README

Models

In this example, we're using IFC models from the Schependomlaan Data Set, the ‘Utah Teapot’ for BIM.

Pipeline Tools

We'll use these CLI tools to transform IFC into glTF:

• ifcConvert to convert IFC files to DAE

• COLLADA2GLTF to convert DAE to glTF

• gltf-pipeline to optimize glTF

We'll assume that these are installed relative to the current working directory.

Converting IFC to .DAE

First, convert the Schependomlaan IFC design model to COLLADA:

./IfcConvert schependomlaan.ifc  schependomlaan.dae

Converting .DAE to glTF

Next, convert the COLLADA to glTF 2.0:

./COLLADA2GLTF/build/COLLADA2GLTF-bin -i schependomlaan.dae -o schependomlaan.gltf

Optimizing glTF

Optionally, we can do a bunch of optimizations to the glTF, such as compress geometry:

node ./gltf-pipeline/bin/gltf-pipeline.js -i schependomlaan.gltf -o schependomlaan.optimized.gltf