[Feat]: Parse Design Transfer View IFC

[agonzalezesteve]

What is your idea?

Design Transfer View is a Model View of IFC 4 that lets edit geometry.

The most popular Model View of IFC 4 is the Coordination View but, for example, the geometry of the openings is substracted from the geometry of the walls. The geometry exported from the authoring tool cannot be edited.

Despite the mesh of the walls is rendered substracting the voids of the windows in three.js. It would be great parse also the gross geometry of the walls.

[beachtom]

Do you have an example of this? And how it works currently?

[agonzalezesteve]

In this repository there is this example file: https://github.com/buildingSMART/IFC/blob/776c6d92a3674bc8a5b371061a40a09a4e6b8354/Examples/Advanced%20geometric%20shape/Examples/Bath%20CSG%20Solid/File.ifc

The object
#2017=IFCWALL('0g4jCt6NPAqAFd1yeSV1So',$,'CellComplex/exterior',$,$,#2105,#2099,$,.SOLIDWALL.);
has an IfcExtrudedAreaSolid as a SweptSolid representation. But the geometry is rendered substracting the openings of the windows.

I'm interested in the geometry of the wall parsed but without substracting the geometry of the windows.