Author Topic: Clean not used hatch patterns  (Read 2142 times)

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Marc'Antonio Alessi

  • Swamp Rat
  • Posts: 1451
  • Marco
Clean not used hatch patterns
« on: December 12, 2018, 09:06:42 AM »
The attached file contains only 2 hatch made with Hexagons pattern:

1) A2013: if I use the command Hatch > Custom I see many unused patterns (I think from Microstation), see image

2) Bricscad (all): same command I do NOT see the unused patterns

3) A2013 + Bricscad (all): if I use the command -Hatch (not GUI) _p ? > I do NOT see the unused patterns

4) AutoCAD 2019: I get Fatal error on open (not solved!!!)

9) Question: How can I clean all the unused patterns?

roy_043

  • Water Moccasin
  • Posts: 1895
  • BricsCAD 18
Re: Clean not used hatch patterns
« Reply #1 on: December 12, 2018, 09:20:55 AM »
I assume that these *.pat references in fact point to files. Which would explain the differences you see between AC and BC. Have you searched for these files on disk?

Marc'Antonio Alessi

  • Swamp Rat
  • Posts: 1451
  • Marco
Re: Clean not used hatch patterns
« Reply #2 on: December 12, 2018, 10:09:47 AM »
I assume that these *.pat references in fact point to files. Which would explain the differences you see between AC and BC. Have you searched for these files on disk?
you're absolutely right, I never realized that in my 2013 Mechanical version (ONLY Mechanical) I had all these pats  :embarrassed2:
I'm trying in every way to understand why a stupid hatch can crash AutoCAD, is a problem that I have in many files…  :tickedoff:

roy_043

  • Water Moccasin
  • Posts: 1895
  • BricsCAD 18
Re: Clean not used hatch patterns
« Reply #3 on: December 12, 2018, 01:50:26 PM »
I have a hunch that the fatal error is related to the boundary of the hatch entities in the dwg. The generated boundary in BC looks strange.

Marc'Antonio Alessi

  • Swamp Rat
  • Posts: 1451
  • Marco
Re: Clean not used hatch patterns
« Reply #4 on: December 13, 2018, 03:15:10 AM »
Thanks for your time, I have another example more complex, no problems on BricsCAD/AutoCAD except AutoCAD 2017/2018/2019  :rolleyes2:

roy_043

  • Water Moccasin
  • Posts: 1895
  • BricsCAD 18
Re: Clean not used hatch patterns
« Reply #5 on: December 13, 2018, 05:24:47 AM »
The complexity of the generated boundaries suggests that these hatches were created by an application or a different CAD program. I notice gaps and splines in the boundaries in both dwgs.

Marc'Antonio Alessi

  • Swamp Rat
  • Posts: 1451
  • Marco
Re: Clean not used hatch patterns
« Reply #6 on: December 13, 2018, 06:16:00 AM »
Yes, that's what I think too, maybe it's MicroStation...  :knuppel2: