[brlcad-tracker] [ brlcad-Support Requests-3547665 ] g-acad Exporter not working for me

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Support Requests item #3547665, was opened at 2012-07-23 10:17
Message generated for change (Comment added) made by ggkrupp
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Category: Geometry Conversion
Group: None
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: G. G. Krupp (ggkrupp)
Assigned to: Nobody/Anonymous (nobody)
Summary: g-acad Exporter not working for me

Initial Comment:
I am new to BRL-CAD but after working my way through several of the tutorials I am convinced that it is a powerful tool that would be useful to me if I can export models in the ACAD facet file format.  To that end, I tried to export the goblet made in Lesson 6 of the tutorial using the g-acad.exe utility without success.  I then went for a more simple case by loading the \"booleab-ops.g\" database.  I tried to export object \"c\" from that database using the ACAD exporter but it also failed.  The screenshot from the second export attempt is attached.

Some pertinent details include:
OS: Windows 7
BRL-CAD Version: 7.20.2

The one other interesting fact is that the goblet seem to chunk away at the various parts of the model for several minutes before giving me the \"g-acad.exe has stopped working\" dialog box but the boolean-ops export crashed almost immediately.

Am I doing something wrong?

Thanks,
Gary

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>Comment By: G. G. Krupp (ggkrupp)
Date: 2012-07-25 03:31

Message:
I am encouraged that you were able to get it to work but I am afraid I
don't understand what it means to "build from the trunk" ... can you
explain how to do that?

thanks!

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Comment By: Tom Browder (tbrowder2)
Date: 2012-07-24 14:00

Message:
After r_weiss fixed g-acad.c at revision 51656, the trunk works fine with
your models, specifically:

$ g-acad -v -e error_basin.txt -o basin.facet goblet.g basin1.r
Model: goblet.g
Objects: basin1.r
Tesselation tolerances:
	abs = 0 mm
	rel = 0.01
	norm = 0
Calculational tolerances:
	dist = 0.0005 mm perp = 1e-06
db_apply_state_from_comb(): WARNING: color override in combination within
region '/basin1.r/stem1.r', ignored
db_apply_state_from_comb(): WARNING: material property spec in combination
below region '/basin1.r/stem1.r', ignored
Warning:  region unioned into region at '/basin1.r/stem1.r', lower region
info ignored

do_region_end(0 0%) /basin1.r
Attempting to process region /basin1.r
 {basin1.s} u {basin1.s}
 {ball1.s} u {ball2.s}
 {(ball1.s u ball2.s)} u {ball3.s}
 {basin1.s} + {((ball1.s u ball2.s) u ball3.s)}
 {(basin1.s u basin1.s)} u {(basin1.s + ((ball1.s u ball2.s) u ball3.s))}
 {((basin1.s u basin1.s) u (basin1.s + ((ball1.s u ball2.s) u ball3.s)))} u
{basin1.s}
 {ball1.s} u {ball2.s}
 {(ball1.s u ball2.s)} u {ball3.s}
 {(((basin1.s u basin1.s) u (basin1.s + ((ball1.s u ball2.s) u ball3.s))) u
basin1.s)} u {((ball1.s u ball2.s) u ball3.s)}
 {((((basin1.s u basin1.s) u (basin1.s + ((ball1.s u ball2.s) u ball3.s)))
u basin1.s) u ((ball1.s u ball2.s) u ball3.s))} u {basin1.s}
Tried 1 regions, 1 conv. to NMG's 1 conv. to tri. nmgper = 100.00% triper =
100.00% 
Tried 1 regions, 1 converted to NMG's successfully.  100%
                  1 triangulated successfully. 100%
3640 triangles written

Try to build from the  trunk and see if that works for you.

----------------------------------------------------------------------

Comment By: G. G. Krupp (ggkrupp)
Date: 2012-07-24 12:24

Message:
Ran the exact same case as my post from 2012-07-24 04:19:57 PDT below
except this time I ran it on my Linux machine running BRL-CAD v7.22.  The
exporter ran very quickly but ended in a segmentation fault.  Below is the
complete command line inputs/outputs:

eegeek@Office-Linux:~/Documents/CAD$ g-acad -v -e error_basin.txt -o
basin.facet goblet.g basin1.r
Model: goblet.g
Objects: basin1.r
Tesselation tolerances:
	abs = 0 mm
	rel = 0.01
	norm = 0
Calculational tolerances:
	dist = 0.0005 mm perp = 1e-06
db_apply_state_from_comb(): WARNING: color override in combination within
region '/basin1.r/stem1.r', ignored
db_apply_state_from_comb(): WARNING: material property spec in combination
below region '/basin1.r/stem1.r', ignored
Warning:  region unioned into region at '/basin1.r/stem1.r', lower region
info ignored

do_region_end(0 0%) /basin1.r
Attempting to process region /basin1.r
 {basin1.s} u {basin1.s}
 {ball1.s} u {ball2.s}
 {(ball1.s u ball2.s)} u {ball3.s}
 {basin1.s} + {((ball1.s u ball2.s) u ball3.s)}
 {(basin1.s u basin1.s)} u {(basin1.s + ((ball1.s u ball2.s) u ball3.s))}
 {((basin1.s u basin1.s) u (basin1.s + ((ball1.s u ball2.s) u ball3.s)))} u
{basin1.s}
 {ball1.s} u {ball2.s}
 {(ball1.s u ball2.s)} u {ball3.s}
 {(((basin1.s u basin1.s) u (basin1.s + ((ball1.s u ball2.s) u ball3.s))) u
basin1.s)} u {((ball1.s u ball2.s) u ball3.s)}
 {((((basin1.s u basin1.s) u (basin1.s + ((ball1.s u ball2.s) u ball3.s)))
u basin1.s) u ((ball1.s u ball2.s) u ball3.s))} u {basin1.s}
Segmentation fault (core dumped)
eegeek@Office-Linux:~/Documents/CAD$ 

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Comment By: G. G. Krupp (ggkrupp)
Date: 2012-07-24 11:10

Message:
Just checked the home Linux version and it is 7.22.  I only tried one test
case on that system so maybe I'll try a couple of more tonight to see if I
can get the export to work.  I have been successful in getting an IGES
export to work.

----------------------------------------------------------------------

Comment By: G. G. Krupp (ggkrupp)
Date: 2012-07-24 06:13

Message:
Spoke too soon ... the 7.22 folder has no files in it.  Any idea where I
can get a Windows 7 download of v7.22?

----------------------------------------------------------------------

Comment By: G. G. Krupp (ggkrupp)
Date: 2012-07-24 06:09

Message:
I am not sure what version is on the Linux box but I just used the link
next to "Looking for the latest version?" at
https://sourceforge.net/projects/brlcad/files/BRL-CAD%20for%20Windows/

I now see the 7.22 folder and will try to download that to see if it fixes
the issue.  Thanks for the help!

----------------------------------------------------------------------

Comment By: Tom Browder (tbrowder2)
Date: 2012-07-24 05:58

Message:
What version of BRL-CAD are you running on the Linux box?  I  haven't
checked your .g file yet, but the latest version (7.22.0, binary released
for Win and Linux, among others) has LOTS of bug fixes and enhancements. 
Note that the latest is the third release since your Win version--best to
keep up with latest if you are a heavy user of BRL-CAD.

----------------------------------------------------------------------

Comment By: G. G. Krupp (ggkrupp)
Date: 2012-07-24 04:34

Message:
I uploaded both .g files that I have referenced in my comments and
screenshots.

One other interesting note is that I tried to do an ACAD export on my home
machine last night which is running BRL-CAD on a Linux OS but had similar
results.  I am thinking that either the ACAD exporter does not work in this
version or that I am doing something wrong when I try to export.

----------------------------------------------------------------------

Comment By: Tom Browder (tbrowder2)
Date: 2012-07-24 04:29

Message:
Can you upload a copy of your .g file?  Maybe the problem has been fixed
with later releases.

----------------------------------------------------------------------

Comment By: G. G. Krupp (ggkrupp)
Date: 2012-07-24 04:19

Message:
Some more details.  I again tried to work with the goblet model built in
the tutorial (Lesson 6) but I only tried to export the basin region
(basin1.r).  Below is the command line inputs/outputs.  This took over an
hour to run but in the end still failed to produce an ACAD facet file with
any info other than a header line.

C:\Users\gkrupp\Documents\BRLCAD 7.20.2>g-acad -v -e error_basin.txt -r
0.0001 -o basin.facet goblet.g basin1.r
Model: goblet.g
Objects: basin1.r
Tesselation tolerances:
        abs = 0 mm
        rel = 0.0001
        norm = 0
Calculational tolerances:
        dist = 0.0005 mm perp = 1e-005
db_apply_state_from_comb(): WARNING: color override in combination within
region
 '/basin1.r/stem1.r', ignored
db_apply_state_from_comb(): WARNING: material property spec in combination
below
 region '/basin1.r/stem1.r', ignored
Warning:  region unioned into region at '/basin1.r/stem1.r', lower region
info ignored

do_region_end(0 0%) /basin1.r
Attempting to process region /basin1.r
 {basin1.s} u {basin1.s}
NULL malloc(432896400) nmg_crackshells flags[]
bu_malloc: Insufficient memory available

bu_malloc: malloc failure
FAILED in Boolean evaluation: /basin1.r
        Nothing left of this region after Boolean evaluation
Tried 1 regions, 1 conv. to NMG's 1 conv. to tri. nmgper = 100.00% triper =
100.
00%
Tried 1 regions, 1 converted to NMG's successfully.  100%
                  1 triangulated successfully. 100%
0 triangles written

C:\Users\gkrupp\Documents\BRLCAD 7.20.2>

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[brlcad-tracker] [ brlcad-Support Requests-3547665 ] g-acad Exporter not working for me

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[brlcad-tracker] [ brlcad-Support Requests-3547665 ] g-acad Exporter not working for me