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Roof based light fixture

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    Roof based light fixture

    How would I go about creating this? None of the lighing family templates are roof based.

    Maybe I'm thinking about this wrong. I need a canopy light, similar to those used at gas station canopies. Should I just create it as a work plane based family? Better yet, if anyone has one I can pilfer, I'll take it! lol
    Dan

    #2
    Work plane based would be the way to go with this one.

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      #3
      The easy way, create a generic roof based family, and change the category to lightning fixture.

      The right way, create the lightning fixture as non hosted, and then nest it into a (empty) hosted family. - Maybe consider facebased instead of roofbased though
      Klaus Munkholm
      "Do. Or do not. There is no try."

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        #4
        Originally posted by Munkholm View Post
        The easy way, create a generic roof based family, and change the category to lightning fixture.

        The right way, create the lightning fixture as non hosted, and then nest it into a (empty) hosted family. - Maybe consider facebased instead of roofbased though
        Ahhh, interesting. I never thought of creating a non hosted family, then nesting that into a hosted family. Would it still be a lighting category for tagging purposes? I guess I can change the category in the family though. I'll try that.
        Dan

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          #5
          I would go with Munkholms suggestion. Simply because it offers you more control / constraint in the placement of the fixture. In my projects it all too often happens that I have at least one (named) refplane aligned with the roof but with an offset. A workplaced family would make it possible to insert on the wrong refplane.
          Martijn de Riet
          Professional Revit Consultant | Revit API Developer
          MdR Advies
          Planta1 Revit Online Consulting

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            #6
            Well, I did what you said. Created a non hosted light fixture. Then hosted it into a face based generic model. Only problem so far is the fixture is coming in upside down, and it won't let me rotate it. The light is facing up into the roof, instead of down.

            Any ideas?

            Okay, I see why it's doing that because of the face base family. It needs to be sitting on the face. How do I fix it?
            Last edited by dzatto; January 19, 2011, 08:57 PM.
            Dan

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              #7
              Could you post the fixture? Preferrably inserted in your project so we can see the problem. I'm guessing it's the orientation of the fixture in your family, try mirroring it or give it an offset. Wouldn't know for sure until I see the pesky little bugger.
              Martijn de Riet
              Professional Revit Consultant | Revit API Developer
              MdR Advies
              Planta1 Revit Online Consulting

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                #8
                Here is the family. I tried mirroring it, and it did work, but messed up the geometry. The project is too large. I'm trying to insert it on the face of a roof.
                Attached Files
                Dan

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                  #9
                  I think you built the family on the wrong plane, you should have started on the plane that says light fixture elevation, that's why its embedded in the host
                  Also try unchecking always vertical and it should adapt to the face that hosts it
                  Sorry I don't have more time to check the file more thoroughly
                  Last edited by JCM; January 19, 2011, 11:12 PM.
                  Juan Carlos Moreno
                  Store Designer & Merchandising Manager
                  Sisley Cosmetics

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                    #10
                    JCM hit some of the points about what's going on. Too complicated to go step by step, but just look at changes I made to family (and nested family).

                    BTW, I've done lights just about every which way possible, and my preferred method is just using workplane based when I can, unless there's a need for face-based, such as a "can" downlight (i.e. recessed into ceiling)... but I go back and forth. I was doing all my lighting face-based for a while, but the limitations of "symbols" in face-based families for wall sconces has proved too much to overcome. I do avoid host-based families such as ceilings, walls, floors, etc. (and if I do use them, I use the technique others have pointed out - always nest a workplane based family into the host-based family). But there's no right or wrong - experiment and see what works best for you.
                    Attached Files

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