Wednesday, 8 June 2011

Wookiees and Hamsters

Ok so go with me on this one...

I was asked in a training session the other day how to control the position of jpeg images imported into elevation views within Revit. Straight away I was on the internet trying to find some sample images to use as a demonstration. The samples I found made the group laugh so I thought I would use the same images when blogging about it.

Images imported into Revit can be brought in using the Decal or Image icons on the insert Tab. There are distinct deferences between the two.

Decal: Allows an image to be placed onto a 3D planar surface within the model but only displays the image if the view is rendered.

Image: Allows an image to be brought into a 2D view and displays in all views except for 3D and rendered views.

The screen shot below shows a series of walls all staggered in depth.  I've imported an image of what appears to be a giant Hamster and by default, when placing the image it is set to background. The Hamster peeps over the wall!

It is possible to change the position of the image but the available options are quite limited.
Select the image, in the instance properties you will find an option to adjust the draw layer. You can change it to foreground.

The Hamster jumps in front of the walls and is displayed in the foreground.

The problem with the Hamster being in the foreground is that the image has a white background and masks out the walls (so it doesn't look normal, well... as normal as a giant Hamster on a wall could be).

If you want images to display in the foreground, the solution is to use images with transparent backgrounds. The .png file type supports transparent image backgrounds and can be loaded into Revit.

Ok so now I need a .png image with a transparent background so I can demonstrate how the images look. Back to the Internet again! The first thing I found was a clan of Wookiees. Good enough!

Here you can see the Wookiees have been loaded into the scene and set to foreground. Notice there is no background and they blend in naturally with the wall (honestly).

So there you have it, Wookies and Hamsters in a Revit blog. I'm pretty sure this is a first.

Obviously if you apply these techniques to your building elevations you will realise that you can now load in people, trees, cars etc using the Wookiee technique, and for a Sky or background image use the Hamster technique. All without the need to export your images to Photoshop for final editing.

1 comment:

Spencer said...

Great post thanks. Amusing and very useful.

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