Revit - How to change the hatch pattern from straight lines to dash?

[Anonymous]

How do I change the hatch on a modeled ceiling from straight lines to dash?

title edited for clarity

[barthbradley]

with a .pat file

[Viveka_CD]

Hi @Anonymous

Thanks for posting on the Revit Architecture forum.

Please see article on Custom Pattern Files

I just wanted to follow up here, any progress on this issue? Let us know if you require further feedback from the community.

Please mark any posts that help with "Accept as Solution" and thanks! Kudos welcome.

[Anonymous]

Still no progress

[Sahay_R]

Why do you want them dashed - they will show as solid lines on a reflected ceiling plan?

[Anonymous]

For demo

[Sahay_R]

Sorry - not possible.

You can see the outline of the ceiling in hidden lines in a demo plan, but not the hatch. If that is what you need to see, what I would do would be to remove the hatch from the ceiling entirely.

Unless you can create a custom hatch with dashes. The closest that I could find was in ACAD.PAT (the AutoCAD pattern file) - ANGLE was the closest that I could find.

General practice is to leave the hatch the way it is. Anything else would be quite a workaround.

[chrisplyler · Accepted solution]

Method...

And the .pat file you will need...

[Viveka_CD]

Hi @Anonymous

See article: To Create a Hatch Pattern with Dashed Lines which describes how you can open an existing PAT file or create a new file in a text editor that saves in ASCII format 

Regards,

[Anonymous]

Not possible as Revit's API is written. We need to be able to change the pattern of an element to a model pattern which displays dashed. Getting the dashed patt is not the problem. Having Revit assign a new model pattern to an element which is being deleted is what we are asking for. This can be resolved a couple of ways. 

1. Allow users the ability to override model patterns for elements in phase graphic override dialog.

2. Allow users to access the parameters "Phase Created" and "Phase Demolished" in the filter creation dialog. 

[Anonymous]

What are you talking about?!  

I have the demo pattern, my post states that. That's not the problem AT ALL.

The problem is that because ceiling patterns are Model Patterns and you can only override this with a drafting pattern. A 2x4 ACT ceiling needs to graphically display as a model pattern to represent the tiles at 1:1.

The model pattern for a ceiling is type based and cannot change by the phase condition (demo in this case), by filters, by manual override in view, or any other method. 

If you don't read the post or have anything meaningful to add please don't respond.

[martijn_pater]

In regards to your question to have "Revit assign a new model pattern to an element which is being deleted." I don't think this is possible at the moment for a single element unless this is the only element being deleted for your project. In that case you can apply a material to the demo phase. If it's not the only element being deleted you could create a seperate demo type with demo ceiling material specifically for this ceiling.

related topics:
 https://forums.autodesk.com/t5/revit-ideas/materials-based-filters/idi-p/7515291 (not available yet)

[Anonymous]

While it has been shown that it is indeed possible to graphically change geometry from its "typical" hatch to a demolition hatch, the point is that this process does not follow the graphical override protocol find elsewhere in the software. For instance, I don't have to create new types with special demolition hatches for walls, lights, or mechanical families I'm demolishing, so why am I doing it with ceilings? How would I even know to do that?

If I am creating a new ceiling type specifically for demolition, I am now also affecting other automated features, so I have to now take that into account. For example, I need to add/manipulate parameters and add filters such that I do not have unwanted behaviors with schedules.

In the spirit of Steve Krugg and his emphasis on ease of use and intuitive workflows, please "don't make us think" about things that provide no added value to our deliverables. Thanks.

[ToanDN · Accepted solution]

Download pyRevit and you can create fill patterns yourself by simply drawing a module using detail lines and let the tool generate the pattern/filled region and/or export to a pat file.

[Anonymous]

You're a savior. 

[seanUFNGF]

I know this isn't the solution we were looking for, but one idea is to create a masking region over the portion to be demo'd with a demo line type for the outline and then set the surface transparency to 25% (or whatever value you prefer) under 'Override Graphics in View'.  I know this is an extra step that would be nice not to have to do, but at least it's a way of giving the ceiling a demo'd-ish appearance.

[cbcarch]

Don't do it!

Use the .pat method described above.

[seanUFNGF]

That would require making a new ceiling type that can receive the new dashed pattern so that the ceilings of the same type that are NOT being demo'd would still have the solid line pattern, correct? So two ceiling types... one with solid lines for ceilings to be kept, and a second type with dashed lines for ceilings to be demo'd.  That could work too. Upon rereading this thread, I think @martijn_pater was describing something like that.

[cbcarch]

Yes--exactly.

Then of course make sure you use Phases correctly when demolishing the demo ceilings.

[anita]

I am so grateful for your post.  This was exactly what I needed, with a .pat file to boot.  THANK YOU!