This is the heavily modified 3D Tiles Samples Generator which converts a group of GLTFs to a B3DM. Changes have been made to account for gltf models with large number of indices, meshes and primitivees. The materials as generated with IFC2GLTFs will also be comaptible. The final b3dm contains a batch table hierarchy which includes information from the original ifc files (such as GUID, BATID, BimServer Dimensions and BimServer Constraint) as the properties of each object. This is done using the json (Streaming) export files from BimServer.
Please visit https://github.com/AnalyticalGraphicsInc/3d-tiles-tools/tree/master/samples-generator for the original 3d tiles sample generator code.
Clone this repo and install Node.js. From the root directory of this repo, run:
npm install
node bin/generator.js
To convert the model effictely, before execution data folder need to include your GLTFs and SJSONs from IFC2GLTFs conversion and need to be specified in lib/createBatchTableHierarchy.js. The folder structure should be as follows:
-----/data/
---------------model/
---------------------------GLTFs/
---------------------------SJSONs/
The output 3D tile will be generated in output\Hierarchy\BatchTableHierarchy\model folder and will include the b3dm and tileset.json.