FreeCADView Issue Details
| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0002036 | FreeCAD | Bug | public | 2015-04-03 12:24 | 2017-03-10 20:35 |
| Reporter | jalapeno | Assigned To | Kunda1 | ||
| Priority | normal | Severity | minor | Reproducibility | always |
| Status | closed | Resolution | fixed | ||
| OS | Ubuntu | OS Version | 14.04.2 | ||
| Fixed in Version | 0.16 | ||||
| Summary | 0002036: Part Extrude with Taper Angle != 0 Fails | ||||
| Description | Creating an extrusion with a non-zero taper angle fails to produce an edge (or surface). OS: Ubuntu 14.04.2 LTS Word size of OS: 64-bit Word size of FreeCAD: 64-bit Version: 0.16.4740 (Git) Branch: master Hash: 32688a636b0c8487d10d6d6e14fe1cab5e4f3696 Python version: 2.7.6 Qt version: 4.8.6 Coin version: 4.0.0a OCC version: 6.8.0.oce-0.17 | ||||
| Steps To Reproduce | 1) Select Sketcher Workbench 2) Create a new sketch, XY plane. 3) Create a Circle. 4) Anchor circle centre to origin. 5) Set circle radius to 40mm. 6) Close sketch 7) Set workbench to Part 8) Select sketch 9) Extrude 10) Extrude direction [0, 0, 1] 11) Extrude length 10mm 12) Taper outward angle = 0 deg 13) Create solid = No 14) OK 15) Observe that a stubby cylinder is created. 16) Select the extrusion in the model tree. 17) Select the data tab 18) Locate the taper angle. Observe that it is 0. 19) Change the taper angle to 5 and press enter 20) Observe that the cylinder has vanished. I expected a conical section. 21) Change the taper angle to -5 and press enter 22) Observe that the cylinder has vanished. I expected a conical section. 23) Change the taper angle to 0 and press enter. 24) Observe that the cylinder has re-appeared. | ||||
| Additional Information | A similar problem exists when creating a solid. The edge of the circle does not appear. | ||||
| Tags | OCC Bug, upstream | ||||
| FreeCAD Information | |||||
|
|
|
|
|
It would be great if you could attach a FCStd file. |
|
|
Confirmed with: OS: Ubuntu 12.04.5 LTS Word size of OS: 64-bit Word size of FreeCAD: 64-bit Version: 0.16.4742 (Git) Branch: master Hash: d13c279d5abb5c27784f655ed890a5ba07518d52 Python version: 2.7.3 Qt version: 4.8.1 Coin version: 3.1.3 OCC version: 6.8.0.oce-0.17 But it doesn't happen with: OS: Windows 7 Word size of OS: 64-bit Word size of FreeCAD: 64-bit Version: 0.16.4744 (Git) Branch: master Hash: d3af1ea85a242393a97446e558b606cf3ce307a0 Python version: 2.7.6 Qt version: 4.8.5 Coin version: 4.0.0a OCC version: 6.6.0 The geometry check reports a problem with the wire of the extruded shape that it's not closed. However, it doesn't complain about the input sketch. |
|
|
|
|
|
|
|
|
The defect occurs with OS: Ubuntu 14.04.2 LTS Word size of OS: 64-bit Word size of FreeCAD: 64-bit Version: 0.16.4747 (Git) Branch: master Hash: 960be3c809140e1beeb019ecfee6909c39e3d3c6 Python version: 2.7.6 Qt version: 4.8.6 Coin version: 4.0.0a OCC version: 6.8.0.oce-0.17 But doesn't occur with OS: Ubuntu 14.04.2 LTS Word size of OS: 64-bit Word size of FreeCAD: 64-bit Version: 0.16.4701 (Git) Branch: master Hash: f6d50e6f33d71a533d18707aa3d74d0d45a5fc28 Python version: 2.7.6 Qt version: 4.8.6 Coin version: 4.0.0a OCC version: 6.7.1 So a bisection between 0.16.4701 and 0.16.4740 may yield the commit that caused the problem. My file Extrude_Taper_Angle_Problem.fcstd was produced with 0.16.4701, which works properly. The attachment 0002036.fcstd was produced with a faulty version, and has been saved with the fault captured. To reproduce the fault, the taper angle of the extrusion must be adjusted to force the surface to be re-computed. |
|
|
> So a bisection between 0.16.4701 and 0.16.4740 may yield the commit that caused the problem. No. Look at the versions numbers I posted. For rev. 4744 it works with OCC 6.6 but for rev.4742 it fails with OCC 6.8. So, it must be related somehow to OCC. Either OCC is less error tolerant or it's simply a regression. |
|
|
|
|
|
I agree with Werner, this is a regression. I have a command here that dumps out the pcurves from a face. I have uploaded a screen dump of this commands results. You will notice that 2 curves lie on the umax periodic boundary. From my experience with model refine, this happens frequently with occ algorithms and is one source of our many needed calls to shapefix_face. Another clue is that the problem goes away if you leave the circle slightly open. Edit: I didn't make my point very clear above. Shapefix_face will correct this problem. related note: Shouldn't makeDraft work for just an edge also. Standard_Failure::Raise("Only a wire or a face is supported"); |
|
|
Shouldn't this be a bug in lofting (or creating a ruled surface)? AFAIK we don't use the tapering function of OCCT. Please also keep in mind that was a regression in the offset function (API). http://forum.freecadweb.org/viewtopic.php?f=8&t=9122 commit 17a85e4352b35a536a73f7d4f91b011446652e97 http://tracker.dev.opencascade.org/view.php?id=25705 |
|
|
I can't reproduce the problem from 0002036.fcstd in OS: Debian GNU/Linux 7.8 (wheezy) Word size of OS: 64-bit Word size of FreeCAD: 64-bit Version: 0.16.4748 +362 (Git) Branch: danfalck/path-module,dev-skiprecompute,dev-fuzzyboolean Hash: 6e77ca27f137955d0088c181c59e313c30948f19 Python version: 2.7.3 Qt version: 4.8.2 Coin version: 4.0.0a OCC version: 6.9.0.beta-41ed1ed After a a recompute the Extrude has a valid shape. I would expect to this problem to be solved by migrating to OCCT 6.9.0 |
|
|
> I would expect to this problem to be solved by migrating to OCCT 6.9.0 @shoogen can you confirm that it is indeed solved? |
|
|
bumped forum thread: https://forum.freecadweb.org/viewtopic.php?f=8&t=9122&p=155683#p155683 |
|
|
I can not reproduce: OS: "Arch Linux" Word size of OS: 64-bit Word size of FreeCAD: 64-bit Version: 0.17.9790 (Git) Build type: Release Branch: master Hash: 294b2308d660a4aae11e90ec22f96ca56190bcd1 Python version: 2.7.13 Qt version: 4.8.7 Coin version: 3.1.3 OCC version: 6.9.1 |
|
|
Resolving. This issue should be fixed in all builds that include OCCT >=v6.9.0 If not please re-open ticket. |
| Date Modified | Username | Field | Change |
|---|---|---|---|
| 2015-04-03 12:24 | jalapeno | New Issue | |
| 2015-04-03 12:24 | jalapeno | File Added: Extruded_Cylinder_TaperAngle=1.png | |
| 2015-04-04 08:23 | shoogen | Note Added: 0005963 | |
| 2015-04-05 14:30 | wmayer | Note Added: 0005966 | |
| 2015-04-05 14:30 | wmayer | File Added: 0002036.fcstd | |
| 2015-04-05 21:16 | jalapeno | File Added: Extrude_Taper_Angle_Problem.fcstd | |
| 2015-04-05 21:24 | jalapeno | Note Added: 0005968 | |
| 2015-04-06 07:47 | wmayer | Note Added: 0005969 | |
| 2015-04-06 13:45 | tanderson69 | File Added: pcurves.png | |
| 2015-04-06 13:46 | tanderson69 | Note Added: 0005970 | |
| 2015-04-06 13:54 | tanderson69 | Note Edited: 0005970 | |
| 2015-04-06 15:16 | shoogen | Tag Attached: OCC Bug | |
| 2015-04-07 06:28 | shoogen | Note Added: 0005971 | |
| 2015-04-07 06:29 | shoogen | Note Edited: 0005971 | |
| 2015-04-07 06:31 | shoogen | Note Edited: 0005971 | |
| 2015-04-07 06:37 | shoogen | Note Edited: 0005971 | |
| 2015-04-07 06:44 | shoogen | Note Added: 0005972 | |
| 2015-04-07 13:59 | shoogen | Note Edited: 0005972 | |
| 2017-01-15 04:49 | Kunda1 | Tag Attached: upstream | |
| 2017-01-15 04:50 | Kunda1 | Note Added: 0007780 | |
| 2017-01-24 18:46 | Kunda1 | Note Added: 0007967 | |
| 2017-01-24 18:47 | Kunda1 | Tag Attached: #pending | |
| 2017-01-24 18:49 | Kunda1 | Status | new => feedback |
| 2017-01-24 19:09 | cox | Note Added: 0007968 | |
| 2017-01-24 19:16 | Kunda1 | Note Added: 0007969 | |
| 2017-01-24 19:16 | Kunda1 | Status | feedback => resolved |
| 2017-01-24 19:16 | Kunda1 | Fixed in Version | => 0.16 |
| 2017-01-24 19:16 | Kunda1 | Resolution | open => fixed |
| 2017-01-24 19:16 | Kunda1 | Assigned To | => Kunda1 |
| 2017-01-24 19:16 | Kunda1 | Tag Detached: #pending | |
| 2017-03-10 20:35 | kkremitzki | Status | resolved => closed |
