ifcconvert from ifcopenshell from python

B by bernd on 28 Aug 2020, edited 31 Aug 2020 #

Is it possible to convert ifc goemetry to mesh format from ifcopenshells python interface directly? Means without the use of subprocess and run the ifcconvert binary.

J by Jesusbill on 28 Aug 2020 #

@bernd it is certainly possible. A very quick and dirty script, although not very robust but for simple geometries seems to work ok, could be something like this:


import ifcopenshell

import ifcopenshell.geom as geom

settings = geom.settings()

settings.set(settings.USE_WORLD_COORDS, True)

f = ifcopenshell.open('/path/to/ifc/file')

for obj in f.by_type('IfcProduct'):

    shape = ifcopenshell.geom.create_shape(settings, obj)

    geo = shape.geometry

    print(geo.verts)

    print(geo.edges)

    print(geo.faces)

The geo object has a list of vertices and lists of indices for edges and faces.

M by Moult on 28 Aug 2020 #

@bernd if you mean converting IFC to the formats serialised by IfcConvert (e.g. OBJ, DAE, etc), I do not think it is possible yet. However, if the Epic Games application is approved, @aothms would be providing Python access to the SVG serialiser, and maybe that may be the key to the rest.

B by bernd on 31 Aug 2020 #

thanks guys for your suggestions an information.