OSArch Community

4th July 20:00 UTC Monthly Meetup

  1. M by Moult on 16 Jun 2020, edited 8 Jul 2020 #

    The next meetup will be on the 4th of July 20:00UTC (8PM) (i.e. the first Saturday of the month).

    I'm looking for volunteers to give a short minute presentation or demo about any cool open source related thing :) You can talk as short or as long as you want! Or, if you'd like something to be talked about, please also suggest it!

    Please see the wiki to add your topic: https://wiki.osarch.org/index.php?title=Monthly_Meetup

    If you're up for it, add yourself to the spreadsheet and if you add your email too, I'll send around a reminder email:

    https://docs.google.com/spreadsheets/d/19EzmthOp5hGYFTZCgOIm51n7hvcp_F8nB_XLYeTJ0zU/edit#gid=0

  1. C by carlopav on 18 Jun 2020, edited 18 Jun 2020 # +1 votes

    Just reporting the proposal in the wiki page:

    Possible points for discussion

    1. BlenderBIM logo

    2. Pros/cons different modelling paradigms solid/nerbs/mesh (duncan would love for someone to give a presentation on this subject)

    3. Introduction to IFC (why IFC in open source, introduction to IfcOpenShell, different implementations in Blender and FreeCAD, goals for Ifc support in the near future). Please @Moult !

    4. A quick preview of new FreeCAD BIM WB experimental tools (by carlopav/yorik, not more than 5 mins)

  1. B by brunopostle on 18 Jun 2020 # +3 votes

    I can do ten minutes on Homemaker (evolving houses with Perl) if we need to fill some time.

  1. J by Jesusbill on 18 Jun 2020 # +1 votes

    @brunopostle said:

    I can do ten minutes on Homemaker (evolving houses with Perl) if we need to fill some time.

    I feel talking about this project would deserve a keynote, not just 10 minutes

  1. C by carlopav on 18 Jun 2020 #

    @brunopostle said:

    I can do ten minutes on Homemaker (evolving houses with Perl) if we need to fill some time.

    Definitely agree with @Jesusbill. we can postpone some topic I proposed to leave more space to homemaker

  1. M by Moult on 18 Jun 2020 # +1 votes
  1. Y by yorik on 22 Jun 2020 # +1 votes

    I vote for homemaker too! Would love that

  1. D by DADA_universe on 27 Jun 2020 #

    @brunopostle said:

    I can do ten minutes on Homemaker (evolving houses with Perl) if we need to fill some time.

    Fascinating.

  1. D by duncan on 28 Jun 2020, edited 28 Jun 2020 #
  1. J by Jesusbill on 28 Jun 2020 # +1 votes

    I would also like to hear about A quick preview of new FreeCAD BIM WB experimental tools, #4 from the proposed points by @carlopav

  1. M by Moult on 29 Jun 2020 #

    Pinned to the top!

  1. B by brunopostle on 1 Jul 2020 # +2 votes

    While putting together the materials, I'm thinking that I might need a bit longer than ten minutes to do Homemaker

  1. J by Jesusbill on 2 Jul 2020 #

    @brunopostle said:

    While putting together the materials, I'm thinking that I might need a bit longer than ten minutes to do Homemaker

    As a keynote you can do way more than 10 minutes, I'd say as much as needed. Looking forward to your presentation

  1. M by Moult on 2 Jul 2020 # +1 votes

    Can't wait to hear more about homemaker too! Take as long as you need!

  1. D by duncan on 4 Jul 2020 # +1 votes
  1. M by Moult on 5 Jul 2020 # +9 votes
  1. C by carlopav on 6 Jul 2020 # +1 votes

    Thanks @brunopostle to recall the Alexander's pattern language! it's a great book :)

  1. P by paullee on 6 Jul 2020 # +2 votes

    Thanks for the presentations on Hommaker and FC experimental BIM objects :)

    Interested in the diagram describing the relationship between rooms - studying Arch Space in FreeCAD, and wondering how the relationship between the Spaces (Rooms), doors etc. could be established / described in a program.

    I have been trying to define a ArchSpace by identifying the walls enclosing it, so I can establish Space (room) <--> defining Walls. Only have basic Python knowledge atm. So if the relationship between Spaces (Rooms) can be described, a bubble diagram like graph can be generated ?

    Thanks for any idea

    !

    Arch Spaces in FreeCAD

    !

    !

  1. M by Moult on 6 Jul 2020 #

    @paullee you may be interested to know that there actually is a space / wall /door relationship. One of these is called "Space boundaries". I'm not too experienced with them, but I think @Cyril knows these much more.

  1. P by paullee on 7 Jul 2020 #

    Sounds interesting, had minimal IFC knowledge atm though :)

    Can't figure out if it describes /relationship /between .Spaces (Rooms), interconnecting doors ?

    And if any openspace library tackle these kind of relationship ?

    (FreeCAD has Link to connect objects but /only for Acyclic relationship, so can't describe the web-like graph in the shown diagram)

  1. B by brunopostle on 7 Jul 2020 # +1 votes

    @paullee the Homemaker circulation graph is derived from the graph of wall connections (it is the 'dual' graph), but this is easy in Homemaker because I can guarantee that all walls connect.

    IFC space boundaries are not defined as a cyclic graph, the spaces on either side of a wall are associated with the wall one at a time. So to determine if two rooms are adjacent you need to check to see if they are both connected to the same wall. You could construct a cyclic circulation graph from this information, but it isn't stored directly in the IFC file.

    There is likely a standard python module for creating, querying and manipulating graphs, this isn't the kind of data structure that you would roll yourself.

  1. C by carlopav on 7 Jul 2020 # +1 votes

    nice @paullee and @brunopostle , this is really interesting. The new wall experimental object knows when a wall is connected to it, and to which wall it have to connect to (and it does not have cyclic reference problems in FC, also if it rely on cyclic references), so perhaps a graph representing wall connections can be "easily" implemented?

  1. P by paullee on 7 Jul 2020 #

    Thanks all !

    Maybe anyone can point out the presence of a python module for creating similar kind of graphs to see if it help ?

  1. M by Moult on 7 Jul 2020 # +1 votes

    @paullee perhaps here?

  1. P by paullee on 7 Jul 2020 #

    Thanks @Moult. I am randomly looking around trying to make sense with my minimal python knowledge of what they are providing :)

    @brunopostle Can you slightly elaborate the steps how you generate the graph ( the 'dual' graph ? ) with the wall connections information you indicates. It seems this maybe way beyond my capabilities to understand more at the moment.

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