svg from IfcConvert

smr02

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?

aothms

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?

smr02

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)

aothms

draw_settings = ifcopenshell.draw.draw_settings(
    auto_floorplan=True,
    auto_elevation=True,
    auto_section =True,
)

smr02

Thank you!
Can i also control where to draw the section (section plane)?
And the depth of the section?

aothms

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).