is there any way to revive data about what has been changed between versions (remove and add and modify):
via forge Model Derivative API, now I am able to get all the metadata of any Revit files but in total so I am not sure what elements added or .....
the problem we have a lot of files, and it's really hard to run a test to compare modes for each object
thank you :)
I am not aware of any built-in BIM360 or Forge functionaloity for obtaining that information.
I would suggest that you very clearly define exactly what information you wish to keep track of and determine how that can be obtained from a model, e.g., as you suggest, via the Forge Model Derivative API.
Then, you can create a snapshot of that data yourself and implement the functionality to track changes in it as you wish.
The Buiilding Coder discusses and shows how to solve the exact same task for Revit BIMs using the Revit API on the Windows desktop:
Tracking Element Modification
Implementing the TrackChangesCloud External Event
Those articles provide ideas and guidelines on some aspects to take into consideration addressing the same task in Forge.
Related
We are currently translating, downloading and viewing models within our application using the derivatives API, forge viewer, and targeting the SVF format. I am exploring doing the same thing using the SVF2 format but I have found evidence that this is not supported (for various reasons).
https://aps.autodesk.com/en/docs/model-derivative/v2/developers_guide/basics/preperation/
"...This means that SVF2 derivatives cannot be downloaded for offline viewing."
Wondering if this documentation is stale and this is actually possible now, or might be in the near future. I am looking for a concrete answer on this before I explore this any further. Thanks.
Currently there is NO public sample code that demonstrates how to download and view SVF2 in Forge Viewer. Only SVF1.
For SVF2, once you have figured it out (it's not that hard to download the 1000's mesh pieces), you'll need to host these mesh bits statically via the web-socket protocol. Finally, point Forge Viewer to your new host.
Don't forget to cache the viewer3d.min.js file, to comply with the EULA (found in the header). Since it's a cache, you'll need to show that the device can pull this file directly from Autodesk servers, when a cache flush occurs.
That's how I would do it.
I am looking for a solution to extract drawings information (such as drawing, title, revision etc.) from multiple Revit models accommodated in BIM360.
I assume that Forge API can be helpful on this point, yet I am still trying to figure out where to start from.
In addition, my current team's technical abilities are limited to a good level of Dynamo and Python.
What would be your suggestion in terms of overall workflow?
Yes, the Autodesk Platform Services (formerly Forge) can help with this. For example, you could use the Data Management API to programatically browse through existing designs in BIM360, and the Model Derivative API to access all the information that was extracted from these designs (3D views, 2D sheets, metadata, etc.). This tutorial could be a good starting point: https://forge-tutorials.autodesk.io/tutorials/hubs-browser/.
However, keep in mind that APS is a cloud development platform, meaning that some basic understanding of web/server development is expected.
After showing the house to the forge viewer using a Ravit file, the user wants to modify the contents of the viewer and receive it as a Ravit file again. What function should I use to implement the above?
https://learnforge.autodesk.io/#/
I referred to it.
my project
I make input data and transfer this to design automation and get output file and file to translate viewer (this is 2 minutes).
This process is very slow I want better then this process.
https://www.autodesk.com/autodesk-university/class/Its-Not-Too-Late-Automate-Using-Forge-Design-Automation-Inventor-2021#video
This video looks very fast on work process. How to get fast work process like this video?
Thank you
The Forge Viewer is a viewer, not an editor.
The Forge viewer displays the translated version of a seed CAD model, in this case, a Revit RVT BIM.
You cannot edit or modify the CAD seed file in the viewer.
To achieve such a modification, you have to either use the original modelling software, in this case, Revit on the Windows desktop, or you can use the Forge Design Automation API for Revit.
That is what was used to create the Inventor sample you refer to.
Oops... re-reading your question, I see that you are already using design automation yourself as well. Congratulations on that.
However, there is no guarantee on the turn-around time for this process. The video may very well have been edited to eliminate a waiting period, of the user creating the video may just have been very lucky to achieve a faster turn-around time.
I am checking for you with the Forge team whether they used any additional tricks to speed things up in the video or in the true real-time processing. They confirm:
For Revit, a basic DA job should take up to 30-40 secs for the processing time alone. The derivative job for translation to viewer format could take another minute. So, 2 mins is expected. The sketch it demo video has a timer on the side to indicate real time.
I've been trying to encourage some of our less Revit-savvy building services engineers to utilise the Autodesk Viewer product. Unfortunately though, I have encountered a couple of problems, one of which I think I have solved and one which I am guessing is more to do with the Autodesk Viewer Applications programmed interaction with the model derivative API.
Initially I uploaded our services model with supporting architectural and structural models but the phase the solitary 3D view created in the viewer was "Existing" with a filter of "Show All". I managed to get around this by creating a 3D view in each model just called "3D" and setting the phase and filter as I like. Happy days.
Could this also have been better solved by setting generateMasterViews to true during the POST job on a custom Forge viewer app?
However, I am only getting some elements from the services model come through into the Autodesk Viewer application. Most notably it's missing ducts, sanitary pipework, cable trays, radiators. In the "3D" 3D view I have created everything is phased correctly, no issues from worksets, visibility graphics, view discipline is coordination (doesnt work to change to mechanical) and everything looks hunky dory in Revit. In the viewer though it's a different story. Even if I upload the services model on it's own. Strangely, in the 2d sheet views all the equipment and infrastructure is there fine, just in 3D it is now.
So my knowledge of Javascript and the Forge API is quite rudimental but I'm guessing the problem is with Autodesk Viewer's implementation of the model derivative API for when the model is translated to svf.
Does this sound correct?
Could it a bug within Autodesk's viewer app? I'm not too sure what the best Autodesk forum to post in would be.
Could it be a bug within the model derivative API? Or is it a setting that is beyond my knowledge?
I guessing I'm at a place where what I'm really after is a custom Forge viewer application to design in the functionality I am after, in this case control of phasing in the .svf file output and ensuring everything is coming through in the view.
Not the most interesting post by any stretch and if you're still reading now, thanks. But I'm sure I can't be the only one experiencing this problem. While I'd love to share a model to demonstrate whats happening, it's commercially sensitive unfortunately.
If anyone can shed a more technical light on
Cheers,Pete
Hi please make sure those elements are visible in 3D views and those 3D views are chosen in the publish settings of the Revit UI. Otherwise, the Model Derivative API will translate the default 3D view called {3D} only that might not contents proper element visibility configurations.
If this issue still persists after setting this up, please consider providing a none confidential model to forge[DOT]help[AT]autodesk[DOT]com for investigations. Thanks!
I need to get room/area objects with the hierarchy of linked objects from the Revit model via Forge. Right now I am using this project as a starting point. Unfortunately, the room information is lost. As far as I understand, it is removed during the translation process. There are some workarounds like this one, but it doesn't seem to work for our case. Is there any straightforward way to retrieve room information from rvt in Forge?
Although there is not directly way to get room information via the Forge translator, there are still some workarounds to archive this:
Open Revit project with room elements only via the Navisworks, and upload to Forge for translation, use this result as the secondary model of your viewer app as well.
Extract room info. and object relationships via Revit API, and use external mapping feature of the Forge Viewer to rebuild partial relationships between elements and rooms, if room geometry info. is not required.
Hope this help.
Unfortunately room information is not exposed through the Forge translation at the moment. We have a change request pending about it because several developers have been asking this feature. It will be provided in the future but at the moment the best workaround is the link that you pointed out. Sorry for the bad news.