Distorted image files in DWG Exports from Revit

[andybrack]

Hi all. I ran into a problem I haven't experienced before.  Normally when exporting to .DWG from Revit, any raster image files linked in the Revit file should be exported along with the .DWG file.  For one project at my firm, the image files are processing, but when you open the resultant .DWG file, the image links are distorted.  See attached images.

The processed .png files are fine and if you open them in Photoshop or the Windows Image Viewer they look perfectly normal. Has anybody experienced this issue?  Over the years, I've had .jpg logos on titleblocks and other raster images in my files such as UL assemblies and haven't had this problem.

[syman2000]

Can you upload the image so we can test out if we can replicate the issue from our end.

[andybrack]

Sorry for the slow reply.   Yes I can.  I have to sanitize some of the information, but I will post in a bit.

[andybrack]

@syman2000 Exported CAD file and the image file is attached. For testing, I simplified it by only including one of the images and stripping out the other views. Other images we have linked do the same thing where they distort. Some images distort more than others, but always skewed such that the top of the image is skewed to the right.

It is also worth noting that in the exported CAD file, if you run select the image and run the LIST command, each image has a value for "Extrusion direction relative to UCS" so it looks like Revit is doing something weird to the images during the export. For reference I checked DWG exports from several other Revit files that exported as expected and the image files did not have this value.  I tried to figure out if there was a way to flatten the content, but that didn't work and made the linked image disappear.

[syman2000 · Accepted solution]

The image is placed in weird UCS face. Notice the rotation is set very weird angle

If I change the rotation to 0, it will go back to normal.

[andybrack]

Thanks so much for finding that.  Long term I want to see if I can isolate why Revit is exporting this way.   I had a suspicion that the rotation may be due to either Shared Coordinates, drawing on a Work Plane, or some other mechanism in the Revit file that would place the image in a location that is not perpendicular to the view.  We plan on repeatedly exporting files so this allows us to fix the CAD files but I would love to fix it inside Revit to save us the time after exporting.  Again thanks for all your help!!

Andy Brack