876b libtcl.8.5.dylibTclExecuteByteCode + 33595TclObjInterpProcCore + 816
frame #53: 0x000000010f4a422e libitcl.3.dylibItcl_EvalArgs + 414ItclHandleStubCmd + 244
frame #55: 0x00000001121aca22 libtcl.8.5.dylibTclEvalObjvInternal + 1218TclExecuteByteCode + 33595
frame #57: 0x000000011223d120 libtcl.8.5.dylibTclObjInterpProcCore + 816TclEvalObjvInternal + 1218
frame #59: 0x00000001121acc9c libtcl.8.5.dylibTcl_EvalObjv + 60TclEvalObjEx + 388
frame #61: 0x000000011223c7a8 libtcl.8.5.dylibTcl_UplevelObjCmd + 184TclEvalObjvInternal + 1218
frame #63: 0x00000001121f876b libtcl.8.5.dylibTclExecuteByteCode + 33595TclObjInterpProcCore + 816
frame #65: 0x00000001121aca22 libtcl.8.5.dylibTclEvalObjvInternal + 1218TclEvalObjvInternal + 1129
frame #67: 0x00000001121f876b libtcl.8.5.dylibTclExecuteByteCode + 33595TclCompEvalObj + 224
frame #69: 0x00000001121ae3dd libtcl.8.5.dylibTclEvalObjEx + 125TkInvokeMenu + 471
frame #71: 0x00000001123175a8 libtk.8.5.dylibMenuWidgetObjCmd + 968TclEvalObjvInternal + 1218
frame #73: 0x00000001121acc9c libtcl.8.5.dylibTcl_EvalObjv + 60TclEvalObjEx + 388
frame #75: 0x000000011223c7a8 libtcl.8.5.dylibTcl_UplevelObjCmd + 184TclEvalObjvInternal + 1218
frame #77: 0x00000001121f876b libtcl.8.5.dylibTclExecuteByteCode + 33595TclObjInterpProcCore + 816
frame #79: 0x00000001121aca22 libtcl.8.5.dylibTclEvalObjvInternal + 1218TclEvalEx + 2612
frame #81: 0x00000001121ace3a libtcl.8.5.dylibTcl_EvalEx + 26Tk_BindEvent + 4360
frame #83: 0x00000001122e203a libtk.8.5.dylibTkBindEventProc + 346Tk_HandleEvent + 1148
frame #85: 0x00000001122efcae libtk.8.5.dylibWindowEventProc + 110Tcl_ServiceEvent + 129
frame #87: 0x000000011222d85c libtcl.8.5.dylibTcl_DoOneEvent + 156event_check + 90
frame #89: 0x000000010005548c mgedmain + 9052start + 1
frame #91: 0x00007fff9a568235 libdyld.dylibstart + 1 Sean (Dec 20 2017 at 04:28):hm, it looks like some sort of validation debug check in itcl is getting triggered
Sean (Dec 20 2017 at 04:29):type "up" 6 times and "where"
caleb parks (Dec 20 2017 at 04:31):where is not a recognized command
Sean (Dec 20 2017 at 04:33):have you used a debugger before?
caleb parks (Dec 20 2017 at 04:33):no
Sean (Dec 20 2017 at 04:33):I just need to know which frame/function you're in right now
caleb parks (Dec 20 2017 at 04:34):frame #6: 0x00007fff9a623145 libsystem_c.dylib__strcpy_chk + 83
libsystem_c.dylib__memccpy_chk
Sean (Dec 20 2017 at 04:37):okay, so up one more time
Sean (Dec 20 2017 at 04:38):then "p argv"
caleb parks (Dec 20 2017 at 04:39):I got this:
warning: could not execute support code to read Objective-C class data in the process. This may reduce the quality of type information available.
error: use of undeclared identifier 'argv'
Sean (Dec 20 2017 at 04:40):what we're doing is going up the call stack and taking a look at things at the point that everything went wrong
Sean (Dec 20 2017 at 04:40):hm
Sean (Dec 20 2017 at 04:40):"up" again -- which frame does it say now?
caleb parks (Dec 20 2017 at 04:41):frame #8: 0x000000010f49b3c3 libitcl.3.dylib`Itcl_CreateArgList + 723
Sean (Dec 20 2017 at 04:41):"p arglist"
caleb parks (Dec 20 2017 at 04:42):error: use of undeclared identifier 'arglist'
Sean (Dec 20 2017 at 04:42):then assuming that fails: "p decl"
caleb parks (Dec 20 2017 at 04:43):error: use of undeclared identifier 'decl'
Sean (Dec 20 2017 at 04:43):damnits
Sean (Dec 20 2017 at 04:44):okay, so I think the next step is to recompile and reinstall with -DCMAKE_BUILD_TYPE=Debug
Sean (Dec 20 2017 at 04:44):something isn't right, but there's not enough info to figure it out like this
Sean (Dec 20 2017 at 04:44):debug build will either just work (quite possible) or we'll get better debug info
Sean (Dec 20 2017 at 04:45):so you can quit lldb
Sean (Dec 20 2017 at 04:45):one more thing you can run (on the terminal command line) is: otool -L /usr/local/brlcad/bin/mged
caleb parks (Dec 20 2017 at 04:49):this is what I got from that command:
/usr/local/brlcad/bin/mged:
@rpath/libtclcad.20.dylib (compatibility version 20.0.0, current version 20.0.1)
@rpath/libged.20.dylib (compatibility version 20.0.0, current version 20.0.1)
@rpath/libwdb.20.dylib (compatibility version 20.0.0, current version 20.0.1)
@rpath/libdm.20.dylib (compatibility version 20.0.0, current version 20.0.1)
@rpath/libitk.3.dylib (compatibility version 3.0.0, current version 3.4.0)
@rpath/libtermio.20.dylib (compatibility version 20.0.0, current version 20.0.1)
@rpath/libicv.20.dylib (compatibility version 20.0.0, current version 20.0.1)
@rpath/libnetpbm.dylib (compatibility version 0.0.0, current version 0.0.0)
@rpath/libanalyze.20.dylib (compatibility version 20.0.0, current version 20.0.1)
@rpath/libclipper.4.dylib (compatibility version 4.0.0, current version 4.6.0)
@rpath/librt.20.dylib (compatibility version 20.0.0, current version 20.0.1)
@rpath/libgdiam.dylib (compatibility version 0.0.0, current version 0.0.0)
@rpath/libvds.1.dylib (compatibility version 1.0.0, current version 1.0.1)
@rpath/libbrep.20.dylib (compatibility version 20.0.0, current version 20.0.1)
@rpath/libopenNURBS.2012.10.245.dylib (compatibility version 0.0.0, current version 2012.10.245)
@rpath/libp2t.1.dylib (compatibility version 1.0.0, current version 1.0.1)
@rpath/libtinycthread.dylib (compatibility version 0.0.0, current version 0.0.0)
@rpath/liblz4.dylib (compatibility version 0.0.0, current version 0.0.0)
@rpath/libnmg.dylib (compatibility version 0.0.0, current version 0.0.0)
@rpath/libbg.20.dylib (compatibility version 20.0.0, current version 20.0.1)
@rpath/libitcl.3.dylib (compatibility version 3.0.0, current version 3.4.0)
@rpath/libfb.20.dylib (compatibility version 20.0.0, current version 20.0.1)
@rpath/libpkg.20.dylib (compatibility version 20.0.0, current version 20.0.1)
/opt/X11/lib/libGLU.1.dylib (compatibility version 5.0.0, current version 5.1.0)
/opt/X11/lib/libGL.1.dylib (compatibility version 4.0.0, current version 4.0.0)
@rpath/libbn.20.dylib (compatibility version 20.0.0, current version 20.0.1)
@rpath/libbu.20.dylib (compatibility version 20.0.0, current version 20.0.1)
@rpath/libregex.1.dylib (compatibility version 1.0.0, current version 1.0.4)
/usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 1238.60.2)
@rpath/libtcl.8.5.dylib (compatibility version 8.5.0, current version 8.5.19)
@rpath/libtk.8.5.dylib (compatibility version 8.5.0, current version 8.5.0)
@rpath/libpng16.16.dylib (compatibility version 16.0.0, current version 16.29.0)
@rpath/libz.1.dylib (compatibility version 1.0.0, current version 1.2.11)
/opt/X11/lib/libXrender.1.dylib (compatibility version 5.0.0, current version 5.0.0)
/System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation (compatibility version 150.0.0, current version 1349.8.0)
/System/Library/Frameworks/IOKit.framework/Versions/A/IOKit (compatibility version 1.0.0, current version 275.0.0)
/opt/X11/lib/libSM.6.dylib (compatibility version 7.0.0, current version 7.1.0)
/opt/X11/lib/libICE.6.dylib (compatibility version 10.0.0, current version 10.0.0)
/opt/X11/lib/libX11.6.dylib (compatibility version 10.0.0, current version 10.0.0)
/opt/X11/lib/libXext.6.dylib (compatibility version 11.0.0, current version 11.0.0)
/opt/X11/lib/libXi.6.dylib (compatibility version 8.0.0, current version 8.0.0)
@rpath/libtermlib.1.dylib (compatibility version 1.0.0, current version 1.7.1)
Sean (Dec 20 2017 at 04:51):that all seems to be fine,
Sean (Dec 20 2017 at 04:51):give the debug build a test
caleb parks (Dec 20 2017 at 04:55):got these error when trying to build the debug build:
In file included from /Users/RPS/Documents/BRL-CAD/brlcad-svn-trunk/src/libbu/uuid.c:25:
/Users/RPS/Documents/BRL-CAD/brlcad-svn-trunk/include/bu/uuid.h:58:28: error:
static array size is a C99 feature [-Werror,-Wc99-extensions]
bu_uuid_create(uint8_t uuid[STATIC_ARRAY(16)], size_t nbytes, const uint...
^
/Users/RPS/Documents/BRL-CAD/brlcad-svn-trunk/include/bu/uuid.h:58:113: error:
static array size is a C99 feature [-Werror,-Wc99-extensions]
...nbytes, const uint8_t *bytes, const uint8_t namespace_uuid[STATIC_ARRAY(...
^
/Users/RPS/Documents/BRL-CAD/brlcad-svn-trunk/include/bu/uuid.h:94:34: error:
static array size is a C99 feature [-Werror,-Wc99-extensions]
bu_uuid_encode(const uint8_t uuid[STATIC_ARRAY(16)], uint8_t cp[STATIC_A...
^
/Users/RPS/Documents/BRL-CAD/brlcad-svn-trunk/include/bu/uuid.h:94:64: error:
static array size is a C99 feature [-Werror,-Wc99-extensions]
bu_uuid_encode(const uint8_t uuid[STATIC_ARRAY(16)], uint8_t cp[STATIC_A...
^
/Users/RPS/Documents/BRL-CAD/brlcad-svn-trunk/include/bu/uuid.h:103:44: error:
static array size is a C99 feature [-Werror,-Wc99-extensions]
bu_uuid_decode(const char *cp, uint8_t uuid[STATIC_ARRAY(16)]);
^
/Users/RPS/Documents/BRL-CAD/brlcad-svn-trunk/src/libbu/uuid.c:45:28: error:
static array size is a C99 feature [-Werror,-Wc99-extensions]
bu_uuid_create(uint8_t uuid[STATIC_ARRAY(16)], size_t nbytes, const uint...
^
/Users/RPS/Documents/BRL-CAD/brlcad-svn-trunk/src/libbu/uuid.c:45:113: error:
static array size is a C99 feature [-Werror,-Wc99-extensions]
...nbytes, const uint8_t *bytes, const uint8_t namespace_uuid[STATIC_ARRAY(...
^
/Users/RPS/Documents/BRL-CAD/brlcad-svn-trunk/src/libbu/uuid.c:113:34: error:
static array size is a C99 feature [-Werror,-Wc99-extensions]
bu_uuid_encode(const uint8_t uuid[STATIC_ARRAY(16)], uint8_t cp[STATIC_A...
^
/Users/RPS/Documents/BRL-CAD/brlcad-svn-trunk/src/libbu/uuid.c:113:64: error:
static array size is a C99 feature [-Werror,-Wc99-extensions]
bu_uuid_encode(const uint8_t uuid[STATIC_ARRAY(16)], uint8_t cp[STATIC_A...
^
/Users/RPS/Documents/BRL-CAD/brlcad-svn-trunk/src/libbu/uuid.c:124:44: error:
static array size is a C99 feature [-Werror,-Wc99-extensions]
bu_uuid_decode(const char *cp, uint8_t uuid[STATIC_ARRAY(16)])
^
10 errors generated.
make[2]: [src/libbu/CMakeFiles/libbu-obj.dir/uuid.c.o] Error 1
make[1]: [src/libbu/CMakeFiles/libbu-obj.dir/all] Error 2
caleb parks (Dec 20 2017 at 06:07):the combination editor opens when mged is compiled as a debug build
Naseef (Dec 23 2017 at 17:23):I didn't see the "Screenshot of command window" part when I read the description. I think I have to start again from the beginning, LOL.
Jeff Sieu (Dec 23 2017 at 17:59):LOL are you doing the tutorial
Naseef (Dec 23 2017 at 18:07):I claimed that because I had exams and won't be able to do coding task for a while.
Tutorials are fun and so easy, Have you done those?
Jeff Sieu (Dec 23 2017 at 18:11):Yeah I've done the tutorials. Pretty fun to see a couple of commands become 3D objects. How were your exams?
Daniel Rossberg (Dec 23 2017 at 19:23):Naseef, you should have the .g files you created. Load them, do a ray-trace (rt), type your name in the command window, and make the screen shot.
Naseef (Dec 23 2017 at 19:46):But, I have modified them in later tasks, Is that Okay?
Daniel Rossberg (Dec 23 2017 at 21:13):Well, submit what you have.
Naseef (Dec 23 2017 at 23:08):roger
caleb parks (Dec 24 2017 at 18:46):where are the sample databases?
Amritpal Singh (Dec 24 2017 at 18:49):Sample databases are located in share/db folder.
Amritpal Singh (Dec 24 2017 at 18:50):@caleb parks
Mitesh (Jan 01 2018 at 18:21):@Daniel Rossberg what is difference between oed and sed command?
Daniel Rossberg (Jan 02 2018 at 11:50):sed is for editing/changing a primitive, e.g. the points of an arb8, the height of a cone, etc..
oed is for editing/changing the matrix of an element in a combination. If you add something to a combination there is always a transformation matrix associated to it. The default is the identity matrix, but you can change it.
Mitesh (Jan 02 2018 at 11:58):okk got that
Mitesh (Jan 02 2018 at 16:54):I am getting this error when tried to run g-obj command to export a .obj fileerror.PNG
Sean (Jan 02 2018 at 16:56):@Mitesh that's because you attempted to export a 'brep' object, which cannot (yet) be exported as triangles (which the obj format wants)
Sean (Jan 02 2018 at 16:56):we have code for that, but it's not hooked up
Sean (Jan 02 2018 at 16:57):could be a half dozen tasks to investigate and try and get export of brep working... ;)
Mitesh (Jan 02 2018 at 17:01):could be a half dozen tasks to investigate and try and get export of brep working... ;)
sorry i din't get this
Sean (Jan 02 2018 at 17:01):I mean if you or someone else wanted to try and get g-obj working on a brep object, that could probably be added as a set of tasks
Sean (Jan 02 2018 at 17:01):a mini project
Sean (Jan 02 2018 at 17:02):like the GUI tasks or the chess pieces
Mitesh (Jan 02 2018 at 17:03):what exactly are Brep object?
Sean (Jan 02 2018 at 17:04):when you were modeling, there are different types of entities like ellipsoids (ell), truncated cones (tgc), combinations (comb), torus (tor), ...
Sean (Jan 02 2018 at 17:05):there are a handful in brl-cad and other CAD systems that are not simple like ell .. but complex shapes. these include triangle meshes (bot) and nurbs boundary representation objects (brep)
Sean (Jan 02 2018 at 17:05):and a few others
Mitesh (Jan 02 2018 at 17:05):okk.
Sean (Jan 02 2018 at 17:05):this page talks about it a bit: https://brlcad.org/d/node/82
Mitesh (Jan 02 2018 at 17:06):is there any docuementation that tells how the g-obj works?
Jeff Sieu (Jan 02 2018 at 17:07):could be a half dozen tasks to investigate and try and get export of brep working... ;)
seems interesting to me, i wouldn't mind having a go but I'm not sure if I'd be able to pull it off :)
Sean (Jan 02 2018 at 17:07):it is a very much an "advanced" topic
Sean (Jan 02 2018 at 17:08):I mean, c'mon... who doesn't already know about "non-uniform basis-spline surface boundary representation geometry" :)
Mitesh (Jan 02 2018 at 17:09):I am not very good in programming skills as you would have seen earlier
Sean (Jan 02 2018 at 17:10):@Mitesh everyone has to start somewhere -- I wouldn't suggest starting with a brep/nurbs task but I also would still encourage you to try other coding tasks. I'm writing up some new ones as we speak.
Sean (Jan 02 2018 at 17:11):a fun way to get started is to try and model with code
Mitesh (Jan 02 2018 at 17:11):okk i will give them a try...
Sean (Jan 02 2018 at 17:12):just take it slowly, read a lot, and ask questions when you get stuck
Mitesh (Jan 02 2018 at 17:12):actually i am thorough with c++ but when it comes to modelling with code....it feels little hard
Mitesh (Jan 02 2018 at 17:12):just take it slowly, read a lot, and ask questions when you get stuck
sure
Siddharth (Jan 03 2018 at 08:06):Hey Mentor,
I'm working on the task Design a single gearwheel in LibreCAD, import it to BRL-CAD and extrude it to make it 3D.
I couldn't find the gear plugin
Siddharth (Jan 03 2018 at 08:07):
Sean (Jan 03 2018 at 08:08):a doubt is something you are unsure of ... how is that a doubt?? I think you're using the wrong word. :)
Sean (Jan 03 2018 at 08:10):I'm am uncertain about libreCAD plugins myself but a quick search of the web shows https://github.com/LibreCAD/LibreCAD/tree/master/plugins/gear
Sean (Jan 03 2018 at 08:10):implies you're probably using an older version (quite likely if you didn't compile it yourself)
Sean (Jan 03 2018 at 08:11):or possibly there's some build-time configuration for enabling that particular plugin -- you'd have to go back to your compile+install of librecad to see if it's there, if it was compiled, if it was installed.
Siddharth (Jan 03 2018 at 08:24):I didn't compile it, I installed the precompiled version available on Sourceforge
Sean (Jan 03 2018 at 08:25):well there you go, that's why
Armin (LordOfBikes) (Jan 03 2018 at 08:28):@Siddharth you can use the NightlyBuild version available on sourceforge https://sourceforge.net/projects/librecad/files/Windows/NightlyBuilds/master/
Don't worry about "alpha" in the name, it is as stable as the stable release versions
Lucas Prieels (Jan 03 2018 at 08:49):@LordOfBikes Hey! I don't know if you remember but you corrected my task which was compiling LibreCAD from source, but it didn't work because there was something wrong for mac. You also ask me to keep the version I compiled in case you solve this during GCi, do you have any news about it?
Siddharth (Jan 03 2018 at 08:51):@LordOfBikes Thanks a lot, it worked
Armin (LordOfBikes) (Jan 03 2018 at 08:55):Thanks @Lucas Prieels for asking. I remember, but I have no news here. We don't have an active Mac developer yet who can approve your observations. I have access to a Mac Mini, but haven't found the time yet to check this myself. But it's still on the TODO list :wink:
Armin (LordOfBikes) (Jan 03 2018 at 08:55):Fine @Siddharth you're welcome!
Lucas Prieels (Jan 03 2018 at 08:57):Alright, no problem! I'm normally going to access to a linux computer in a few days, so I'll try again
Siddharth (Jan 03 2018 at 09:07):I used the command dxf-g gear.dxf gear.g and got the following result, which I think Converted successfully but I can't extrude in MGED extrude-error.PNG gear-conversion.PNG
Mitesh (Jan 11 2018 at 03:54):The hyp doesn't get raytraced when we add new primitives....is it a bug?hyp.PNG
Rahil Malik (Jan 11 2018 at 04:26):Probably. Because even i tried using that and had saame problem ..but no one replied ..so i just went on using other primitives
Mitesh (Jan 11 2018 at 05:13):okk...its a bug...there is also a task to correct this bug..
Last updated: Jan 10 2025 at 00:48 UTC