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Compare Digital Twins with the BIM Viewer

Compare Digital Twins with the BIM Viewer


SiteView enables you to view 3D digital twins (panos) and Building Information Modeling (BIM) files side by side. You can view and navigate each one together (synchronized), or separately (desynchronized). This is done using a Capture Viewer, Plan Viewer and BIM Viewer in the BIM Compare Layout.

BIM Compare Layout

To view 3D digital twins and BIM files side by side:

  1. Click on Manage viewers  in the top Toolbar.
  2. Click on BIM Compare Layout.

Capture and Plan Viewer Navigation

The BIM Compare Layout is made up of three different viewers, each having their own set of controls: Capture Viewer, Plan Viewer, and BIM Viewer. To learn how to navigate and control the Capture Viewer and Plan Viewer, please read:

BIM Viewer Navigation

All BIM Viewer movement is synchronized with the Capture Viewer by default. 

(Note that you can Desync and then Resync to examine BIM objects outside of the current Capture Viewer pano.)

  • Fly Mode  - Navigate the BIM file using a first-person view. Available options are shown in the image below.

  • Model Structure  - Turn specific object model types on and off. This is useful for viewing certain areas that are blocked from view by walls and other objects.
  • Measure Distance  - When enabled, this allows you to measure distance, angles and calibrate from one point to another.
  • Properties  - Click on any object in the BIM model to see details like constraints, material type, cost, dimensions and more.
  • Transport  - Select an object, or more, to overlay onto panos or point clouds in the Capture Viewer and then click this button to Transport it over.
  • Reset View  -Return the view to the original one. This is only active when the Capture Viewer and BIM Viewer are desynchronized.
  • Unlock  - Click on this to open the BIM Viewer is a separate web browser window. Useful for displaying on a second monitor.

Overlaying BIM Objects in the Capture Viewer

SiteView has the ability to transport BIM objects into the Capture Viewer and overlay them on panos. This is useful for directly comparing BIM designs with as-built (real life) panos.

Overlay BIM Objects on Panos

To overlay BIM objects on panos:

    1. Use the Capture Viewer to navigate to the area with the BIM objects you'd like to transport over.

    2. (Optional) If more than one BIM Model exists, choose the one you need from the Model Control at the bottom of the BIM Viewer.

    3. Select a BIM object by left clicking on it. You can choose multiple objects at once by holding CTRL while clicking on each object.

    4. Right click on a selected object(s) and click Transport Selected

    5. The object(s) will display in the pano.

Filter BIM Object Groups with Model Structure

If you want to filter and transport specific groups of objects from a BIM file, the Model Structure control can help. For example, let's say you want to overlay specific rectangular objects onto the panos like the images below.

Here is the suggested procedure:

  1. Click on Sync  at the top right to desync the BIM file from the Capture Viewer. This makes it easier to view the objects you are interested in overlaying onto the panos.
  2. In the BIM Viewer, click on Model Structure  .
  3. Use SHIFT + Left Click to select a group, or several groups, of objects from the list. To make it easier to filter, click on the "eye" to change a group from visible  to invisible  as needed.
  4. Click on Transport  to overlay all of the objects onto the panos in the Capture Viewer at a single time.

Remove BIM Objects from Panos

To remove overlaid BIM objects from panos:

    1. In the Capture Viewer, right click on the BIM object to be removed.

    2. Hover over the name of the object, and then click on Delete.

Desync or Resync the Capture Viewer and BIM Viewer

You can desynchronize or resynchronize the Capture Viewer with the BIM Viewer by clicking on Sync view changes among 3D viewers .

Matt is the author of this solution article.

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