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Thread: Make S Ride on The Rails

  1. #1
    JBZ
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    Make S Ride on The Rails

    Junior Member? How about horrible rating system!!! Oh well... We'll post here regardless of that mindless rating system...

    Modeling complex (and not complex) geometry... Expanding a new(er) world...???

    I must credit Marcello Sgambelluri for inspiring this. But it has opened me up to an entirely new way to model most everything and perhaps it will help you too!!!

    Bottom Line:
    Use Circles & Points from the Generic Adaptive Family... The following are the links to the original descriptive posts on the methods, where it's explained how to make length, width & angles with NO DIMENSIONS!!! Thus more stable & flexible families... (see below for the how-to portion (w/editorializations included).

    Part 1; The back story:
    Los Angeles Revit Users Group Blog: Perception, Breakthrough, Success & Help The LARUG Part

    Part 2; The How-To:
    Fear and Loathing In a CAD vs. BIM World: Perception, Breakthrough, Success & Help
    On To The Help!!! More Transformation for all.
    One of the questions was how to correctly model a twisting element (see image left).

    Marcello Sgambelluri & I took this one on. I modeled it the (now) olden way, as a generic component. I got the majority of success, where the model rotated from 1° to 76°. good since it only needs twist to 90°. but that is now a dead way to model...what I mean is, angular dimensions for rotation present inherent limitations... The other reasons for a new way of modeling is due to a breakthrough that Marcello had, that should/has inspired us all... Even people who think of themselves as Revit Heavyweights!!!

    The breakthrough came due to this simple modeling exercise, so get it? Marcello was open enough to let himself grow, even though he is already an amazing modeler It happened while he was driving into work (on his long commute) where he usually builds the pieces he is thinking about in his mind first...He knows to never stop growing & pushing himself... If that isn't using a good plan I don't know what is... PLAN FOR SUCCESS!!!

    It's funny, we were talking about how that seems so obvious to us but (unfortunately) most people are too lazy (or whatever) for continuously learning & growth... it's just too much work for some... More work for 'us' I guess...

    The breakthrough: Circles.


    "Let things ride on the rails"...

    FYI: I rebuilt this based on the concepts that Marcello spoke of, so if I can do it...I can do it... :-) No...You can also!!!


    A circle immediately gives a center & width, etc. and a nice stable place for points to host onto, no need for EQ constraints!!!

    The point in the center (1) is given an offset (2 & 3) that will dictate Length -no dimension needed!!!

    If the main REF PLANES are "0" then this "offset" will be the distance away from there, naturally...

    The points on the circle or 'rail' are told to be Angles & given Parameters of Twist Angle (name inconsequential) & the one that is opposite it given Twist Angle opposite (I used 1 & 2 so both sides of this could twist if desired)...


    Getting this so far???


    The 'Twist Angle opposite' parameters need a bit of a formula: See image left...


    The "-180°" makes them planar to one-another... Thus no EQ constraint!!! More Control, More Stability; Less Work!!!

    We get the Reference Line between the points by selecting the 2 points & clicking the Spline Between Points tool and Voilà a line.

    Remember to go to it's properties to turn it into a REF Line...



    Repeat this process for the other ends' circle & points (no need for the "offset" point, as this RAIL wants to stay in it's planar location...

    Half Width was added to each rail, to dictate the width, as we want width to be twice the circle's radius.


    Simple right...

    well it's simple once you are open to it, but even many seasoned pro's never thought of this... but I bet "we"...uhhh...I mean "they" will take credit for finding it :-)

    ...there may be others but Marcello was surely the first person I know of personally who stumbled onto this... Always pushing, always growing!!! Not even ADSK people knew this outright.


    OK where were we... Oh yeah the twisting object itself...

    Select the 2 REF Lines (that are built onto those points on the rails) & click "Create Form" and you have another Voilà moment...

    Associate Material to a new Material parameter, so you can change it from the project & you should be good... If you flexed each step of the way and were successful that is!!! If not...Try again!!!


    Well I think that's enough for now...Be Great!!!
    Attached Thumbnails Attached Thumbnails Make S Ride on The Rails-10-20-2011-2-59-12-pm.png  
    Last edited by JBZ; October 24th, 2011 at 06:23 PM.
    rpict, marcello, troygates and 5 others like this.

  2. #2
    Forum Addict sdbrownaia's Avatar
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    Make S Ride on The Rails-twist.pngVery slick, Note I made one circle family and nested it into another and then only needed half the parameters you made, Just multiple types. This also lets you move the circles off of straight, See attached.

  3. #3
    JBZ
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    That's why I posted it... We can do so much more with 'rails' than we could without... Building on one another's work is how breakthroughs come

  4. #4
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    "Mark Twain"
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    Quote Originally Posted by JBZ View Post
    Junior Member? How about horrible rating system!!! Oh well... We'll post here regardless of that mindless rating system...
    Well, this should earn you some MAJOR green cards! Best trick ever seen around here, without a doubt. Completely awesome...

  5. #5
    Forum Addict sdbrownaia's Avatar
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    Note that with the circle family, you can host it to points on a spline and really do some crazy stuffMake S Ride on The Rails-circles.png

  6. #6
    BIM there, done that cliff collins's Avatar
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    Like this..............
    Attached Thumbnails Attached Thumbnails Make S Ride on The Rails-flame-mass-closeup-2.jpg  
    elton williams likes this.

  7. #7
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    "RFO 2012 Spelling Bee Champion"
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    Quote Originally Posted by mdradvies View Post
    Well, this should earn you some MAJOR green cards! Best trick ever seen around here, without a doubt. Completely awesome...
    The Junior member rating is based off of post count. Hover over the green card and you see your rep status.

  8. #8
    Moderator
    "Mark Twain"
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    Quote Originally Posted by Alex Cunningham View Post
    The Junior member rating is based off of post count. Hover over the green card and you see your rep status.
    I know, but I figured he was talking about his 1 GC instead.

  9. #9
    JBZ
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    Quote Originally Posted by Alex Cunningham View Post
    The Junior member rating is based off of post count. Hover over the green card and you see your rep status.
    (Just to cry a bit more... :-))Yeah I get it but what a stupid (IMO) choice of words. There are much better choices for ratings if quantity is the only rating... if a user has 100 questions yet adds no educational posts they'd get a better "rating" that's just dumb... rating is supposed to be rating quality, not quantity:
    rat·ing/ˈrātiNG/

    Noun:
    1. A classification or ranking of someone or something based on a comparative assessment of their quality, standard, or performance.
    Last edited by JBZ; October 24th, 2011 at 08:47 PM.

  10. #10
    BIM there, done that cliff collins's Avatar
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    Dude--just post a bunch more times already! ( Jokes, man! )

    Great post, by the way. You are in "Advanced" territory here. Conceptual Massing is a very cool and powerful environment.
    Drew likes this.

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