Extracting Hatch Pattern Files from Drawing

[zaktorres]

Is there a way to easily extract hatch patterns from an existing drawing?

I get a lot of drawings from a bunch of different designers who use various software programs, and their hatch patterns show on the drawings correctly, but I am unable to modify the spaces, scales, etc. I would like to extract the hatch patterns if that's possible. It is not feasible for me to ask all of the original designers for their hatch patterns and I don't want to have to find patterns online that are similar.

For instance, here is a stone pattern one designer uses. It shows on the print correctly, but since I do not have it in my .pat files I am unable to select additional spaces for it to fill.

I have looked through the forum, and haven't found a solution; I would like an answer and not a remark to keep looking.

[pendean]

There are many LISP that extract hatches on the web: but if that hatch replies on a custom shape file, then you might just be out of luck @zaktorres 

Options:

1) why not ask the file creator for that hatch? easiest solution ever.

2) GETPAT is a free LISP, you can pay for similar routines too

https://sourcecad.com/export-custom-hatch-pattern-in-autocad/ 

https://www.google.com/search?q=autocad+getpat+lisp 

3) build your own library from free content

https://coronado.com/hatchpatterns/ 

https://architextures.org/hatches

https://www.cadhatch.com/free-downloads 

HTH

[zaktorres]

1.  We deal with over 60 original designers whose projects span the past 30 years and are made across various software programs, so requesting pattern files may be unreasonable or impossible, I am not aware how other software  programs handle their hatch patterns.
2. I have tried the GETPAT lisp and have had issues with it working properly; I am not sure if this is a function of it being a 25 year old lisp program that has not been updated.
3. I have used some of those hatches and they are helpful. I was hoping to add the existing hatches to my pattern library, so that I did not have to change the pattern definition with every new project.
   
   Thank you for the response.

[zaktorres · Accepted solution]

I found another thread when I was looking at the error I was getting with getpat.lsp file, and it had an updated lisp file that works

https://forums.autodesk.com/t5/visual-lisp-autolisp-and-general/getpat-lsp-error/td-p/6974597