Extend the SceneView WebGL engine

This sample shows how to use the external renderer interface of a SceneView. An external renderer offers a low-level interface to access the SceneView's WebGL context, and thus enables creating custom visualizations that interact with the scene the same way as built-in layers.

In this sample, wind measurements are queried from a service and used to place animated windmills and determine their orientation and the blade rotation speed. This data was created by modelling a windmill in Blender and then manually extracting the raw geometry data. In a production application the geometry would be loaded from another data source (e.g. glTF); loading geometry files is out of scope of this sample.

Important notes:

• This sample shows experimental functionality, please read the documentation carefully before using it in a product.
• This sample targets expert developers familiar with WebGL and hardware-accelerated 3D rendering.
• The wind measurements come from a live service. The animation depends on the current weather at Palm Springs.