Where are the SNAP tools in Sketch Workbench?

Post here for help on using FreeCAD's graphical user interface (GUI).
Forum rules
and Helpful information
IMPORTANT: Please click here and read this first, before asking for help

Also, be nice to others! Read the FreeCAD code of conduct!
kisolre
Posts: 2116
Joined: Wed Nov 21, 2018 1:13 pm

Re: Where are the SNAP tools in Sketch Workbench?

Postby kisolre » Sun Apr 05, 2020 2:41 pm

Have you tried On/Off? It works as expected with that edge also:
phpBB [video]
User avatar
geolux
Posts: 70
Joined: Sat May 04, 2019 10:27 am
Location: Italy
Contact:

Re: Where are the SNAP tools in Sketch Workbench?

Postby geolux » Sun Apr 05, 2020 2:53 pm

Yes I had understood and it didn't work, now I have closed FC and opened it again and the constraint work on the old line too.
Thanks
:cry:
chrisb
Posts: 24293
Joined: Tue Mar 17, 2015 9:14 am

Re: Where are the SNAP tools in Sketch Workbench?

Postby chrisb » Sun Apr 05, 2020 3:59 pm

kisolre wrote:
Sun Apr 05, 2020 1:57 pm
Sorry for the noise
No problem!

Besides the Autoconstraint issue, the constraints are a mess. Geolux, you should try to use geometric constraints instead of dimensions. It minimizes cluttering the screen and usually makes you understand your sketch better. Whenever you repeat a dimension it has a bad smell, which means you should think about the repitition at least twice.
chrisb
Posts: 24293
Joined: Tue Mar 17, 2015 9:14 am

Re: Where are the SNAP tools in Sketch Workbench?

Postby chrisb » Sun Apr 05, 2020 4:16 pm

Furthermore I see the message Sketcher constraint number 85 is malformed! in report view if I recompute the sketch. Deleting this will show the same for constraint number 84, 83, ... I will investigate this later, if noone else has a good idea where it comes from.
User avatar
geolux
Posts: 70
Joined: Sat May 04, 2019 10:27 am
Location: Italy
Contact:

Re: Where are the SNAP tools in Sketch Workbench?

Postby geolux » Sun Apr 05, 2020 4:48 pm

Sorry Chrisb, how can I draw correctly and in scale, my building if I don't put every dimension (edges, diagonals, wall depth ...)?

I'm experimenting witch is the best way to produce correctly and speedly the 3D model of an older building (the rooms not are regular), but for the moment ... I haven't found it :)
I use most of commercial BIM software like Archicad, Revit, etc but I love and use most other Open Source Software, like QGis, CloudCompare, MeshLab, etc.
chrisb
Posts: 24293
Joined: Tue Mar 17, 2015 9:14 am

Re: Where are the SNAP tools in Sketch Workbench?

Postby chrisb » Sun Apr 05, 2020 4:49 pm

Here is what I found, and two questions remain:
- How was it possible to create such a constraint, it seems to be a coincidence of a point and a line?
- Why didn't the message name the right constraint?
geolux wrote:
Sun Apr 05, 2020 2:53 pm
ping
While investigating this issue I had a closer look at your constraints, and things seem to be worse than expected. I would recommend to read my Sketcher lecture. So I don't have to repeat it all here. Most prominent issues: 1) minimize number of dimensions 2) use vertical constraint on vertical lines 3) use horizontal constraint on horizontal lines.
Attachments
Progetto_cb.FCStd
(3.5 KiB) Downloaded 1 time
chrisb
Posts: 24293
Joined: Tue Mar 17, 2015 9:14 am

Re: Where are the SNAP tools in Sketch Workbench?

Postby chrisb » Sun Apr 05, 2020 4:56 pm

I see each of these at least twice: 4920, 4930, 4650, 250, 230.
Snip macro screenshot-5b9491.png
Snip macro screenshot-5b9491.png (50.07 KiB) Viewed 48 times
I may have to revise my advice with the vertical and horizontal constraints though, it is possible that those lines are indeed not vertical or horizontal - my bad.
User avatar
geolux
Posts: 70
Joined: Sat May 04, 2019 10:27 am
Location: Italy
Contact:

Re: Where are the SNAP tools in Sketch Workbench?

Postby geolux » Sun Apr 05, 2020 5:02 pm

Ok Chrisb, I'll sure read your post.
Just for answer you. I can't use vertical and horizontal constraints, just because there are not true vertical and horizontal walls.
Can you send me the link to your post?
Thank you again
User avatar
geolux
Posts: 70
Joined: Sat May 04, 2019 10:27 am
Location: Italy
Contact:

Re: Where are the SNAP tools in Sketch Workbench?

Postby geolux » Sun Apr 05, 2020 5:11 pm

chrisb wrote:
Sun Apr 05, 2020 4:56 pm
I see each of these at least twice: 4920, 4930, 4650, 250, 230.
Snip macro screenshot-5b9491.png
I may have to revise my advice with the vertical and horizontal constraints though, it is possible that those lines are indeed not vertical or horizontal - my bad.
In the architectural survey and its drawing, specially for old building, you can't are sure that dimensions before and behind the wall are the same. I need to set the two dimensions and refer it at the same object (as a door), onward and behind, to draw correcly the right and the left vertices.
But YES I'm aware that I messed up :), but is just an experiment
User avatar
geolux
Posts: 70
Joined: Sat May 04, 2019 10:27 am
Location: Italy
Contact:

Re: Where are the SNAP tools in Sketch Workbench?

Postby geolux » Sun Apr 05, 2020 5:19 pm

Referring to your image and at the "duplicate" dimension as 0,25, how can you see, if I change the second dimension (and it could be), the second room translate at right.
So, to confirm its position I need to acquire on site di measure and put both dimension in sketch.
And same talk about other dimension and diagonal
Attachments
Annotazione 2020-04-05 191307.jpg
Annotazione 2020-04-05 191307.jpg (300.97 KiB) Viewed 38 times