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Re: [OpenSCAD] CGAL error in CGAL_Nef_polyhedron's union operator: CGAL ERROR: assertion violation!

M
MichaelAtOz
Mon, Jan 12, 2015 10:10 PM

a. Your two posts are still flagged "This post has NOT been accepted by the
mailing list yet" check your  subscription
http://forum.openscad.org/mailing_list/MailingListOptions.jtp?forum=1

b. As your edit implies, such errors usually mean a bad STL, posting it here
can let those of us who know the good tools can have a look at it.

c. It helps if you post your OpenSCAD version and Operating system info.

d. You may want to try the latest Development  snapshot
http://www.openscad.org/downloads.html#snapshots  . It has lots of
improvements, it is almost ready for release.


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View this message in context: http://forum.openscad.org/CGAL-error-in-CGAL-Nef-polyhedron-s-union-operator-CGAL-ERROR-assertion-violation-tp11013p11021.html
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a. Your two posts are still flagged "This post has NOT been accepted by the mailing list yet" check your subscription <http://forum.openscad.org/mailing_list/MailingListOptions.jtp?forum=1> b. As your edit implies, such errors usually mean a bad STL, posting it here can let those of us who know the good tools can have a look at it. c. It helps if you post your OpenSCAD version and Operating system info. d. You may want to try the latest Development snapshot <http://www.openscad.org/downloads.html#snapshots> . It has lots of improvements, it is almost ready for release. ----- Unless specifically shown otherwise above, my contribution is in the Public Domain; To the extent possible under law, I have waived all copyright and related or neighbouring rights to this work. This work is published globally via the internet. :) Inclusion of works of previous authors is not included in the above. The TPP is no simple “trade agreement.” Fight it! http://www.ourfairdeal.org/ -- View this message in context: http://forum.openscad.org/CGAL-error-in-CGAL-Nef-polyhedron-s-union-operator-CGAL-ERROR-assertion-violation-tp11013p11021.html Sent from the OpenSCAD mailing list archive at Nabble.com.
K
keithparker
Tue, Jan 13, 2015 11:17 AM

Thanks Michael

My error has gone now that I'm using a better-quality STL file as input.
Interesting - as the problematic STL file was generated in openscad.  I
shall post my code snippet in case I've missed something fundamental in the
body generation...

Perhaps a 'bad STL' error could be produced...?  This must be a common
problem.

I'm using 2014.03 on Windoze7 & Ubuntu - comparing the two...

Cheers

--
View this message in context: http://forum.openscad.org/CGAL-error-in-CGAL-Nef-polyhedron-s-union-operator-CGAL-ERROR-assertion-violation-tp11013p11028.html
Sent from the OpenSCAD mailing list archive at Nabble.com.

Thanks Michael My error has gone now that I'm using a better-quality STL file as input. Interesting - as the problematic STL file was generated in openscad. I shall post my code snippet in case I've missed something fundamental in the body generation... Perhaps a 'bad STL' error could be produced...? This must be a common problem. I'm using 2014.03 on Windoze7 & Ubuntu - comparing the two... Cheers -- View this message in context: http://forum.openscad.org/CGAL-error-in-CGAL-Nef-polyhedron-s-union-operator-CGAL-ERROR-assertion-violation-tp11013p11028.html Sent from the OpenSCAD mailing list archive at Nabble.com.
K
kintel
Sun, Jan 18, 2015 4:32 AM

We're very picky about STL input. We have some ideas and wishes for
automatically repairing STL's on import (see e.g.
https://github.com/openscad/openscad/issues/1042).
If you share your STL files, we might be able to tell you what's wrong with
it and how to fix it.

-Marius

--
View this message in context: http://forum.openscad.org/CGAL-error-in-CGAL-Nef-polyhedron-s-union-operator-CGAL-ERROR-assertion-violation-tp11013p11077.html
Sent from the OpenSCAD mailing list archive at Nabble.com.

We're very picky about STL input. We have some ideas and wishes for automatically repairing STL's on import (see e.g. https://github.com/openscad/openscad/issues/1042). If you share your STL files, we might be able to tell you what's wrong with it and how to fix it. -Marius -- View this message in context: http://forum.openscad.org/CGAL-error-in-CGAL-Nef-polyhedron-s-union-operator-CGAL-ERROR-assertion-violation-tp11013p11077.html Sent from the OpenSCAD mailing list archive at Nabble.com.