Curves workbench
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Re: Curves workbench
that works,
nice!!
thanks
nice!!
thanks
Re: Curves workbench
now I have another problem.
In the test file I will attach. When I select the lines in order from top to bottom and then the left and last the right line and then try to make a Gordon surface. The whole freecad freezes which leaves two questions:
- why can't I create this gordon?
- it freezes, is this a bug?
thanks,
Karl
In the test file I will attach. When I select the lines in order from top to bottom and then the left and last the right line and then try to make a Gordon surface. The whole freecad freezes which leaves two questions:
- why can't I create this gordon?
- it freezes, is this a bug?
thanks,
Karl
- Attachments
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- 1.jpg (8.17 KiB) Viewed 1803 times
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- test.FCStd
- (14.93 KiB) Downloaded 22 times
Re: Curves workbench
Curves must have a grid-like pattern.
The black curve that joins the bulb of the green curve isn't compliant with that requirement.
The black curve that joins the bulb of the green curve isn't compliant with that requirement.
Re: Curves workbench
ok
so how I would connect something like this to a surface?
so how I would connect something like this to a surface?
Re: Curves workbench
Post amended to save thread space.
Last edited by onekk on Mon Mar 13, 2023 7:29 am, edited 1 time in total.
GitHub page: https://github.com/onekk/freecad-doc.
- In deep articles on FreeCAD.
- Learning how to model with scripting.
- Various other stuffs.
Blog: https://okkmkblog.wordpress.com/
- In deep articles on FreeCAD.
- Learning how to model with scripting.
- Various other stuffs.
Blog: https://okkmkblog.wordpress.com/
Re: Curves workbench
gordon doesn't like this kind of corner.
it's better to use filling feature for a flat surface here.
it's better to use filling feature for a flat surface here.
- Attachments
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- Capture.JPG (20.83 KiB) Viewed 1637 times
Re: Curves workbench
Post amended to save space on thread.
Last edited by onekk on Mon Mar 13, 2023 7:30 am, edited 2 times in total.
GitHub page: https://github.com/onekk/freecad-doc.
- In deep articles on FreeCAD.
- Learning how to model with scripting.
- Various other stuffs.
Blog: https://okkmkblog.wordpress.com/
- In deep articles on FreeCAD.
- Learning how to model with scripting.
- Various other stuffs.
Blog: https://okkmkblog.wordpress.com/
Re: Curves workbench
I am trying to make a simple curved object. It is a wingtip but it could be a boat or canoe. I want to parameterize it with a spreadsheet. I have tried several approaches. Using a ruled surface, sweep2rails, and Approximate works but only to the outer profiles. I can not get the point cloud to extend to the front and back (bow & stern). Sometimes the Gordan surface works and sometimes it fails. Often when it fails, it gives the spinning wheel and requires killing freecad.
I would certainly appreciate any suggestions on a workflow for creating this type of object. I suspect, there are restrictions on the bow and stern profiles but I don't currently understand them.
Thanks,
I would certainly appreciate any suggestions on a workflow for creating this type of object. I suspect, there are restrictions on the bow and stern profiles but I don't currently understand them.
Thanks,
Code: Select all
OS: Arch Linux
Word size of FreeCAD: 64-bit
Version: 0.21.0.31917 (Git) AppImage
Build type: Release
Branch: master
Hash: 4639283b459f9ff9093e289908cc003db8745b82
Python 3.10.9, Qt 5.15.6, Coin 4.0.0, Vtk 9.1.0, OCC 7.6.3
Locale: English/United States (en_US)
Installed mods:
* Plot 2022.4.17
* Curves 0.6.5
* AirPlaneDesign 0.4.0
* CurvedShapes 1.0.4
- Attachments
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- WingTip5.FCStd
- (610 KiB) Downloaded 27 times
Re: Curves workbench
For Gordon surface you need to have a grid-like pattern :
viewtopic.php?t=29632&start=70#p280130
Same for the approximate tool, where you must provide a list of objects that all contain the same amount of points.
Surfaces that degenerate to a single point at the ends are not supported.
Both tools can only generate curved rectangles (= with 4 sides).
viewtopic.php?t=29632&start=70#p280130
Same for the approximate tool, where you must provide a list of objects that all contain the same amount of points.
Surfaces that degenerate to a single point at the ends are not supported.
Both tools can only generate curved rectangles (= with 4 sides).
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Re: Curves workbench
Have you looked at this thread? viewtopic.php?p=665470#p665470