test msg - pls ignore
I sent an email, never got thru.
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Test image, not copied from Debian:
</file/t359/Capture-key-oem-netfabb.jpg>
Shows in preview.
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Capture post for Nabble support.
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Is it fixed?
</file/t359/avatar_6755_emu.jpg>
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Is it fixed?
</file/t359/1284801paper_fighting.gif>
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While working on https://www.thingiverse.com/thing:3762730 I faced strange effect: script produce
ERROR: CGAL error in CGALUtils::applyBinaryOperator union: CGAL ERROR: assertion violation! Expr: itl != it->second.end() File: /mxe/usr/x86_64-w64-mingw32.static.posix/include/CGAL/Nef_3/SNC_external_structure.h Line: 1152
on F6 but some change in order of unioning yields expected result.
I am attaching an archive with both faulty and good versions of scripts.
(The scripts render long enough: more than 20 minutes to preview the first script on my PC and 6 more minutes to render, yet more for the second script.)
If this is new issue I'd appreciate advice on how to (get a ticket number) register it.
Thank you,
Tim
It probably isn't a bug. It is quite possible to have three objects such
that unioning two of them gives a non-manifold result but unioning them in
another order doesn't. For example consider two cubes sharing one edge and
a third that overlaps that edge. If you do the union one, two, three you
will get an error but one, three, two will work and so will any other order
because the intermediate results are all manifold.
On Tue, 23 Jul 2019 at 10:08, Shaporev, Timur tim@auriga.com wrote:
While working on https://www.thingiverse.com/thing:3762730 I faced
strange effect: script produce
ERROR: CGAL error in CGALUtils::applyBinaryOperator union: CGAL ERROR:
assertion violation! Expr: itl != it->second.end() File:
/mxe/usr/x86_64-w64-mingw32.static.posix/include/CGAL/Nef_3/SNC_external_structure.h
Line: 1152
on F6 but some change in order of unioning yields expected result.
I am attaching an archive with both faulty and good versions of scripts.
(The scripts render long enough: more than 20 minutes to preview the first
script on my PC and 6 more minutes to render, yet more for the second
script.)
If this is new issue I'd appreciate advice on how to (get a ticket number)
register it.
Thank you,
Tim
OpenSCAD mailing list
Discuss@lists.openscad.org
http://lists.openscad.org/mailman/listinfo/discuss_lists.openscad.org
Fixed?
http://forum.openscad.org/file/t359/avatar_20305_cylon_kitty.gif
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Test links ie 'Link' button on forum.
As per problem reported
http://support.nabble.com/Inserting-images-and-links-not-inline-or-formatted-in-final-post-td7603030.html
to Nabble.
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Shaporev, Timur wrote
While working on https://www.thingiverse.com/thing:3762730 I faced strange
effect: script produce
ERROR: CGAL error in CGALUtils::applyBinaryOperator union: CGAL ERROR:
assertion violation! Expr: itl != it->second.end() File:
/mxe/usr/x86_64-w64-mingw32.static.posix/include/CGAL/Nef_3/SNC_external_structure.h
Line: 1152
on F6 but some change in order of unioning yields expected result.
I am attaching an archive with both faulty and good versions of scripts.
(The scripts render long enough: more than 20 minutes to preview the first
script on my PC and 6 more minutes to render, yet more for the second
script.)
If this is new issue I'd appreciate advice on how to (get a ticket number)
register it.
Thank you,
Tim
OpenSCAD mailing list
Discuss@.openscad
http://lists.openscad.org/mailman/listinfo/discuss_lists.openscad.org
20190722.zip (8K)
<http://forum.openscad.org/attachment/27016/0/20190722.zip>
I had a look at the code.
With the combination of operations, mostly lined-up at the same boundaries
you are prone to getting edges of two objects aligning, which creates
non-manifold geometry.
At such high resolution you increase the chances of such common edges
aligning.
Firstly, the preview artefacts you have can be fixed by using convexity=10
in linear_extrude (in two places), it makes looking at the detail easier.
At first I suspected the four quarters probably had the symmetry to cause
this.
But not this time.
It is an art you learn, but I look for points of convergence.
Second try was here:
http://forum.openscad.org/file/t359/Capture_ring_centre.jpg
The middle edge of the inside of the central ring hole, that aligns with the
surface of the back of the face.
Try this as an example
#cube([40,40,10]);
translate([5,20,20])
rotate([0,90,0])
cylinder(h=30,r=10,$fn=12);
F6 gets "UI-WARNING: Object may not be a valid 2-manifold and may need
repair!"
So in fail1.scad the easy way to fix it is to rotate that cylinder around
z-axis a small amount, so the line is not co-incident with that face.
difference() {
union() {
// assemble them back again
quarter(); mirror([0,1,0]) quarter();
mirror([0,0,1]) {
quarter(); mirror([0,1,0]) quarter();
}
rotate([0,0,1]) //
<--------------------------------------------
rotate_extrude()
hull() {
translate([Rmid,ring_min_width/2-Rth]) circle(Rth);
translate([Rmid,Rth-ring_min_width/2]) circle(Rth);
}
hull() {
translate([Rmid, yl,zl-Rm]) sphere(Rth);
With that F6 completes without error.
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The TPP is no simple “trade agreement.” Fight it! http://www.ourfairdeal.org/ time is running out!
Sent from: http://forum.openscad.org/