What is the problem ?

[vlado]

Well, if you can get me a scene file with this mesh to vlado@chaosgroup.com I will be able to tell you more about the issue.

Best regards,
Vlado

[teabag]

have u tried remerging into new scene...this looks exactly as i had it!!!!
merge the model into a new scene without any dwg imports

[DaForce]

No need to merge, just change the rendered back to scanline then back to vray and resetup.

Seems fine after that.
Im sure there was a funny setting somewhere but for the life of me I couldnt find it... plus its bed time

[dominiquelaksmana]

so all along it was the dwg imports? @#!%$@%!$!

[Sawyer]

so all along it was the dwg imports? @#!%$@%!$!

I still have not found a better workflow than 2d cad lines modeled in max. ADT and revit keep giving me headaches.

[dominiquelaksmana]

well that is precisely how i model things in max.
does this count as well? because the 2d lines are imported to max as well.

[gilpo]

100% of our work is done in Revit and imported in as a DWG. We have never had this problem. The only thing that I can think of that could cause a problem is the fact we work in feet and your file was in inches. Also, when you do your export from Revit, make sure you exporting as ACIS Solids as opposed to polymesh objects.

[bernhard]

hmm..

Okay hold on guys, I make some more tests.

@DaForce:
Hmm, all other objects are fine in the scene file. If you just create a new box and assign the same material on it - you can see that everything is okay.

I 've also tested to switch to scanline render, and after this I've loaded the same settings (saved before...) and I do have the same issues. spots are everywhere....


@vlado:
I've uploaded the scene file please see the link above....
if you can't download - just let me know and I will send you an email.

@gilpo:
Hmm, sounds interesting. I was talking to our revit experts, and all the objecs were exported as polymesh...

could you explain me the progress - is there any special thing we have to recognize from the revit export and maybe - yes, we missed it ?


Okay, now I start making more tests... I think that I am really not alone with this issue....

bernhard

[gilpo]

bernhard,

I took a bunch of screenshots showing the settings we use for getting from Revit to Max. Instead of cluttering the forum with a bunch of in-line images, I put them all in this directory on our webserver:

http://www.westlundconcepts.com/revit/

They should be self-explanatory, but if you need clarification, let me know. This is Max 9, BTW.

Good luck!

[bernhard]

thank you...

Thnak yu, I really appreciate that much.
I've made a first test (before you sent me your settings, and it wasn't sucessfull).

hmm, maybe your settings will help us and get rid of this problem.
It's just one way we can try, but maybe it has nothign to do with the export.

We will see...
thx a lot,
bernhard

[bernhard]

hmm..

Okay, now I could test it your way, and well, we couldn't fix it.
I decided now to upload you our .dwg file - maybe there was something wrong in the modelling process of revit ?

Here is the scene file:
Would be really interesting, if you can render in gi without having this probems:

http://www.bernhardrieder.com/ask/wall-ACIS.dwg

thx a lot,
bernhard

[gilpo]

It imported and rendered fine. I uploaded my max file along with screen shots of all relevant settings to the folder I gave you earlier. It also has my rendering in it as well.

I'm getting ready to leave the office, but I will be in tomorrow afternoon. If you still need help, I can help you more then.

Good luck.

[bernhard]

strange....

Hello gilpo and thank you very much for all your efforts.

It's really strnage - I'ev downloaded your scene file - used your render settings and after sucesfull render I've switched to my render settings.

I've loaded my preset - and the problem was fixed - or better - the spots were gone also with usign my render settings.

I am really not sure what makes this issue in my other scene file.
Maybe it's really the import / export stuff.

But i've created in Revit the same template you showed me.

I could see that you rescale everything - do you have any special purpose for that ?

Hmm, well.... I need more time to think about everything and to check the files... I couldn't find the point for difference.....

thx for every little hint,
bernhard

[gilpo]

Something I thought of earlier, is that maybe there's something screwy with your max install. If you still can't figure it out, you might try dumping it and re-installing everything.

As far as the rescaling goes, we've always done everything in Max in feet. Revit and AutoCAD both default to inches. As a result, we've just always rescaled on import. Has never caused any problems. We could reset things so that we work in feet in Revit and AutoCAD, but we get a lot of files from clients in inches so it's better for us to stay that way on the CAD side of things and convert when coming into Max.

We're all self-taught here, so some of the things we do are done a certain way because that's what we learned from somewhere along the way, right or wrong. But, as they say, if it ain't broke, don't fix it.

Let me know if you need anymore help.

[bernhard]

yes

I really appreciate your help. Well... today I've spent this scene file more attention - took a closer look - tried different renderings - etc.

But I really couldn't find the reason for the difference.
It's really strange.

Of course every help is welcome - maybe someone can find the difference between the scene files, or what happend during the import/export progress.

@gilpo:
Have you ever tried using my uploaded scene file ?
Deleting everything in it, but leave the render settings, and reimport with your method the .dwg file again ?

Did my original scene file worked on your computer ?
Or did you get the same issue - the spots on the wall ?

I think if it will work on your computer, well, then there must be somethign different in the vray render.

We use Vray 1.5RC3...

hmmm, so, thx for every little help,
bernhard