To see an overview of the revisions in a model, go to the models page, and click on a model. You will then be directed to the overview page that belongs to that model.

The model revision overview shows us the model revisions present in the project. By clicking on a model revision one will be directed to the revisions page. One can then click on "Import" and upload a new revision model.

The following topics will be described in this article:

If you are an administrator or have gotten access to either creating models or downloading and exporting models in project settings you will see some buttons on the top right of the model's page.

Click on the pencil icon to change the name of the model

To create a thumbnail for your model see here.

If you have gotten access to uploading model revisions from in project settings you will be able to see an import button on the top right of the revisions section:

This is done by choosing an IFC file from your hard drive.

Although other filetypes can be previewed in the documents section, only IFC files are accepted in the models section.

When uploading you will be asked to enter a comment that describes this upload (brief explanation to the project participants about what is new in the revision being uploaded). Click "send" to start the upload process.

When the process is complete Catenda Hub analyzes the IFC file and generates the geometry in the background. For large models it can take some time before the file is ready to be worked on in the viewer. If you wish you can exit Catenda Hub, geometry generation happens uninterrupted anyway. When importing is complete a notification will pop up in the menu bar in Catenda Hub and additionally an email will be sent to you stating that a new version is uploaded to a model for which you have access.

It is possible to open specific models in 2D and 3D by clicking on their respective buttons.

If you have access to downloading models you can click on the download button to download the latest revision of a model.

When you open up Catenda Hub you start with fresh memory.
As soon as you load a model in 3D, whether this is via the models section, documents section or 3D viewer revision selector, the model will be in memory.
Even if you close the 3D viewer or click on 3D to disable the model again.
This makes it so that if you would click on 3D again next time, your model will be enabled a lot quicker!
The first time it might take some time to load into memory but then you can easily turn it on and off.
The model will stay in memory until you refresh the page upon which all models get unloaded.
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One drawback of this is that, as you have noticed in many intensive Japanese projects, the browser cannot always handle having all these models loaded in memory.
If you notice performance is getting slower because your browser is close to the memory limit you can open up the model overview for models you have previously disabled and see the following message:
"This model is hidden but still loaded in memory. To free up some memory click here to unload the model:"

Here you can and click on unload in the message of your screenshot.
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It can be hard to remember which models you previously loaded and it is pretty fast to load in models so If you are close to the limit I would recommend you refresh the page and open up the models you want instead of going into each one and unloading them.

If you have the model loaded in 3D by having clicked on the 3D button of one of the revisions you will be able to see model transform settings at the bottom of the model overview page.
These transition settings will allow you to visually move your model in 3D.
Keep in mind that this does not change your IFC file which will still be at the original location when you export it.

The axis of rotation will be the center of the model seen from above.

By clicking on a revision you will be taken to the page of that revision