Roads from 3D relief and bridges

Online demo

Update drag-and-dropped files by raycasting on 3DTiles models. The files must be GeoJson files containing LineString or MultiLineString features. The coordinates of those lines will be updated with the altitude (Z coordinate) of the raycast intersection point.
The raycast only works on visible 3DTiles layers. If you don't want to use relief/bridges to update your altitudes, you can hide the corresponding layer with the LayerChoice widget.

Set layers visible/invisible:

Drag and drop:

Roads before update:

Roads after update:

Install the application

The application can be locally (on your desktop) started in the following way

npm install
npm run build

Run the application

Run the application with Python:

python3 -m hhtp.server

and then use your favorite (web) browser to open http://localhost:8000/.

Docker

A docker version is available here.