Self test error on testTaperedHole

[PrzemoF]

With OCC7.4 it apparently fails to revolve the sketch. I get this error when loading the project but as soon as a recompute the document the error disappears and the hole becomes conical. Here is the file how it looks after recompute:

hole_test_fails_occ73.FCStd

So I am not sure what's best how to handle the issue as it seems to be another regression of OCC7.4.

I checked our "hole" code - there is plenty happening there. I need to export the parameters of the polyline that causes the OCCT to fail. I have a "test bed" ready in OCCT preferred format (TCL script executable under DRAWEXE test harness)

For the brave:

Code: Select all

pload MODELING VISUALIZATION
polyline w 2 2 0 1.5 1.5 0  1.5 1.5 3 1 1 5 2 2 5 2 2 0
revol s w 2 2 2 0 0 1 360
checkshape s
vdisplay s
vfit

Save to a file, start DRAWEXE and load with "source file_name". It shoudl produce this:

Zrzut ekranu z 2020-05-14 14-49-48.png (8.41 KiB) Viewed 1090 times

[fcaduser]

I confirm the bug for this version :

################################################
OS: Debian GNU/Linux 10 (buster) (GNOME/gnome)
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.19.20816 (Git)
Build type: Release
Branch: master
Hash: bc107eacc8e020a779b2bbcb21559283ee440268
Python version: 3.7.3
Qt version: 5.11.3
Coin version: 4.0.0a
OCC version: 7.4.1.dev <-------------------------------------------------------------------------------------------------------------------
Locale: French/France (fr_FR)

[PrzemoF]

Patch:

Code: Select all

diff --git a/src/Mod/PartDesign/App/FeatureHole.cpp b/src/Mod/PartDesign/App/FeatureHole.cpp
index 5343d9cce7..b7ca2a50a7 100644
--- a/src/Mod/PartDesign/App/FeatureHole.cpp
+++ b/src/Mod/PartDesign/App/FeatureHole.cpp
@@ -1134,6 +1134,9 @@ App::DocumentObjectExecReturn *Hole::execute(void)
         }
         mkWire.Add( BRepBuilderAPI_MakeEdge(lastPoint, firstPoint) );
 
+       std::cout << "First point:" << firstPoint.X() << ", " << firstPoint.Y()  << ", " << firstPoint.Z() << std::endl;^M
+       std::cout << "Last point:" << lastPoint.X() << ", " << lastPoint.Y()  << ", " << lastPoint.Z() << std::endl;^M
+^M
 
         TopoDS_Wire wire = mkWire.Wire();

Result:

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First point:0, 0, 0
Last point:-0, -0, 25
First point:0, 0, 0
Last point:-0, -0, 5

Looks like it's A to B, A to C sketch. Maybe thats the problem. Minus zero might be another problem or it's just c++

[PrzemoF]

I just realised the those 2 edges overlap...Maybe that's the problem?

[PrzemoF]

With help from Opencascade forum I got our test case. And the results are weird:

Code: Select all

$ cat test
pload MODELING VISUALIZATION

vertex  A 0 0 0
vertex  B 0 0 25
vertex  C 0 0 0
vertex  D 0 0 5

edge e1 A B
edge e2 C D

wire w1 e1 e2

revol s1 w1 -5 5 0 0 0 1 360

vdisplay s1 

vfit

localhost:/home/przemo/software/FreeCAD/OCCT
$ DRAWEXE -f test
corrupted size vs. prev_size in fastbins
Przerwane (zrzut pamięci)
localhost:/home/przemo/software/FreeCAD/OCCT
$ DRAWEXE -f test
corrupted size vs. prev_size in fastbins
Przerwane (zrzut pamięci)
localhost:/home/przemo/software/FreeCAD/OCCT
$ DRAWEXE -f test
corrupted size vs. prev_size in fastbins
Przerwane (zrzut pamięci)
localhost:/home/przemo/software/FreeCAD/OCCT
$ DRAWEXE -f test
*** Abort *** an exception was raised, but no catch was found.
	... The exception is:SIGSEGV 'segmentation violation' detected. Address 269
malloc(): unsorted double linked list corrupted
Przerwane (zrzut pamięci)
localhost:/home/przemo/software/FreeCAD/OCCT
$ DRAWEXE -f test
*** Abort *** an exception was raised, but no catch was found.
	... The exception is:SIGSEGV 'segmentation violation' detected. Address 1d9
localhost:/home/przemo/software/FreeCAD/OCCT
$ DRAWEXE -f test
*** Abort *** an exception was raised, but no catch was found.
	... The exception is:SIGSEGV 'segmentation violation' detected. Address 89
localhost:/home/przemo/software/FreeCAD/OCCT
$ DRAWEXE -f test
corrupted size vs. prev_size in fastbins
Przerwane (zrzut pamięci)
localhost:/home/przemo/software/FreeCAD/OCCT
$ which DRAWEXE
/usr/bin/DRAWEXE
localhost:/home/przemo/software/FreeCAD/OCCT
$ rpm -qf /usr/bin/DRAWEXE 
opencascade-draw-7.4.0-3.fc32.x86_64
localhost:/home/przemo/software/FreeCAD/OCCT
$ uname -a
Linux localhost.localdomain 5.6.7-300.fc32.x86_64 #1 SMP Thu Apr 23 14:13:50 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux

I need someone with opencascade 7.3.0 to do a test:
- copy the content of my est script to a file and save it somewhere
- open that firectory in terminal and run DRAW -f -your-test-file-name
- do it few times, see if the output is consistent
- run DRAWEXE and load the test file from interactive session with "source test". Expected result:

Zrzut ekranu z 2020-05-21 08-12-58.png (8.91 KiB) Viewed 1008 times

I can't do the test in VM as it seems to mess with graphical drivers - I get some MESA error.

[PrzemoF]

I posted the problem again on opencascade forum - looks like the first one never made it through the wires. The post waits for moderation...

[PrzemoF]

Reported here: https://tracker.dev.opencascade.org/view.php?id=31577

[PrzemoF]

I posted the problem again on opencascade forum - looks like the first one never made it through the wires. The post waits for moderation...

Looks like my post won't see the opencascade forum - it's still with [not published] status.

[PrzemoF]

I posted the problem again on opencascade forum - looks like the first one never made it through the wires. The post waits for moderation...

My message finally made it! Maybe we'll get someone to test/confirm the problem.

https://www.opencascade.com/content/inc ... -drawexe-0

[PrzemoF]

Looks like OCC-7.4.0-beta got the problem fixed or something in FreeCAD fixed the problem. Latest local build:
OS: Fedora 32 (Workstation Edition) (GNOME/gnome-xorg)
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.19.21734 (Git)
Build type: Unknown
Branch: master
Hash: 5613793f5352285fcb8d0e16e11241b6a29d61ac
Python version: 3.8.3
Qt version: 5.14.2
Coin version: 4.0.0a
OCC version: 7.4.0.beta
Locale: Polish/Poland (pl_PL)
self test from command line:

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testStairs (TestArch.ArchTest) ... ok
testStructure (TestArch.ArchTest) ... ok
testWall (TestArch.ArchTest) ... ok
testWindow (TestArch.ArchTest) ... ok

----------------------------------------------------------------------
Ran 479 tests in 132.277s

OK
System exit