How to change the linetype of fill pattern?

[AustinMcCollum]

I want to change the linetype of the fill pattern for a product....ie I want the ceiling tile to show up as dashed lines instead of solid lines. How can I do that through the .pat file?

[ToanDN]

You need to create a new fill pattern with dashed line definition.

https://ein.sh/pyRevit/pyrevit/updates/2019/05/27/4623.html

[AustinMcCollum]

Ok, which spot in the .pat is that and what number makes it dashed?

[Anonymous]

All the instructions are in the revit.pat file...  But if you want the easy way of doing it, download the PyRevit add-in and make your own patterns.

"; Each line family is a set of parallel lines that build one "direction" of a pattern. A complete
; pattern may be defined by several families each defining part of the final, such as the vertical
; joints of brick coursing. The lines are described in the two dimensions of a face as follows:
;
; angle, x-origin, y-origin, shift, offset, dash, space, dash, space ...
;
; Angle specifies the direction, in degrees, of a set of lines relative to the x-axis. The first
; line in the set starts at the specified x,y-origin. Parallel lines are drawn as specified by
; Offset and Shift to fill the entire face. Offset defines the distance between parallel lines.
; Zero Offset is not allowed. Shift moves the pattern of dashes and spaces along the length of
; each new parallel line. Shift is ignored if the line is solid. Distances are expressed as
; decimal numbers (using peroid as the decimal separator) in the units previously specified.
;
; The dash-space sequence defines a repeating pattern of dashes and spaces for a line. If it is
; omitted, the line is solid. Positive numbers define dashes, negative numbers define spaces, and
; zero specifies a dot. If you begin a pattern with a space, do not alternate dashes and spaces,
; or do not end with a space, Revit will introduce tiny dashes or spaces to compensate. Revit
; expands dots and very short dashes into dashes of a minimum size."

[hugha · Accepted solution]

No need to install pattern generators for an orthogonal grid pattern drawn with dashed lines as they are pretty well simple enough to do in your head  - or at least within Notepad. 

Most of this template is fixed -  just plug in your own values:

;%VERSION=3.0
;%UNITS=MM
*FILLNAME
;%TYPE=MODEL
0,0,0,0,depth,dashlength, - spacelength

90,0,0,0,width,dashlength, - spacelength

So for a say, 600mmx300mm grid drawn with 50mm long dashes and spaces:

;%VERSION=3.0
;%UNITS=MM
*grid300x600with50-50dashedlines
;%TYPE=MODEL
0,0,0,0,300,50,-50

90,0,0,0,600,50,-50

Save to a file with .PAT extension for loading to Revit. 

Beware NotePad will try hard to append a .TXT extension - simply override by selecting Save As Type:  All Files (*.*) within the Save dialog.

hth,

Hugh Adamson

www.hatchKit.com.au