Navisworks model

Exporting from Navisworks:

If your model appears to jitter in the HoloLens app please go see the section Placing reference points through Navisworks and the movement section afterwards.

First ensure your model has the RedCraterReferencePoints in it (see here), otherwise you can add them in through Navisworks and have applied the colors through Revit, then save and close your Revit project file.

In general colors applied to items and which show in the Shaded view (include screenshot) in Navisworks will show be shown in the BIM Holoview application. However, this does not apply to some imported items (such as imported FBX models) so there is no guarantee all colors will always display in BIM Holoview as they are shown in Navisworks

Importing into Navisworks:

1. Open Navisworks.
2. Click the N in the top left corner.
3. Click Open.
4. Click the Files of type dropdown and select Revit (*.rvt, *.rfa, *.rte).
5. Navigate to your Revit project file, select it and click Open.

Verify the model and colors look how you want them in 'Shaded Mode' (Under Viewpoint > Mode).

Placing reference points through Navisworks (If you already have the reference points, skip this step and go here).

1. Download the reference points
2. In Navisworks under the Home tab click Append
3. Navigate to the downloaded reference points family and open it. It will be called either RedCraterReferencePointNavisworksAB.nwd, RedCraterReferencePointNavisworksCD.nwd or RedCraterReferencePointNavisworksEF.nwd depending on which reference points you wish to use.
4. Under the Home tab, in the Select & Search section, click Selection Tree.

5. The Selection Tree will appear to the left, navigate to and select the desired RedCraterReferencePointNavisworks.nwd, it should be at the top of the heirarchy.
6. The reference points plane will now be selected, use the Transform tools under the Item Tools to move and rotate the reference points to your desired location. Note: The reference points are 2m apart.
7. If the reference points are far away from your model then move your model to the reference points rather than moving the reference points to your model.
   • This is because when the reference points get added to Navisworks their origin will be at 0,0,0.
   • Therefore if your model is too far from the origin, it will become corrupt and will have a jitter in the HoloLens making it very hard to view.
8. In the Selection Tree, expand the whole heirarchy of the RedCraterReferencePointNavisworks.nwd and select the last items called RedCraterReferencePointA and RedCraterReferencePointB (or C & D or E & F, depending on which ones you chose).
9. Under the Home tab in the Visibility section click Require.
10. Skip the Locking in reference points section.

If the reference points get imported far away from the model then follow these steps to move it closer.

• Using the transform values (recommended)
  1. Select the model from the Selection Tree heirarchy you wish the reference points to be on.
  2. Under the Item Tools tab in the Transform section click on Move and then Transform and a dropdown box will appear with some values.
  3. Note down the values for the Transform Center, all X, Y and Z. Values under 20 you shouldn't need to worry about.
  4. Select the model in the Selection Tree heirarchy and click on Transform.
  5. Enter those values you noted down earlier into the X, Y and Z and hit enter. The reference points should now be close enough to the model to use the move tool.
• Using the movement transform tool
  1. Select all top levels in the Selection Tree heirarchy.
  2. Using the ViewCube, click on the Top. It will include all of the selected parts into the view.
     • If the models line up vertically then click on the Front or Right part of the ViewCube.
  3. Ensure that Move is selected under the Transform section of the Item Tools tab and select everything except the RedCraterReferencePointNavisworks. Now move them as close to the reference points as you can.
  4. Go back to step 1 and repeat until the reference points are close enough to move normally.

Coloring

If you are using different colors on the same material, only 1 color will be applied when processing has been completed. As a result some items may appear a different color than what they appear in Navisworks. We suggest you use a consistent color across all items with the same material in Navisworks through the following procedure:

1. In Navisworks, navigate through your model and select the item which has multiple different colors.
2. Under the Home tab in the Select & Search section click Select Same.
3. A dropdown will appear, click Select Same Material.
4. Verify that all the items are selected by checking they are highlighted blue.

5. Under the Item Tools tab in the Appearance section select the desired color in the color dropdown.

Locking in reference points:

1. Navigate through your model to find the RedCraterReferencePoints.
2. Click on one of the reference points.
3. Under the Item Tools tab, click Require.
4. Repeat for the other reference point

Exporting:

When exporting from Navisworks make sure that the Convert Units to area is the correct units for your model. If your model was built using feet then set this to feet. If you are unsure then leave this at its default value.

1. Click the N in the top left corner.
2. Click Export.
3. Click FBX.
4. We recommend these options: (C=Checked,U=Unchecked,O=Optional)
1. Include:
1. Textures - C
2. Lights - O
3. Cameras - O
2. Polygon Limiting*:
1. Enabled - U
3. Advanced options:
1. Convert Units to: Correct units for your model (Will default to units used for your model)
2. FBX File Format: Binary
3. FBX File Version: FBX201800
4. Autodesk Material Version: 2018
4. Texture:
1. Embed - C
5. Click OK to export.

*We strongly recommend not using polygon limiting. If you use this please be aware that the FBX model may be less than 120MB but the Hololens may still run out of memory due to the polygon limiting not actually removing objects but just reducing their geometry. Instead we recommend hiding layers or to use sectioning to reduce the size. Also FBX models with polygon reduction take a lot longer to process and can take up to 6 hours to complete.

Watch this video for an example of placing the reference points into Navisworks