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Experimentations with terrain elevation data for generating and serving 3D Tilesets

This tool allows the user to visualise 2D height maps in 3D using the CesiumJS library.

• GeoServer v2.15.1
• QGIS v3.4
• pgAdmin4
• PostgreSQL v9.6
• PostGIS v2.3.9
• Docker
• Go
• Cesium Terrain Builder
• Cesium Terrain Server
• Node Package Manager (NPM)
• JDBC Image Mosaic Plugin extention (compatible with the GeoServer version)

Exract the JDBC Image Mosaic plugin zip contents into the directory geoserver-2.15.1/webapps/geoserver/WEB-INF/lib
Install Cesium Terrain Builder and Cesium Terrain Server using Docker
Cesium Terrain Builder requirements:

• gdal version>=2.0.0 installed on system
• gdal source developement header files
• Cmake should be available on the system

Cesium Terrain server requirements:
system should have Go installed as the server is written in Go.

Setting up the terrain files for serving,

If the folder system is like this:

/data/files/
├── rasters
│   └── DEM.tif
└── tilesets
    └── terrain 

To create terrain tiles from DEM files,

1. To load cesium terrain builder in docker, in the bash shell run:

   docker run -t -i homme/cesium-terrain-builder:latest /bin/bash

2. To check that the cesium terrain builder has been sucessfully loaded, run:

   ctb-tile --version

3. To mount data from host directory in the docker container, run:

   docker run -v /data/files:/data -t -i homme/cesium-terrain-builder:latest bash

   Here, the host directory /data/files is mapped to to /data in the container.

4. To tile the file /data/rasters/DEM.tif, run the command:

   ctb-tile --output-dir /data/tilesets/terrain/test /data/rasters/DEM.tif

   You will find various .terrain files in the directory: /data/tilesets/terrain/test

To run the cesium terrain server to visualise the terrain tiles, run:

docker run -p 8080:8000 -v /data/docker/tilesets/terrain:/data/tilesets/terrain \ geodata/cesium-terrain-server

Enter http://localhost:8080/ in the web browser to visualise the served terrain using Cesium.

For bugs or issues, go to: Cesium Terrain Builder or Cesium Terrain Server

Download the source code from: Cesium-BISAG