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Hi, this is my blog, and also a guestbook. I publish stuff I do from time to time. Be welcome and feel at home, have a coffee and don't hesitate to drop me a line or two. All languages are highly welcome, especially the most exotic ones (nederlands, bij voorbeeld...).

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permalink:  542   posted on 12.10.2018 12:14
From lukas alberts
Commenting post 275: Hi Yorick,
where can I see more of Electrical-planing with Freecad?
is it the BIM ready..means the e-plug is a ifc from some company or a exchangeable selfmade one. even the e-cable is ifc?
I need to go seriously into the design with FreeCAd. Looks like it is not long away to a professionel tool. Thanks for that.
Lukas

permalink:  541   posted on 11.10.2018 18:07
From Patrick Depoix
A propos de tes aquarelles, félicitation Yorik, elles sont très charmantes.... et intéressantes architecturalement parlant. Je m'y adonne aussi le plus possible quand je voyage...A+ Patrick.

permalink:  540   posted on 11.10.2018 17:54
From Patrick Depoix
Commenting post 536: >>>By using reference files (I'm not sure the name is really good... Any other idea?) in FreeCAD
Yes Yorik, the stndard name is "assets", I mean, not?

permalink:  539   posted on 10.10.2018 16:10
From Olukwenda
Hi. I am just a fan who just wanted to say hi

permalink:  538   posted on 03.10.2018 18:09
From Yorik
Commenting post 537: Hi Rafael,
Very useful feedback, thanks!! I could indeed do a longer one from time to time...

permalink:  537   posted on 02.10.2018 17:59
From Rafael (bitacovir)
Commenting post 536: Great work Yorik. I just wanted to give my opinion about this 35min video. I do not think it was too long. In fact, I found very useful because I learned a lot seen a clear and correct workflow with BIM WB. All these tips, recommendations and explanations at each step showed that FreeCAD is a comfortable and comprehensible software to perform a BIM project. Many small but useful things that I didn't know. I think you can alternate short videos showing independent features with 30min videos showing these continuous workflows.

in categories  freecad  opensource  permalink:  536   posted on 02.10.2018 2:00
From Yorik

FreeCAD BIM development news - September 2018

Hi folks,

Time for one more of our monthly posts about the development of BIM tools for FreeCAD. This month unfortunately, since I was taking some holiday, travelling (and sketching) for the biggest part of the month, I have less new stuff than usual to show. To compensate, I tried a longer and more detailed video. Looking back at it, I think this is a bit too long, though, so next time I'll get back to a shorter format.

As usual, many thanks to everybody who is backing me up on Patreon, Liberapay, or donated directly to my Paypal account, this is a really amazing experience, I hope you guys feel as thrilled as I do about the progresses we're doing here, each month we have a new layer of paint on the wall, and it begins to form a very solid and coherent compound. I sincerely think some parts of the job are now almost done (basically, BIM modelling itself) and already work as well or even better than many commercial BIM applications. What I am going to concentrate more and more on, in the next months, is the 2D output, ie. how to generate good quality drawings from our BIM models.

I have several threads to explore there, one being of course TechDraw, where we need to optimize things to be able to work with larger models, and integrate better the native TechDraw tools with BIM models, and another thread is the 3D view itself, in order to obtain a more "WYSIWYG" (What You See Is What You Get) workflow, that is, have the 3D view really give you good and useful 2D views of your model. Finally, see how we can tie both these threads. Our OpenInventor-based 3D view has several tools for offline rendering, that is, produce a "copy" of the 3D view that can be used for other purposes, such as saving an image. This could offer us a blind-fast way to generate 2D documents, and could be a very interesting path to explore too.

The video

This month the video is a generic tutorial that shows how to get started with BIM modelling in FreeCAD:

BIM workbench documentation

I've also started working on the documentation of the BIM workbench. As you know, the main effort behind the BIM workbench is to offer a good user experience. This is therefore a very important point. There is still some work to do, but it is there already and usable. It is also something I wanted to do to advocate other Addon workbench developers to use the FreeCAD wiki to write their documentation. The new Start workbench, that has landed in FreeCAD last month, will display links to specific workbench pages on the wiki, so this would be very useful.

past development news articles on github

I also gathered all the development news articles I wrote so far on the github page of the BIM workbench, inside the "wiki" section. Some might find them easier to find and read there than on my blog...

External references

The big, new feature that has landed this month in Arch (and therefore BIM) workbench is the new [External Reference] tool. It basically works like an Xref in AutoCAD, or File Link in Revit (I'm not sure how it's called in other apps...). To resume, it allows to include the contents of one file in another. If the contents of the first file change, what's included in the second file changes too.

Working with reference files has a lot of advantages: One person can work on a part of a model, while others can work on other parts, and everyone can keep working on a separate file. Or you can split big files into smaller, more manageable chunks.

In FreeCAD, it has also a big extra advantage: Like in most parametric modellers, having a lot of individual objects in your model document makes FreeCAD run significantly slower. The 3D view of FreeCAD is capable of rendering several millions of faces without much slowdown (yes we tested), and the OpenCasCade engine is actually very efficient at managing very complex geometry. The problem is the logic. Each new document object created inserts a load of relationships with other parts of FreeCAD, because there are many mechanisms that must run every time you touch an object. Often, these mechanisms need to scan all the objects of the model.

It is interesting to compare this with games. A couple of years ago, the biggest part of the CPU computing occuring when you were playing a modern, resource-intensive game, was to compute the 3D graphics. Now, in some recent games like Kingdom Come (my favourite of the moment), the Artificial Intelligence uses more computing power than the 3D rendering! This is because each character in the game has its own "program" running, all interacting with each other, creating exponentially long chains of computation. Basically the same happens in FreeCAD. Such is the price of parametricism, that you'll have to pay one day, mister Schumacher! (Architects joke, don't worry about it)

By using reference files (I'm not sure the name is really good... Any other idea?) in FreeCAD, you can include the whole content of one file (several objects) as one object in the host file. This reduces dramatically computing time, and allow us to work with increasingly bigger models.

When you create a reference object, you give it a path to another FreeCAD file, then you can choose one of the included shape-based objects inside the file. The implementation is very simple: The Reference object doesn't open the included file. It just unzips the stored brep data of the object you specified. Any object with a shapecan be included, including, and that's the interesting point, BuildingParts. As I explained last month, internally, the BuildingPart always keeps a shape that is a compound of all the shapes of its children. Compound shapes in FreeCAD are very cheap and fast to produce (no boolean operation involved). So you can group anything you want, a whole storey, a whole building, etc... inside a BuildingPart, then include that BuildingPart as one single object inside another model.

The referenced object is a fully valid shape object, that you can move, rotate, duplicate, clone, project in 2D, and snap to it like any other. At the moment, it will be exported to IFC as one monolithic IfcBuildingElementProxy object, that's something to work further on in the future.

If you follow FreeCAD's latest developments, you might be asking yourself why this was not based on Realthunder's Assembly3 branch, which provides about the same functionality? There are a couple of reasons to that, basically because I wanted to try a very simple implementation, while his is rather complex, and also the aim is different: The Assemby3 functionality aims at pretty complex models, with not so much geometry, but with complex hierarchies and relationships. In BIM, we are aiming at very large models with very little or no relationships at all between the included parts. In any case it can certainly be interesting to have both approaches in FreeCAD.

Further immediate development will be the retrieval of colors. At the moment only the shape of included objects is gathered by the reference tool, we need to make the BuildingPart store not only the shapes of its children, but also the face colors, like the Part Compound does. Then we can read that as well when we include an object from another file.

Next, I'll also add an option to have the BuildingPart also store an OpenInventor representation. This will allow us to load only that representation from the included file, not the shape itself. This "lightweight include" would give blind-fast imports, and would have virtually no limit in terms of model complexity. There are a couple of caveats to solve, that I already experimented with the "Hi-Res" mode of Arch objects (snapping and selecting and everything else based on element names doesn't work correctly), which is something realthunder has been able to solve much better in his branch, but there is no reason to not be able to make it work.

FreeCAD for Inventors book

Finally, Sliptonic, a long time FreeCAD developer and main brain behind the Path workbench, has written a new FreeCAD e-book called FreeCAD for Inventors. It is available for purchase on Amazon and Kobo. It uses the same basic structure of the FreeCAD manual, that is, a general walk through the different parts and workbenches of FreeCAD, with a series of pretty interesting exercises. Sliptonic has also paid close attention to the usual requests and difficulties reported by newcomers to FreeCAD, and tries to address them in the book. Definitely a very good entry path into FreeCAD, if you are new to it.

That's it for this month, next month I'll attend the Google Summer of Code Mentors summit in San Francisco (and spend a couple of days in Mexico City on the way back). I'll be sure to dutifully report here.

Cheers!

Yorik


permalink:  535   posted on 29.09.2018 10:38
From Thanks!
Commenting post 321: Awesome work

in categories  sketches  permalink:  534   posted on 23.09.2018 3:22
From Yorik

Urban sketching in Salvador



The drawings I did during the wonderful national encounter of urban sketchers in Salvador da Bahia, Brazil




























in categories  sketches  permalink:  533   posted on 23.09.2018 3:19
From Yorik
A couple of sketches made in Teresina, Piaui







in categories  sketches  permalink:  532   posted on 23.09.2018 3:18
From Yorik
Drawings I did last week in São Luis do Maranhão










in categories  sketches  permalink:  531   posted on 23.09.2018 3:17
From Yorik
Today's sketch at Goethe Institute in São Paulo, with USKSP


permalink:  530   posted on 21.09.2018 23:32
From Yorik
Commenting post 528: Ah, obrigado por avisar! Vou dar uma olhada.. Abraços

permalink:  529   posted on 21.09.2018 23:30
From Yorik
Commenting post 527: Interesting, do you have any link to share? Indeed FreeCAD is a complex and powerful application, and it's very modular (different paradigms can coexist). So it's pretty hard to build good interfaces for it...

permalink:  528   posted on 12.09.2018 19:09
From sergio dias
Olá Yorik, como vai?
há algum tempo percebi que a ferramenta "cut with plane" não está funcionando na versão para windows (64b), nem a versão estável e nem a 0.18x (que é a que eu tenho usado...) acho ela muito importante para corte de paredes especialmente sob telhados. Que tal, assim que for possível, você dar uma verificada? Obrigado pela atenção e pelo excelente trabalho em um software incrível.
sergio

permalink:  527   posted on 10.09.2018 4:59
From Ramayya
Commenting post 512: May I suggest that you look at Apple's Human Interface Guide Lines for OS X and iOS versions of your FreeCAD Contributions?

These guidelines are more human-oriented than others that currently used in FreeCAD. It is very easy to get lost in the very Complex and Powerful application such as FreeCAD.

permalink:  526   posted on 03.09.2018 16:48
From Yorik
Commenting post 525: Hi, it's Blender itself.

permalink:  525   posted on 03.09.2018 14:27
From bori
yorik may i ask, what editor type did you use in your " modeling architecture with precision in blender" ? the one where i can still see my flat cad plan even in perspective view.

permalink:  524   posted on 02.09.2018 23:43
From Yorik
Commenting post 523: I don't know unfortunately, the structural calculation was done by the company who installed the structure...

permalink:  523   posted on 02.09.2018 23:40
From Aya
Commenting post 80: Realy Excellent Project , I want to know the used programs in analysing the structure .