A Proxy Scene Problem

[mad_max5]

Hi Guys，

About Proxy Scene in Revit，I have some questions: I created a proxy scene in vray for skechup and I want use it in Revit by Appearance Manager. After I set up the proxy scene, the rendered screen shows that something is not in the correct position and Angle. For example, I tested a bed model and found that the rendered bed was rotated by an Angle. What is the reason?The bed model I placed in Skechup is at the origin and has no rotation Angle.

[Ana Lyubenova]

I'll need to check this but my first guess is that coordinate systems of both SketchUp and Revit differ in direction. In such cases, use rotation settings in Appearance Manager.

[mad_max5]

Hi @Ana Lyubenova,
Regarding the problem I described above, are there any test results? I have found several other Skethup models for testing, and they all have the same problem. The common feature of the problem is that the rendering results of the proxy scene exported from SU are wrong in proportion and wrong in position in Revit Vray. For the same model, I have tested with 3Dmax and found that there is no such problem. The 3DMax VRay exported proxy scenes render perfectly in Revit VRay. So is this a SketchUp VRay Bug?

[Ana Lyubenova]

Hi mad_max5 ,

Can you send me some of those models at ana.lyubenova@chaosgroup.com?

Thanks,
Ana

[mad_max5]

Hi Ana @Ana Lyubenova,

The model file has been sent to your email. Please check. If you have any conclusion, please feel free to contact me.Thanks a lot.

[Ana Lyubenova]

Hello mad_max5 ,

I'm posting my response here, as it might be useful for other users too.

1. The proxy mesh you sent was exported with origin placed at the corner of the bounding box. This is why when rendered in Revit, it appears shifted. Next time you export a proxy file from SketchUp, please, make sure the origin is set correctly. Here is a video demonstrating how to set it: https://drive.google.com/file/d/1hPJ...ew?usp=sharing Attached are also the results in Vision before and after the origin adjustments. The poles indicate the origins of the Revit families that were replaced.
2. I can confirm that there is a bug in a specific proxy scene case. It looks like it matches the issue you experienced. Proxy scenes appear incorrectly positioned in cases when they are used as a replacements of in-place families. We'll do our best to fix the issue. Until then, the workaround is to use loadable families instead of in-place ones.

Let me know if I can help you with anything else.

Best,
Ana

[mad_max5]

Hi [email]Ana@Ana Lyubenova,

Thank you for your reply. I think I understand what you said about the origin. Proxy vrscene use the origin of components, not the origin of projects. This is different from 3DMAX. Resetting the origin of components can solve the origin problem of proxy vrscene. However, I still don't understand the scale of proxy vrscene. I set the scale of units in SketchUp to mm, and the scale in Revit to mm. But why does the scale of proxy vrscene generated in SketchUp become decimeter when they are put into Revit?

[Blizard]

Hello,

Thank you Ana for the solution of the origin, it's really helpfull
I've got the same observation about scale but from revit to sketchup with a vrscene, A wall of 10m high is 0.83m high. The unit of sketchup and revit are both in m.
+

[alessandro_campanini]

hello to everyone
i had the same problem in Revit and 3ds Max: I've made a Vray proxy in 3ds max as usual I did, but when I tried to import mesh proxy in Revit something went wrong with the scale; look 3 times bigger. If I make a Vray scene as a proxy everything is fine (in Vray scene I can't change materials). Any solutions?
Thanls

[zhanet.georgieva]

Hello alessandro_campanini, regarding the scaling issue, please check this article What is Revit's Internal Unit System?