Parse Geometry

[jeromerolland]

Hi, do you have an example for parsing geometry in ifc file ?

best regards, Jérôme

[jmirtsch]

Bonjour Jerome,

If you use the Work In Progress branch of the toolkit, then hoepfully below gives some insights into how to traverse the geometry.

Cheers,

Jon

        DatabaseIfc db = new DatabaseIfc("Filepath");
        List<IfcElement> elements = db.Project.Extract<IfcElement>();
        foreach(IfcElement element in elements)
        {
            foreach (IfcFacetedBrep brep in element.Representation.Representations.SelectMany(x => x.Items).OfType<IfcFacetedBrep>())
            {
                foreach (IfcFace face in brep.Outer.CfsFaces)
                {
                    if(face.Bounds.Count == 1)
                    { 
                        if(face.Bounds[0].Bound is IfcPolyloop polyLoop)
                        {
                            foreach(IfcCartesianPoint p in polyLoop.Polygon)
                            {

                            }
                        }
                    }
                }
            }
        }

[jeromerolland]

Hi Jon,

Thank you very much for your code sample.

Best regards,

Jérôme

[CJAndrew84]

Jon

Has this code example changed? I'm trying to use it at the moment and it's not liking "Bounds[0].Bound"

Chris

[jmirtsch]

Yes, I've been improving the plugin to use a "SET" (unordered collection) rather than a list when the IFC specification nominates it. You can use linq using "Bounds.First().Bound" instead of a zero index. Sorry for the breaking change, but it does improve the toolkit in other aspects.