Archive | March, 2012

The Revit!: High Definition Revit Renderings (HDR Tone and Merge)

21 Mar



The left image is exported directly from Revit.  The right image is exported from Revit and then enhanced using Photoshop.  The tool is called HDR Toning and HDR Merge.  HDR Toning only exists in Photoshop CS5 while HDR Merge exists in CS3, CS4, and CS5.  I said “High Definition” in the post title but it really stands for High Dynamic Range.  This is a fantastic way to add a lot of dimension to Revit Renderings.

The Revit!: High Definition Revit Renderings (HDR Tone and Merge).



21 Mar


Mental Ray renders are great, but sometimes you want something softer, more impressionistic.  There are many ways of achieving this, but ideally I want to stay as close to the Revit workflow as I can. So I aim to limit any image manipulation outside of Revit to what I can achieve in 10-15 minutes.
You can see some examples on my “Revit work at GAJ” page

I usually start be combining a shaded or hidden line image with a render.  Make sure they are both the same resolution, then it’s just a simple ctrl-A, ctrl-C, ctrl-V to get one layered on top of the other.
Next step is to duplicate the background, apply a watercolour filter and fade this new layer to say 40% transparency

Finally, duplicate the hidden-line layer, and set the mode to overlay.  Add a layer mask, and make the centre of the mask partly transparent by applying black with a big soft brush set to say 10% opacity. You are looking to create a mask that fades from dark grey in the middle to white at the edges, basically a big soft oval vignette.  This creates a subtle fading towards the edges.

With practice you can create very nice images in less than 10 minutes.  For best results you need to fine tune the transparencies and final image contrast levels to suit that particular image.

Some more examples below, including a “squiggled” DWG export overlaid on a live Revit view.

 Combining rendered views with hand sketching can be very effective.  This one was done to communicate our comments to a specialist rendering service employed by the client.

Have also experimented with Autodesk Impression.  It’s a free download, but you have to do a DWG export first, so the workflow gets a bit too elaborate for regular use.

One last thought. Wouldn’t it be great if this kind of image could be produced internally in Revit.  Some kind of plug-in maybe that allows you to combine a hidden line view with a render and set the transparency. I suspect it’s beyond the capabilities of the API at the moment, but it would be very nice if you didn’t have to leave Revit, create a jpeg, delete the old one from the sheet then position the new one carefully in the same place

BIM Manager

19 Mar

Monday, December 12, 2011

Navisworks Keyboard Shortcuts for blazing fast clash reviews using Autohotkey. Note that the Num Lock must be turned off for this to work!

Navisworks Keyboard Shortcuts Included in the zip file is the executable, the autohotkey source code if you want to customize this to your liking and a pdf that shows what the shortcuts are.

Most of the shortcuts are self explanatory but they do some very handy things.

0 – sets the clash to Reviewed and brings up the assign to dialog assign is a great tool to organize your clash reports and add comments for sending out to subs

1 – sets the clash to Reviewed and then automatically moves on to the next clash my clash reports only contain clashes set to Reviewed, in my world Active means it still needs to be reviewed

2 – moves to the next clash in the list without changing the status

3 – set the clash to Approved and moves to the next clash

4 – selects the clashing object in the left side of clash detective and zooms to that object

5 – full screen if you have 2 monitors I recommend putting Navisworks on the second monitor, this way when you use full screen it puts the full screen view on the left monitor and leaves all you tool palletes open on the right monitor

6 – selects the clashing object in the right side of clash detective and zooms to that object

7 – selects the clashing object in the left side of clash detective and turns on the select filter the select filter is a great way to quickly slim down the number of clashes, if you dont use it then go learn it now!

8 – moves to the previous clash without changing the status

9 – selects the clashing object in the right side of clash detective and turns on the select filter.

. – focus on the overall clash this is great if you get lost in your model

/ – Sets navigation to classic walk mode – sets navigation to classic orbit

– – sets the clash view to Dim other

+ – sets the clash view to Hide Other

If you use other programs while using Navisworks you can simply turn Num Lock back on and this shouldnt affect any other programs.I hope this proves to be useful for everyone and I hope it inspires others to share the tools they have developed. I believe sharing is important to move us all forward as a group. Please provide feedback and any other ideas you may have to improve the

via BIM Manager.