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    Rendering materials on a family modelled in AutoCAD

    Hi all, here's my second problem of today:

    I've been modelling components in AutoCAD (I know that makes me some kind of sinner but it is soo much quicker) I then imported my model into a revit family (see attached), I made sure I had a useful layer so that I could go into object properties and assign a material to it. The problem is when I render it in Revit It doesn't render the material properly (also see attached). It almost looks like there are 2 objects overlaying each other, but I have checked both the raw AutoCAD model and the family and the project and there are no Duplicates.

    Can somebody please help me, as i need to make lots of objects and furniture for the room, and don't want to make lots of families that won't render properly
    Attached Files
    please visit my architectural site

    #2
    You should be able to go to Imported Categories and select the material of the Cad object, and change it to what material you like, and have it render properly.
    The "double object" problem could actually be an anti-alias setting that needs to be adjusted in render settings--not sure about that? Also go to Object Styles and make sure you change materials there. The materials in the Family and in the Project must be identical, or it won't render properly. Best practice is to set up a Material Parameter in the Family, so that when you load it into your Project you can select/change the materials in the family from inside the Project.

    Perhaps you could post your family which contains the cad objects and we can take a look.

    That said--your impression that "it's so much faster to model in AutoCad" is really not accurate. It may be that right now you are faster modeling in cad--but spend some more time learning how to model in Revit and you will then be miles ahead, plus you won't be cluttering up your Revit models with lots of imported Cad--which creates a huge performance problem in Revit. It seems you could just model in AutoCad and render in cad as well--since it now has Mental Ray rendering engine which is the same as Revit? It kind of defeats the purpose of Revit (BIM) to model in another app, import it and then only use it for rendering.

    No offense meant here--but you asked a question on a "super-Revit" forum, so you can expect the replies to be "super-revit" answers!
    Cliff B. Collins
    Registered Architect
    The Lamar Johnson Collaborative Architects, St. Louis, MO
    Autodesk Expert Elite

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      #3
      Hi the family is already attached to the thread and I've already assigned the material from cad to the layer in Revit, the material in the model has come through from the family so they should be identicle anyway.

      My client has stipulated that he wants the final piece in revit so that they can build a proposed from it.

      I'm having a number of issues modelling in revit as all of the stuff i'm doing is from existing surveys and 2D drawings done in autoCAD, I find Revit very cumbersome and slow with having to constantly change views rather than just splitting the screen. As you say eventually I may get used to it but as per usual clients lay down their demands wih regards to time, I know I can model extremely fast in AutoCAD where as in Revit I seem to be regularly :banghead:. maybe i'm missing a simple view command somewhere?

      I'm also having trouble importing ellipticle solids, and manipulating linked cad files (but I'm holding them back for other posts lol)
      Last edited by Jimidy; July 13, 2011, 02:01 PM.
      please visit my architectural site

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        #4
        Make shure that the color of the elements in the DWG is By Layer, that should do the trick.... but I must say, learn Revit family creation. For splitscreen in Revit use Window Tile (Shortcut WT) it will split the screen in those views that you have currentley open.
        - Peter -
        www.revitogbim.blogspot.com

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          #5
          The colour is already by layer in the dwg

          Thanks for the WT thing, it does kind of do the trick but **** poor in comparrison to what you get in Max / Autocad lol, I'd like to be able to have multiple windows open with split sceens not multiple windows in my screen ;(

          I'm about to post my Ellipticle issue if any of you want a challenge lol
          please visit my architectural site

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            #6
            kk i've just tried changing the layers material to different ones and still get the grey look instead of the desired wood effect. the colour in the shaded model changes but the render still only shows as a fuzzy grey. has anyone had a play with my attached model and achieved a result?
            please visit my architectural site

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              #7
              Okay, before I go ballistic on you let me just say this:

              It's not personal. I'm not trying to offend you, or any one els that believes this workmethod creates more than absolute garbage... But I do have some strong opinions which I'm about to vent. So duck please...

              Originally posted by Jimidy View Post
              Hi all, here's my second problem of today:

              I've been modelling components in AutoCAD (I know that makes me some kind of sinner but it is soo much quicker) I then imported my model into a revit family (see attached), I made sure I had a useful layer so that I could go into object properties and assign a material to it. The problem is when I render it in Revit It doesn't render the material properly (also see attached). It almost looks like there are 2 objects overlaying each other, but I have checked both the raw AutoCAD model and the family and the project and there are no Duplicates.

              Can somebody please help me, as i need to make lots of objects and furniture for the room, and don't want to make lots of families that won't render properly
              I haven't even bothered looking at this file. I couldn't help you since I don't do this kind of selfdestructive stuff. But I do want to comment on some statements:

              IT IS NOT FASTER!!!! NOT NOW, NOT EVER.
              So you can model it faster? Good for you. Worthless in comparison. This is NOT Autocad. Speed in Revit is NOT measured in the time you need to model something. You will ALWAYS need more time to model something in Revit. Why? Cause you're bringing intelligence. Intelligence needs time.

              Did you take into account the time needed to import it into a family? Or the time lost with finding why it won't render for that matter? Did you take into account all the other instances you will need to model separately since this is just a static block? Did you take into account all the other projects you're going to do and need this stuff to be just a tad different? Did you take into account the time you'll need when your client wants slightly different panels?

              Again: IT IS NOT FASTER!!! Not if you look at the entire design process of this project, not by a long shot if you take into account the uncountable amount of projects you're going to do in the future.

              Originally posted by Jimidy View Post
              My client has stipulated that he wants the final piece in revit so that they can build a proposed from it.

              I'm also having trouble importing ellipticle solids, and manipulating linked cad files (but I'm holding them back for other posts lol)
              Are you serious??? Am I the only one who sees a MAJOR problem rising here???
              Your client STIPULATES he needs the design in Revit to reuse it and you're even thinking of feeding him a project filled with this garbage? It is completely, totally and utterly useless for anything else then pretty pictures. (and by the looks of it: that's not working out very well either). How is your client going to use this? It's not scheduable, it doesn't have any parameters. Length, width, thickness, material, amount and size of the panels: it's not there! Your client is getting an empty file.
              If it were me you were feeding this I would give you a weeks notice. If you can't give anything proper by then, I'd sue your ass for malpractise.

              About the manipulating imported dwg's: forget it. Not possible. Not desirable either. That's why there's a family editor in Revit. Deal with it...


              Now I'm done venting, please note that I was not trying to insult you or dignify your efforts in any way. It's my belief as a consultant for some years that transferring to Revit can only be done in one way: the hard way. Trust me, there's no easy way.
              And the best way to realise that if it's said out loud. So sorry if I in any way offended you, but I do think that you're on a path to disaster. Not only will you never develop your skills without trying, but you're about to let a client pay good money for something absolutely worthless. I don't know how that rubs off in the UK but over here we would say that the s**t is about to hit the fan...
              Martijn de Riet
              Professional Revit Consultant | Revit API Developer
              MdR Advies
              Planta1 Revit Online Consulting

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                #8
                Okay mdradvies let me explain what i'm trying to do a little better, basically this room is part of a listed building, the whole building will be demolished and rebuilt somewhere else. My client hasn't asked for every component to be scheduled as they are all existing and the scan data they gave me has many gaps in it anyway so alot is guessed educationaly. They have asked for a revit model so that they cn build a proposed building around the existing so realistically all they need is the geometry of the room nothing more.

                Now it would be great if their budget alowed for me to completely reeducate myself in modelling in Revit where infact you have admitted it is slower (only quicker if you know exactly what you are doing and can handle the many times the computer will say no) Also the original survey data is in AutoCAD where if you read one of my other posts you will see that i've been having issues with the imported survey data.

                The fact is I have been dealt a hand and can only play this one: My modelling skills are currently only in AutoCAD, my client requires a Revit model, the survey data is in AutoCAD, they have a limited budget and can't afford the time to let me learn modelling in REVIT in-fact they have just shaved a week off the deadline, making time even tighter.

                I don't take offence to your commets as I believe they are correct just slightly uneducated to my situation. If my client decide to sue then I will defend my self on the basis of that they didn't specify in their breif what they actually wanted and that the raw data was provided in AutoCAD. What more can I do?
                please visit my architectural site

                Comment


                  #9
                  Originally posted by Jimidy View Post
                  Okay mdradvies let me explain what i'm trying to do a little better, basically this room is part of a listed building, the whole building will be demolished and rebuilt somewhere else. My client hasn't asked for every component to be scheduled as they are all existing and the scan data they gave me has many gaps in it anyway so alot is guessed educationaly. They have asked for a revit model so that they cn build a proposed building around the existing so realistically all they need is the geometry of the room nothing more.
                  Ok, but why model all this stuff? Besides that, I stand my ground: if I were your client we would have a serious problem when I received a rvt-project filled with imported dwg's. For instance: what if he's thinking to re-use some of your families in a slightly different way? Not possible. What if he's thinking about creating a demolition plan from your model and extract data from it: not possible. And so forth...

                  Now it would be great if their budget alowed for me to completely reeducate myself in modelling in Revit where infact you have admitted it is slower (only quicker if you know exactly what you are doing and can handle the many times the computer will say no) Also the original survey data is in AutoCAD where if you read one of my other posts you will see that i've been having issues with the imported survey data.
                  Well, do they know you're not skilled? And if not: would they have hired you if they did know? If either of the questions is answered with a yes, you have a point. But I guess it would be a no-no. And that makes it entirely your problem.
                  Besides that: reread my post. I specifically said that, in view of the COMPLETE process, it is NOT faster. You're facing a whole lot of problems which you could have avoided taking the time educating yourself.

                  The fact is I have been dealt a hand and can only play this one: My modelling skills are currently only in AutoCAD, my client requires a Revit model, the survey data is in AutoCAD, they have a limited budget and can't afford the time to let me learn modelling in REVIT in-fact they have just shaved a week off the deadline, making time even tighter.

                  I don't take offence to your commets as I believe they are correct just slightly uneducated to my situation. If my client decide to sue then I will defend my self on the basis of that they didn't specify in their breif what they actually wanted and that the raw data was provided in AutoCAD. What more can I do?
                  You mean besides turning down a project demanding skills you don't have?

                  Seriously: specifying the use of Revit implies the need of a modeller skilled in Revit. You're clearly not... so why did you take the job? Sorry, but you knew this in advance... Can't hide behind the clients, it's your responsibility to complete the task in an acceptable manner.
                  Martijn de Riet
                  Professional Revit Consultant | Revit API Developer
                  MdR Advies
                  Planta1 Revit Online Consulting

                  Comment


                    #10
                    Originally posted by mdradvies View Post
                    Seriously: specifying the use of Revit implies the need of a modeller skilled in Revit. You're clearly not... so why did you take the job? Sorry, but you knew this in advance... Can't hide behind the clients, it's your responsibility to complete the task in an acceptable manner.
                    In honesty i didn't tell them I wasn't skilled so Basically I gave them 2 quotes one involving modelling in families using Revit (at the time I had basic knowledge and included time to educate myself) I allowed an extra 3 weeks to have done the project solely using REVIT. The other quote was to model intricate elements in AutoCAD and import to Revit, I assume their eyes lit up when they could get the job done for 3 weeks less fees lol

                    I'm pretty sure come the end of my project, they may realise what they have and throw me some extra fees to make them all entirely revit families, so look out for a post titled "how do you trace a 3D imported solid from AutoCAD to produce a Revit Family"
                    Last edited by Jimidy; July 14, 2011, 12:33 PM.
                    please visit my architectural site

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