[Solved] Project a 2D and 3D Stair representation since 1D elements

[paullee]

Hello, those are some good looking stairs I attached a file of an idea I had how to do the stairs, you might want to check it out. It could perhaps be made fully parametric if some obstacles are overcomed. I did them in the Link FreeCAD so I hope you won't have problem oppening the file.

Thanks @ABeton !

Looks to be a good algorithm to do a non-regular stairs!


Question:
- trying to look how it is done, recompute() the PathArray / RuledSurface (e.g. 006 / 007), the RuledSurface seems not like the orginal.
- then, the extrusion go wrong
- what is your FC version? (I learnt the PathArray had be revamped)
Thanks.

Screenshot from 2021-04-17 01-27-56.png (220.96 KiB) Viewed 509 times

Screenshot from 2021-04-17 01-30-08.png (231.51 KiB) Viewed 509 times

[ABeton]

Hello, those are some good looking stairs I attached a file of an idea I had how to do the stairs, you might want to check it out. It could perhaps be made fully parametric if some obstacles are overcomed. I did them in the Link FreeCAD so I hope you won't have problem oppening the file.

Thanks @ABeton !

Looks to be a good algorithm to do a non-regular stairs!


Question:
- trying to look how it is done, recompute() the PathArray / RuledSurface (e.g. 006 / 007), the RuledSurface seems not like the orginal.
- then, the extrusion go wrong
- what is your FC version? (I learnt the PathArray had be revamped)
Thanks.

Screenshot from 2021-04-17 01-27-56.png
Screenshot from 2021-04-17 01-30-08.png

I attached some images below, I hope they explain it a little better. And the Path Array didn't work well for me in regular FreeCAD, all the lines were messed up(I see the same in your screenchots), so I used the Realthunder's version of FreeCAD.

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5.png (254.98 KiB) Viewed 502 times

[ABeton]

7.png (235.66 KiB) Viewed 500 times

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9.png (242.75 KiB) Viewed 500 times

6.png (238.21 KiB) Viewed 500 times

I think this principal has potential to become fully parametric, but there are couple of obstacles:
- Path Array command should have the option to incrementaly displace each line on Z axis(in this case I moved everything manualy)
- I am not sure if it is possible to automaticaly select each element in the array in a consecutive order and in this way generate all the ruled surfaces

Maybe there is something more that would be needed to make a functional one click stair command, but I don't have a lot of programing knowledge so I don't know. I could use some sugestions about it.

OS: Windows 10 Version 1909
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 2021.412.22506 +5327 (Git)
Build type: Release
Branch: LinkDaily
Hash: d41e78fe7f9b54eea5977df0a7344331f08445e8
Python version: 3.8.6+
Qt version: 5.15.2
Coin version: 4.0.1
OCC version: 7.5.0
Locale: English/United Kingdom (en_GB)

[paullee]

I think this principal has potential to become fully parametric, but there are couple of obstacles:
- Path Array

Thanks, I see the worflow, this should be able to be automated.

Hope can implemented someday

[jtm2020hyo]

the winner

[jtm2020hyo]

7.png

8.png

9.png

6.png

I think this principal has potential to become fully parametric, but there are couple of obstacles:
- Path Array command should have the option to incrementaly displace each line on Z axis(in this case I moved everything manualy)
- I am not sure if it is possible to automaticaly select each element in the array in a consecutive order and in this way generate all the ruled surfaces

for a parametric control, IMHO we need to use Sketcher WB for XY axis and for z-axis we need Draft WB, I call this edgebinder and pointbnder, with we could already not break anything, I hope we can have this support in the future.

https://forum.freecadweb.org/viewtopic.php?f=3&t=56433

edit: just I wish to mention that RuledSurface does not work like a parametric object, maybe a bug