svg from IfcConvert

S by smr02 on 27 Sep 2024, edited 30 Sep 2024 # +2 votes

I've found this Tweet from @aothms

I very much like the Idea of making quick sections from the command line while knowing orientation and location.

However, I don't manage to produce anything beside a empty svg file.

Am I doing something wrong, or does IFC convert for SVG currently not work?

A by aothms on 29 Sep 2024 #

It probably works, but it's a swamp of command line flags you need to learn how to navigate.

Here are some old flags I found lying around:


            input.ifc 

            output.svg

            -qy --plan --model

            --section-height-from-storeys --section-height=1.2 

            --door-arcs --print-space-names

            --auto-section --auto-elevation

            --bounds=420x297

            --scale=1:50 

            --svg-xmlns --svg-project

            --svg-poly

            --svg-write-poly

            --draw-storey-heights=left

            --storey-height-line-length=1.0

            --exclude entities IfcOpeningElement

You can also run this from python with perhaps a more sensible command line interface https://github.com/IfcOpenShell/IfcOpenShell/blob/v0.8.0/src/ifcopenshell-python/ifcopenshell/draw.py

Or just use Bonsai?

S by smr02 on 29 Sep 2024 #

Thank you for the hint, @aothms

Seems like my problem was, that i had no elevation set on my IfcBuildingStorey.

But I can't figure out yet, how i make a section cutting through my building.


import ifcopenshell.draw


draw_settings = ifcopenshell.draw.draw_settings(

    auto_floorplan=True,

    auto_elevation=True,

)                                            


output_data = ifcopenshell.draw.main(draw_settings, files=[ifc_file], merge_projection=False)

A by aothms on 30 Sep 2024, edited 30 Sep 2024 #


draw_settings = ifcopenshell.draw.draw_settings(

    auto_floorplan=True,

    auto_elevation=True,

    auto_section =True,

)

S by smr02 on 30 Sep 2024 #

Thank you!

Can i also control where to draw the section (section plane)?

And the depth of the section?

A by aothms on 30 Sep 2024 #

Not with auto_section, but you can create a IfcAnnotation(ObjectType=DRAWING) programatically to manually create a section at a location you want. There is currently no control for depth (as far as I recall, you're probably not the first to bring this up).