writeXKTModelToArrayBuffer throws invalid size error

[intrida-dev]

writeXKTModelToArrayBuffer throws invalid size error

[xeolabs]

We have a solution for this, I'll describe below.

This happens when NodeJS cannot allocate all the necessary memory it needs to convert large files. NodeJS always has a hard 1GB limit on how much memory it can allocate for text strings in memory. When we try to process large glTF and JSON files, users often encounter the error you've shown.

In xeokit-sdk 2.4.0 we can now avoid this error by using the model splitting feature described in this tutorial.

For splitting, we extended ifc2gltfcxconverter and convert2xkt, to automatically split models into parts, and we also extended xeokit-sdk and xeokit-bim-viewer to seamlessly load split models. Note that ifc2gltfcxconverter is our closed source tool provided by Creoox with a commercial license.

As a result, we are now able to convert and load models like this 2GB Baku stadium IFC, so it seems to solve this problem pretty nicely: