bim

Official source code of FreeCAD, a free and opensource multiplatform 3D parametric modeler.

This project allows the alignment and correction of LiDAR-based SLAM session data with a reference map or another session, also the retrieval of 6-DoF poses with accuracy of up to 3 cm given an accurate TLS point cloud as a reference map (this map should be accurate at least regarding the position of permanent elements such as walls and columns).

Unreal Engine 4/5 plugin for importing objects from Speckle v2.

CasCADe 4D visualization system for virtual construction planning

Generates C++ classes and high-performance STEP file parsers from EXPRESS definitions to process openBIM® IFC model files

Convert a BIM model(IFC file) to a CityJSON file.

Bitub TRex Dynamo Plugin for IFC post production

High-performance geometry WASM core for bldrs-ai/conway

Implement a automatic BIM(IFC model) to Geo(CityJSON model) conversion for one building

Immersive Mixed Reality (MR) Engine for Meta Quest 2/3. C++ framework for large-scale BIM visualization with high-precision Passthrough alignment and OpenXR integration.

An OMNeT++ Open-Source BIM-based Plug-In for Automatic Environment Generation.

Translation of BIM objects out of BIM360 using to Forge API to SE using Open Cascade Technology (OCCT)

🔍 Simulate quantum entanglement using C++ with grids and random particles, offering an engaging way to explore this fundamental concept.

C++20 IFC inspection toolkit: query models, geometry, CSV/JSON export, local web console and 3D viewport

Research-grade Revit-to-STL pipeline with voxel geometry, native C++ checks, and reproducible validation.

Cross-platform C++ CLI for loading, inspecting, editing, and saving IFC models through a synchronous JSON Lines interface powered by IfcOpenShell.

OpenPiiM technology — BIM inspired framework for integrated management of projects beyond the AECO industry. Project life-cycle information Management (Project Information Integrated Management)).