View Issue Details
ID | Project | Category | View Status | Date Submitted | Last Update |
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0001576 | Sketcher | Bug | public | 2014-06-07 08:31 | 2018-09-30 16:28 |
Reporter | wmayer | Assigned To | |||
Priority | low | Severity | minor | Reproducibility | have not tried |
Status | closed | Resolution | fixed | ||
Product Version | 0.14 | ||||
Target Version | 0.18 | ||||
Summary | 0001576: Slow performance using trim tool ([s]due to Solver[/s]) | ||||
Description | http://forum.freecadweb.org/viewtopic.php?f=3&t=4276&start=10#p53823 Also after doing the trim on the left arc the trim on the right arc always gives unexpected results. Using 0.14.3647 the trim doesn't take 18 min for me but it still takes around 30 sec which is still too much for this simple sketch. | ||||
Additional Information | OS: Windows 7 Platform: 64-bit Version: 0.14.3647 (Git) Branch: master Hash: c05801d6edff634a4edab338e4f66ceca6da3b72 Python version: 2.7.6 Qt version: 4.8.5 Coin version: 4.0.0a SoQt version: 1.6.0a OCC version: 6.6.0 | ||||
Tags | sketcher, slow, Solver, trim | ||||
FreeCAD Information | |||||
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Confirmed by @nemesis he writes: > but for me a classic boolean problem due to the vertex on the edge of the cube, and I guess due to OCCT, not Freecad |
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confirmed on : OS: Mac OS X Word size of OS: 64-bit Word size of FreeCAD: 64-bit Version: 0.16.6706 (Git) Build type: Release Branch: tag: 0.16.6706 Hash: f86a4e411ff7848dea98d7242f43b7774bee8fa0 Python version: 2.7.11 Qt version: 4.8.7 Coin version: 3.1.3 OCC version: 6.8.0.oce-0.17 |
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@Abdullah is the FC or OCC related? |
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I downloaded the file and tried it with: OS: Ubuntu 16.04.2 LTS Word size of OS: 64-bit Word size of FreeCAD: 64-bit Version: 0.17.10993 (Git) Build type: None Branch: master Hash: bf5f3484f6f5506795b6e9b86288c75ab7357291 Python version: 2.7.12 Qt version: 4.8.7 Coin version: 4.0.0a OCC version: 7.1.0 There is no time problem at all (it executes under 1 second). What happens, as in other tickets, is that the trimming support in the Sketcher has a way lots of room for improvement. I would dare to say, it needs a good redesign. In presence of Point on Object and tangency constraints it generally fails. To be clear, generally the result is not the expected one, lines from the wrong side of the semicircle get removed and contraints get added. Trimming calculations are done in the sketcher, OCC only handles the values provided by the sketcher. This is the relevant function:
I am not sure when the solver improvements got merged, but I would say anything like 18 minutes wait time must be related to the solver not being able to reach a solution for the involved constraints. We had similar tickets in the past (for the solver). The agreement with solver improvements was to default to 100-200 iterations no escaling due to size in number of geometric elements in the sketch (though this configuration may be overriden via the by default hidden "Advanced solver dialog"). If a solution can not be reached by then, then it exits. Therefore, it is very unlikely not to say impossible to have the solver running for 18 minutes nowadays (the dossier should be huge so that each iteration requires some 10-20 seconds). Unless somebody can reproduce the slow behaviour with 0.17, I would just merge this ticket with the other "trim support provides unexpected results". Hopefully, somebody will dedicate some coding time to this issue before 0.17 is released ;) |
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Tagged as part of the Solver tickets. Thanks Abdullah! |
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The remaining of this ticket is sketcher, as solver improvements solved the time problem. |
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modified summary to reflect abdullah's comment 0001576:0011206 |
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I think this can be closed as it's not reproducible any more that it takes a lot of time. |
Date Modified | Username | Field | Change |
---|---|---|---|
2014-06-07 08:31 | wmayer | New Issue | |
2014-06-08 11:06 | shoogen | Tag Attached: sketcher | |
2017-01-13 13:00 | Kunda1 | Note Added: 0007710 | |
2017-01-14 08:42 | nemesis | Note Added: 0007754 | |
2017-01-23 18:36 | Kunda1 | Relationship added | related to 0002463 |
2017-04-26 02:35 | Kunda1 | Status | new => confirmed |
2017-04-26 02:35 | Kunda1 | Product Version | => 0.14 |
2017-05-08 05:02 | Kunda1 | Tag Attached: slow | |
2017-05-08 22:53 | Kunda1 | Note Added: 0008920 | |
2017-05-09 12:16 | abdullah | Note Added: 0008924 | |
2017-05-09 12:19 | Kunda1 | Tag Attached: Solver | |
2017-05-09 12:19 | Kunda1 | Tag Attached: trim | |
2017-05-09 12:32 | Kunda1 | Note Edited: 0008924 | |
2017-05-09 12:32 | Kunda1 | Note Edited: 0008924 | |
2017-05-09 12:33 | Kunda1 | Note Edited: 0008924 | |
2017-05-09 12:46 | Kunda1 | Note Added: 0008925 | |
2017-05-09 12:50 | Kunda1 | Summary | Slow performance using trim tool => Slow performance using trim tool due to Solver |
2017-05-11 14:25 | Kunda1 | Relationship added | related to 0001478 |
2017-12-13 15:20 | Kunda1 | Project | Sketcher => GCS |
2018-04-27 10:08 | abdullah | Note Added: 0011206 | |
2018-04-27 10:08 | abdullah | Project | GCS => Sketcher |
2018-06-20 14:29 | Kunda1 | Target Version | => 0.18 |
2018-06-20 14:32 | Kunda1 | Summary |
Slow performance using trim tool due to Solver => Slow performance using trim tool ( |
2018-06-20 14:32 | Kunda1 | Note Added: 0011454 | |
2018-09-30 16:28 | wmayer | Status | confirmed => closed |
2018-09-30 16:28 | wmayer | Resolution | open => fixed |
2018-09-30 16:28 | wmayer | Note Added: 0011878 |