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Thread: Revit Hatch Pattern Decoded

  1. #1
    I could stop if I wanted to Chirag Mistry's Avatar
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    Default Revit Hatch Pattern Decoded

    This is something a collegue of mine put together.
    You can follow these rules to create certain custom patterns using notepad.
    Attached Files Attached Files

  2. #2
    AUGI Addict Scott Hopkins's Avatar
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    Default Re: Revit Hatch Pattern Decoded

    Very nice explanation.

    Thanks!

  3. #3
    All AUGI, all the time
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    Default Re: Revit Hatch Pattern Decoded

    In http://new.cadalyst.com/code/members/oct05.zip, one of the lisp routines is Hatch Maker, where you draw in a 1x1 unit square in autocad and export as a pattern file.

    You can then use the hatch scale editor http://new.cadalyst.com/code/members/jan07.zip to change the scale of the apttern, or adjust the scale when importing to Revit.

  4. #4
    Revit Mararishi aaronrumple's Avatar
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    Default Re: Revit Hatch Pattern Decoded

    Note that in the example - you end up with a hatch pattern that over a long distance will result in inaccuracies. 2.667 * 3 = 8.001 Seems small, but on big buildings I've had it result in rounding errors.

    A better pattern definition is:
    0, 0,0, 0, 8
    0, 0,2.667, 0,8
    0, 0,5.334, 0,8
    etc...

    This put the distance between any three lines at exactly 8" spacing.

    Both the AutoCAD and Revit patterns have the small inaccuracy....
    Don't drink the Kool-Aid...
    Aaron Rumple, AIA

  5. #5
    The Silent Type luigi's Avatar
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    Default Re: Revit Hatch Pattern Decoded

    It's good that you pointed that out....it's a huge deal even in a 2 story brick building...I've been meaning to do what you posted, but haven't had the time to modify the pat file....

    Thanks!


    Quote Originally Posted by aaronrumple
    Note that in the example - you end up with a hatch pattern that over a long distance will result in inaccuracies. 2.667 * 3 = 8.001 Seems small, but on big buildings I've had it result in rounding errors.

    A better pattern definition is:
    0, 0,0, 0, 8
    0, 0,2.667, 0,8
    0, 0,5.334, 0,8
    etc...

    This put the distance between any three lines at exactly 8" spacing.

    Both the AutoCAD and Revit patterns have the small inaccuracy....

  6. #6
    Count (Formula) dbaldacchino's Avatar
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    Default Re: Revit Hatch Pattern Decoded

    How can I take a custom pat file I created and use it in Revit as a model pattern? It says that "No Model Type Patterns found". I know there's another method of importing a dwg with the hatch and exploding it, but I'd rather use the pat file directly. Anything that needs to be added to the pat file for this? Thanks.

    EDIT: Nevermind, got it. Just needed to add ";%TYPE=MODEL" to the pat file.
    Last edited by dbaldacchino; 2007-03-19 at 06:12 PM.

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