IFC

The Industry Foundation Classes (IFC)^[1] is a CAD data exchange data schema intended for description of architectural, building and construction industry data.

IFC (*.ifc) files can be imported into the Tygron Platform.

Version IFC4 is supported, earlier versions (e.g. IFC2x3) might contain errors.

Example IFC of a bridge with colored faces.

Supported Spatial Structure Elements

An IFC file can consist of a hierarchy of spatial structures. The following spatial structure elements are currently supported:

IfcSite, IfcBuilding, IfcBuildingStorey, IfcProduct

Not every element is imported for these spatial structures. The following element types are accepted:

IfcBuildingElement, IfcGeographicElement, IfcDistributionElement, IfcElementAssembly, IfcTransportElement, IfcFeatureElement

Supported Representations

The following representations^[2] are supported:

BoundingBox
SolidModel
- ExtrudedAreaSolid (using Profile Definitions)
- FactedBreb with FaceBounds: EdgeLoop or PolyLoop)
MappedItem
Curve:
- Polyline
- IndexPolyCurve
TessellatedFaseSet:
- TriangulatedFaceSet
- PolygonalFaceSet

Profile Definitions

The following profile definitions^[3] are currently supported:

ArbitraryClosedProfile (outer and inner curves)
ParameterizedProfiles:
- CircleProfile (incl. hollow)
- CShapeProfile (excl. fillet)
- EllipseShapeProfile
- RectangleProfile (incl. hollow)
- IShapeProfile (excl. fillet)
- LShapeProfile (excl. leg slope, fillet and edge radii )
- TShapeProfile (excl. fillet, flange-edge, web-edge radii and web and flange slopes)
- UShapeProfile (excl. flange slope, fillet and edge radii )
- ZShapeProfile (excl. fillet and edge radii)

Styles

By default, IFC features will be colored in Light Gray. The following styles are supported that can override this color:

Surface styles: IfcSurfaceStyleShading; with style that has a SurfaceColour defined.
FillAreaStyle: IfcColourRgb and IfcPredefinedColour; both reference colors directly.

Textures are not yet supported.