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IDProjectCategoryView StatusDate SubmittedLast Update
0001937FreeCADBugpublic2015-01-28 10:532017-05-30 13:53
Reporterulrich1a Assigned Towandererfan  
PrioritynormalSeveritymajorReproducibilityalways
Status closedResolutionfixed 
Fixed in Version0.17 
Summary0001937: Projections of helix coils are largely disturbed and unusable in technical drawings
DescriptionI made an example to show the problem. See http://forum.freecadweb.org/viewtopic.php?f=3&t=9513#p77088
The example is also uploaded here.
I made test under windows and Debian with the development version 0.15.4527
The problem shows up with OCCT 6.7.1 and 6.8
Steps To Reproduce- Make a helix coil by sweeping a circle along a helix.
- Project the shape in a drawing
- Depending on the dimensions different failures in the projection are exposed: Hidden lines are not removed; curves are disturbed, Lines are missing
Tagsbump, OCC Bug, upstream
FreeCAD Information

Relationships

related to 0001612 closedyorik Draft Projecting arcs to SVG gives wrong results under certain angles 

Activities

ulrich1a

2015-01-28 10:53

reporter  

helix_projection.FCStd (Attachment missing)

shoogen

2015-01-28 11:00

developer   ~0005744

There are two kinds of problems involved.
The distortion of curves is only present in the Drawing module.
The missing and falsely visible lines can be reproduced by Draft/2DShapeViews and are thou likely caused the hidden line removal algorithms of OCCT

shoogen

2015-02-03 12:17

developer   ~0005758

http://tracker.dev.opencascade.org/view.php?id=25776

Kunda1

2017-03-25 11:56

administrator   ~0008703

Original bug reported on forum by Ulrich:

OS: Windows 7
Word size of OS: 32-bit
Word size of FreeCAD: 32-bit
Version: 0.15.4527 (Git)
Branch: master
Hash: 0da2e4c45a9a259c26abd54c2a35393e1c15696f
Python version: 2.7.8
Qt version: 4.8.6
Coin version: 4.0.0a
OCC version: 6.7.1
helix_projection-original-ulrich-OCC6.7.1.png (Attachment missing)

Kunda1

2017-03-25 12:00

administrator   ~0008704

Last edited: 2017-03-25 12:07

 NormandC reports the following in OCC 6.8.0 (improvement):
OS: Ubuntu 16.04.2 LTS
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.16.6707 (Git)
Build type: None
Branch: releases/FreeCAD-0-16
Hash: 5465bc47c95db45e0be85dc0e2872419efadce0f
Python version: 2.7.12
Qt version: 4.8.7
Coin version: 4.0.0a
OCC version: 6.8.0.oce-0.17
Forum thread: https://forum.freecadweb.org/viewtopic.php?f=3&t=9513&start=10#p167103

FC_ulrich1a_helix_projection_6.8.0.oce-0.17.png (Attachment missing)

Kunda1

2017-03-25 12:03

administrator   ~0008705

Last edited: 2017-03-25 12:08

 NormandC reports the following in 7.10 in Drawing WB (improvement but still not correct)
OS: Ubuntu 16.04.2 LTS
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.17.10611 (Git)
Build type: None
Branch: master
Hash: 44a9ecd25f27ec3efe52c9de9c95ef2b3e19dd17
Python version: 2.7.12
Qt version: 4.8.7
Coin version: 4.0.0a
OCC version: 7.1.0
Forum thread: https://forum.freecadweb.org/viewtopic.php?f=3&t=9513&start=10#p167103

FC_ulrich1a_helix_projection_0.17-git-DrawingWB-OCC7.1.0.png (Attachment missing)

Kunda1

2017-03-25 12:06

administrator   ~0008706

Last edited: 2017-03-25 12:08

 NormandC reports the following in 7.10 in TechDraw WB (Regression!)
OS: Ubuntu 16.04.2 LTS
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.17.10611 (Git)
Build type: None
Branch: master
Hash: 44a9ecd25f27ec3efe52c9de9c95ef2b3e19dd17
Python version: 2.7.12
Qt version: 4.8.7
Coin version: 4.0.0a
OCC version: 7.1.0
CC @wandererfan
Forum thread: https://forum.freecadweb.org/viewtopic.php?f=3&t=9513&start=10#p167103

FC_ulrich1a_helix_projection_0.17-git-TechDrawWB-OCC7.1.0..png (Attachment missing)

Kunda1

2017-05-30 10:32

administrator   ~0009191

FreeCAD Pull Request 786

wmayer

2017-05-30 13:53

administrator   ~0009193

https://github.com/FreeCAD/FreeCAD/commit/052704eb0c334f7c14a92977a176c5a1c9b8c152
https://github.com/FreeCAD/FreeCAD/pull/786

Issue History

Date Modified Username Field Change
2015-01-28 10:53 ulrich1a New Issue
2015-01-28 10:53 ulrich1a File Added: helix_projection.FCStd
2015-01-28 10:57 shoogen Status new => acknowledged
2015-01-28 11:00 shoogen Note Added: 0005744
2015-01-28 11:02 shoogen Relationship added related to 0001612
2015-02-03 12:17 shoogen Tag Attached: OCC Bug
2015-02-03 12:17 shoogen Note Added: 0005758
2017-01-15 04:44 Kunda1 Tag Attached: upstream
2017-01-27 01:37 Kunda1 Tag Attached: bump
2017-03-25 11:56 Kunda1 File Added: helix_projection-original-ulrich-OCC6.7.1.png
2017-03-25 11:56 Kunda1 Note Added: 0008703
2017-03-25 12:00 Kunda1 File Added: FC_ulrich1a_helix_projection_6.8.0.oce-0.17.png
2017-03-25 12:00 Kunda1 Note Added: 0008704
2017-03-25 12:03 Kunda1 File Added: FC_ulrich1a_helix_projection_0.17-git-DrawingWB-OCC7.1.0.png
2017-03-25 12:03 Kunda1 Note Added: 0008705
2017-03-25 12:04 Kunda1 Note Edited: 0008704
2017-03-25 12:06 Kunda1 File Added: FC_ulrich1a_helix_projection_0.17-git-TechDrawWB-OCC7.1.0..png
2017-03-25 12:06 Kunda1 Note Added: 0008706
2017-03-25 12:06 Kunda1 Note Edited: 0008706
2017-03-25 12:07 Kunda1 Note Edited: 0008704
2017-03-25 12:08 Kunda1 Note Edited: 0008705
2017-03-25 12:08 Kunda1 Note Edited: 0008706
2017-03-27 08:07 Kunda1 Status acknowledged => confirmed
2017-05-30 10:32 Kunda1 Note Added: 0009191
2017-05-30 13:53 wmayer Assigned To => wandererfan
2017-05-30 13:53 wmayer Status confirmed => closed
2017-05-30 13:53 wmayer Resolution open => fixed
2017-05-30 13:53 wmayer Fixed in Version => 0.17
2017-05-30 13:53 wmayer Note Added: 0009193