arch viz using client DWG files
Posted: 24 July 2018 10:06 PM   [ Ignore ]  
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Seems I cant find this anywhere! Hopefully someone can help.

I’m looking for some tutorials that cover importing DWG files, (Plans / Sections / Elevations) and using them as reference to model over / snap too, as I would with Max for ArchViz.

It would be great to see the process of “cleaning up the DWG file” - aligning it correctly to model over, and also what happens if the plan is updated and you get a new CAD file for example - how do you update something that’s been imported? (If its even possible.) Whats the best way to set all of this up and have plans and elevations within C4D to model over.

I have trawled the internet and Youtube but I can only find examples showing how to trace over a JPEG plan, or import a ready built model from SketchUp or similar. Workflows that I wont be using. (I work as an Architect, I can produce the DWG files, which I then want to model and render with C4D.)

I have imported DWG files into C4D but also can’t seem to get my head around scale in C4D, importing a DWG in meters (where the DWG file itself is in meters) yields some strange results.

To summarise, I’m trying to understand and learn how an ArchViz practice imports Architects drawings into c4D to model and render.

Any help much appreciated.

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Posted: 25 July 2018 06:41 AM   [ Ignore ]   [ # 1 ]  
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Hi Andy_b,

You have a 3D DWG and you want to use it as 2D to model over?

Perhaps:
https://www.cineversity.com/vidplaylist/house_builder_preset/house_builder_preset_part_01

Scale of a project and other things like units can be set here:
https://help.maxon.net/us/#DDOC-DOCUMENT_GROUP_PROJECTSETTINGS
Then import:
https://help.maxon.net/us/#FDWG
It would be wise to know any measurement from the source application, so you know what to do while importing and setting up the project.

Where do you get he DWG file from? To my knowledge, there is no workflow that lets you “clean up” a DWG file ā€“ and ā€“ have the option to update the DWG based results later on with a new model, while retaining the changes.

This works much better with matching applications, as there are established workflows. (Architecture, while previz is needed, will change. A good way to get this update quickly will be mandatory for typical work)

Having integrated in the early ‘90s my several teams (architects and CAD modeler) between drawing boards and Allplan, while doing the visualization with 3rd party renderer, I found todays options much better—of course. You will find in the Nemetschek Group quite some solutions for that. I loved the ease of ArchiCad, but in the office we used Allplan (our projects were more in the two and three digit million level), based on the great connection to engineering packages. Not to forget VectorWorks. With ArchiCad I used every single output option, one after the other to explore what would work best as “render package”, back then. Today you will find a strong pipeline to Cinema 4D with it. And versioning /updating is part of it. I’m not a sales representative, but I start to sound as one. So I have to stop here.


https://www.cineversity.com/vidplaylist/archicad_to_cinema_4d/archicad_to_cinema_4d_part_01

https://www.cineversity.com/vidplaytut/vectorworks_to_cinema_4d_part_1

https://www.cineversity.com/vidplaytut/render_a_kitchen_concept_in_virtual_reality_02_import_a_sketchup_kitchen

https://help.maxon.net/us/#44461
https://help.maxon.net/us/#54275

https://www.nemetschek.com/marken/graphisoft/

http://www.vectorworks.net/training/2017/getting-started-guides/site-design/import-dwg


My best wishes.

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Posted: 25 July 2018 10:04 PM   [ Ignore ]   [ # 2 ]  
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Hi,

Thanks for the reply. I should add that I am an architect. Here in the office we use MicroStation although I am familiar with AutoCad too. I produce my own 2D DWG files that I want to take into c4D to model and render. (I already have c4d licence with Vray.)

I guess I’m really looking for help when it comes to importing 2D dWG files into c4d. I can do it, but the dwg comes in as a bunch of splines and lines that are live in the file. In terms of the cleaning up I heard that the best thing to do was to join them up so that its one spline, is this right? - but then what happens if the plan is updated? In Max for example, the DWG file is referenced into Max, if you update the dwg the same file in max automatically updates. Typical ArchViz workflow for max, but how does it work in c4d? Regards to these type of issues there really is no tutorial anywhere that I can find.

Thanks for the links but these are not quite what I’m after. I’m specifically interested in 2D dwg files or equivalent coming into c4D for modelling and rendering purposes. I want to compose all 3D elements inside of C4d.

In a nutshell, the basic question is, how do 3D artists use 2d dWG files in Cinema? How do they set them up?

Thanks, Andy

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Posted: 26 July 2018 05:41 AM   [ Ignore ]   [ # 3 ]  
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Hi Andy,

I have send you an upload link for a DWG file, so I can create at least a little bit a long the information you know.
Please just a few typical shapes that have no privacy.
I would always recommend, As long as the workflow is not stable, to include a cube or square with a fixed measurement, so you have a reference.

I grew up in a construction company and learned there a lot, before working as an architect. CAD came later, so I know both worlds very well. The idea to just visualize from 2D and not use the 3D data from the start for blue prints for example seems to a certain degree workable, but I guess it would be much more productive to start with a full 3D model. I bought ArchiCad for my little projects, so we didn’t have them floating in the office, and it worked very well. A single home was done typically in a weekend, and all the options to pull anything (incl. arch-viz) from it.

I will wait for your dwg file., perhaps we should continue in the QA forum then.

Cheers

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Dr. Sassi V. Sassmannshausen Ph.D.
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Posted: 26 July 2018 08:25 AM   [ Ignore ]   [ # 4 ]  
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Hi Andy,

I didn’t got a file, so I used the Auodesk sample, just as native dwg as it gets.

Here is a one minute run down of how I would get the import scale parameter and use it to get from a spline to a raw build. Note that the math can be down in the entry field directly. The bevel is used on the end, to get a more natural appearance, since sharp edges are a dead give away for CAD models, and since we have that fast option to improve thingsā€¦
I hope that helps. You can set this scale value for good in the preferences (cmd+e). This is how I would do it from a spline “blue print” if no CAD would be available. For visualization, perhaps it is best to check what you really need and model the walls instead from the “ground”. Anyway, Each project might cause a different way to set it up. Some building might even doable to a large degree just procedural, e.g., with MoGraph.

Screen capture:
https://www.amazon.com/clouddrive/share/3Dzp5MPe5Just8IR9FH1vyaJWCzkguAV2pneqlEBG01

You might explore the option to add some points to the splines, to get a better mesh, e.g., between two windows, set a point into the spline.

All the best

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Dr. Sassi V. Sassmannshausen Ph.D.
Cinema 4D Mentor since 2004

Photography For C4D Artists: 200 Free Tutorials. Texture, Panorama, HDRI, Camera Projection, etc.
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Posted: 01 August 2018 03:03 AM   [ Ignore ]   [ # 5 ]  
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Hi,

Many thanks for the screen grab, Ill check that properly this evening and provide a proper response too. In the meantime I have sent you a typical DWG file so lets see what you make of that and if you could screen grab a workflow for working with that file.

Sorry for the late reply, really appreciate the help!

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Posted: 01 August 2018 09:04 AM   [ Ignore ]   [ # 6 ]  
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Hi Andy,

Please check out the news:
https://www.maxon.net/en/products/new-in-release-20/overview/
more specifically
https://www.cineversity.com/vidplaytut/c4d_r20_import_catia_step_iges_solidworks_jt_cad_files_in_cinema_4d
Perhaps there is a better way for you in the next release.

A few points after opening the file:

The scale is an estimate, based on the stove. If I open the file with Scale set to 1 and cm things get rather large and the apartment is rather super small. The Top Parent is too far away for anything to allow for a comfortable work. Since it is a visualization, the orientation should be comfortable as well.
The orientation and the large distance to the Parent Null gives me the idea that this is a “cut out” from a larger object. So, if that is a multi-angle object after all, you might find a different angle.

Pretty much no line creates a closed spline. So, no quick pick up and extrude.
Overlapping wall drawings indicate a CAD work-habit that would not allow for a precise material volume estimation, but I guess it was 2D and not 3D to begin with, so that is certainly no concern here anyway.
The windows are not sitting in a wall, they kind of draw the wall.

All of that leads me to:

If you ask me, the given data is more like blueprints that one places under transparent paper and starts “inking” from there.
In terms of C4D “inking” this would mean here, to take the Spline-Pen, set to Linear. Then trace by hand.
We have done this back in that days often, start from scratch and won awards anyway with the final visualization. It is nice to work natively, but yes, it is a time investment and that might be not really working if strong competition is given.

It seems to me that the source application is created only in 2D. One can’t make sections on different hight-levels for example with 2D data sets, which would otherwise allow for a wall plan without windows and doors, but if 2D is the only export option, that is the way you have to work.

I can’t shake the feeling that there must be more, there must be a better way. Here I can see no really advantage of the CAD material (expect snapping) over a blue print. Which results only to start over and use the given information as starting/snapping points. See the short screen capture. I keep them at one minute, so they are not seen as tutorial nor 1on1 stuff. I only compress the time here often, You can download these one minute clips of mine and stop at any point more easily.

The first thing that I did, was to switch off the Instances, as they seem to be given for all Null Parents in the file, and so doubling the information.

The scale was way off with a setting to 1 while being in cm. You have given no reference of how you want to have it, since I worked two decades in the metric system, I would prefer that of course. Anyway, the stove was used here as a standard
https://www.appliancesizes.com/ranges/
The scale to import was 100.

I replaced the parent with a localized parent, as you can see, I make it first a child of an element, to get the local position, then all of these elements will be child objects of it, while zeroing out the parent. Now using the H or s key to center things will work. Before, it was just ugly.

I have “traced” only the floor to keep it short, but once you get a hang of the perpendicular snapping/guides, you will be very fast. I work again here with a spline, but polygons (Pen Tool) can do the same: Selected polygons can be extruded, perhaps a faster way for you. However it is a artist decision what will work best.

Here is the screen capture:
https://www.amazon.com/clouddrive/share/C30JJIV2FMw4hlGWIKldTVRSFoVtpOu23Qejqb5qtCR

My best wishes for your projects.

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Dr. Sassi V. Sassmannshausen Ph.D.
Cinema 4D Mentor since 2004

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Posted: 01 August 2018 12:09 PM   [ Ignore ]   [ # 7 ]  
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P.S.: The Polygon Pen Tool to create part of the wall. The screen shot contains parts from the Content Library, they fit right into it, without scaling, so something must be right wink

Screen shot/screen cpature
https://www.amazon.com/clouddrive/share/1cqAYlNaP2LL1PGsNmzh332g7I7YDdRlmMuRCiy651w

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Dr. Sassi V. Sassmannshausen Ph.D.
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Photography For C4D Artists: 200 Free Tutorials. Texture, Panorama, HDRI, Camera Projection, etc.
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