Both releases can be downloaded from the ifcopenshell.org website. As always, it includes IfcBlender, IfcMax and IfcConvert. The 0.5 release now introduces ifcopenshell-python, a Python module for parsing and writing IFC files and creating BReps and explicit triangulated geometry from the implicit IFC geometry. The BIMserver plug-in has been provided with updated executables for its geometry interpretation.
The 0.4 releaseAn excerpt of the improvements is provided below:
- More faithful use of precision information in IFC
- Fixes and improvements for IfcLShapeProfileDef, IfcCShapeProfileDef, IfcRectangleHollowProfileDef, IfcCartesianTransformOperator3D, IfcSpecularExponent, IfcFacetedBrep, IfcPolyline, IfcPolyLoop
- Prevent errors in triangulations due to zero-length normals
- Fixes for parsing files with comments
- Write unique IDs in Collada files
- Speed up output of Wavefront OBJ files
- Less unnecessary nurbs conversion in the STEP and IGES output
- Check the validity of solids and fillets
- Make parsing and serialization locale-independent
The 0.5 preview releaseSimultaneously, a large amount of improvements and new features have been added to the 0.5 branch, which we do not want to withhold from the community. Hence, a preview of the 0.5 branch is released for adventurous users. Most notably, it contains all the improvements to geometry handling as outlined in this post and a brand new Python interface and coupling with pythonOCC. The Python interface has been built in collaboration with the FreeCAD team and its users, which are about to release a new version that includes a very promising full blown IFC importer and exporter. For programmers a new API is introduced that supersedes the IfcGeomObjects API. A new output format is added to IfcConvert which provides textual output from the IFC file that describes the header, decomposition structure and property values in XML format.
Introducing IfcOpenShell AcademyWith the introduction of the Python interface to IfcOpenShell and the integration with pythonOCC, IfcOpenShell becomes even more suitable as a platform for academia, research and rapid development. With Python+IfcOpenShell+pythonOCC+Qt a complete framework is presented to interactively and visually present, analyse and construct IFC data. IfcOpenShell Academy provides an overview of quick recipes or building blocks to accomplish common tasks related to IFC. If you wish to contribute a recipe to the cookbook contact firstname.lastname@example.org.
Enjoy! And remember that IfcOpenShell still needs your help!