Open SketchUp, IFC and FBX files

.skp

SketchUp models saved by SketchUp 2021 or later: objects, section planes, OCCTAG notes, OCCLEVEL datums, what SketchUp hides, glazing.

.ifc

Building models: the hierarchy site › building › storey › IFC class › element, openings cut, storeys as plans and spot elevations.

.fbx

Models from other 3D software, Blender included: nodes and their names, hidden nodes, transparent materials.

.occs

A model captured by Occlusia Link.

.occp

An Occlusia project: the model and all its settings.

Drop the file on the window, or choose Import › Model (.occs, .skp, .fbx, .ifc); open a .occp with Open Project.... Dropping a .occc file imports a configuration.

Importing a model keeps the current settings and applies them by name: re-importing an updated model redraws it with every style you made. Importing starts a new history and leaves the current project file: save the result as a project.

Occlusia has no section editor: views come from the model. An IFC or FBX file with no views of its own gets:

• A plan per IFC storey, Plan - <storey>, cut 1.20 m above its floor — or one Plan 1.20 m above the lowest point.
• Four elevations, North Elevation, South Elevation, East Elevation and West Elevation, outside the model and looking at it (north is the file's +Y axis).
• A spot elevation per IFC storey.

To define your own views in an FBX or IFC file, place a camera, an empty or any placed object looking along its −Z axis, and name it OCCSECTION followed by a label — or give it the property occlusia_kind = section. OCCTAG and OCCLEVEL work the same way for notes and spot elevations.

Occlusia uses the unit the file declares. When an FBX or IFC file says millimetres, centimetres or inches but the whole model would then be less than a metre across, Occlusia asks whether to read it as metres instead — a common mistake of older exports.