topic Re: UV texture mapping in Revit Architecture Forum

UV texture mapping

a.kangarakis — Wed, 09 Nov 2022 23:15:35 GMT

I'm using Revit with Unreal Engine 5. I want to do as little work as possible in Unreal so I'd like to try to customize as much as possible in Revit. Unfortunately, the textures of rounded elements in Revit cannot be controlled to change the UV direction. There is the possibility to rotate the material in Revit. However, it only rotates the image (JPG) but not the UV direction. Is there any solution to this?

The material changes its coordinates at each edge. Is there a solution to this or is it also a problem that Revit has with UV mapping? Many Thanks.

Re: UV texture mapping

barthbradley — Thu, 10 Nov 2022 02:52:31 GMT

Duplicate the Material and rotate the image of the duplicate.

Re: UV texture mapping

ToanDN — Thu, 10 Nov 2022 05:22:49 GMT

Unfortunately UV mapping control doesn't exist in Revit. If you want to wrap a texture continuously on a curved sweep, model the sweep path using a single spline, not arc segments.

Re: UV texture mapping

barthbradley — Thu, 10 Nov 2022 05:50:24 GMT

What about scaling with no tiling?

Re: UV texture mapping

a.kangarakis — Thu, 10 Nov 2022 07:55:59 GMT

Thank you for all the replies.

It's about a picture frame with a sweep profile. I'll send you a few pictures of it. The fillet texture (marked blue in the sweep_hatching.jpg) cannot be rotated by hatching. The material was duplicated and rotated 90 degrees in the Material Editor. One Material for horizontally and one for vertically frame. When I export the file I have 2 textures in Unreal. A JPG rotated 0 degrees and a JPG rotated 90 degrees. As long as I adjust the textures in Revit, it also looks correct in Unreal, except for the edges where the coordinates jump. Only when I later want to replace my material with an Unreal material you will notice that the UV mapping is not working. Means I need 2 unreal materials that are rotated too.

Re: UV texture mapping

barthbradley — Thu, 10 Nov 2022 15:58:41 GMT

Won't happen with a sweep. Vertical and horizontal members need to be separate components/materials. Or, you might (emphasis on "might") be able to get there by Painting the vertical and horizontal surfaces with two different Material Parameters. Are you familiar with this process?

Re: UV texture mapping

a.kangarakis — Thu, 10 Nov 2022 18:40:15 GMT

Hello and thank you for your reply. Sorry I forgot to mention it. My picture frame family already consists of 4 individual elements with sweeps. For the horizontal and vertical elements I assigned object styles with different materials. So far everything works in Revit. Unfortunately, the UV direction cannot be rotated for the curved sweep Elements.

Re: UV texture mapping

ToanDN — Thu, 10 Nov 2022 20:46:34 GMT

@a.kangarakis wrote:

Hello and thank you for your reply. Sorry I forgot to mention it. My picture frame family already consists of 4 individual elements with sweeps. For the horizontal and vertical elements I assigned object styles with different materials. So far everything works in Revit. Unfortunately, the UV direction cannot be rotated for the curved sweep Elements.

As I already said, you need a continuous spline instead of lines and arcs for the profile.

Re: UV texture mapping

barthbradley — Thu, 10 Nov 2022 19:01:19 GMT

....ARRGH!