Demo

A functional online demo can be found at: www.chronocity.net (22-6-2017)

Before executing a change detection, make sure the service is running by browsing to www.chronocity.net:12839/test

ChronoCity

Installation

Install a (local) webserver. E.g. Apache Tomcat
Install all Python dependencies (see next section)
Download this entire repositery as .zip
Extract the zip into your webserver-webapps directory. Make sure the paths look like: webapps/OPCM/chronocity-engine/.. and webapps/OPCM/chronocity-viewer/..
Download the AHN datasets in potree-structure here: download
Extract the two folders AHN2 and AHN3 and put them both under chronocity-viewer/pointclouds/
Get a LAStools license-file (.txt) and save it under chronocity-engine/Tools/LAS_tools
The ChronoCity-viewer is ready to view. You can access it through your webserver and browse to domain:port/OPCM/

Python Dependencies For the server-side running correctly, you should also make sure you have the following dependencies installed on your Python interpreter;

fiona
laspy
flask
copy
os
json
multiprocessing
time
shutil
shapely

Setup

In /OPCM/chronocity-engine/server_service.py at the bottom you should replace the two paths serv_path and potree_path with the path to the two installations folders like below. Be aware of the double '\' ! The server listens to port 12839 by default, but you can specify it yourself if needed.
```
 port = 12839
 serv_path = "C:\\geo1007\\apache-tomcat-8.5.14\\webapps\\OPCM\\chronocity-engine\\"
 potree_path = "C:\\geo1007\\apache-tomcat-8.5.14\\webapps\\OPCM\\chronocity-viewer\\"
```
Run the server_service.py to start the server. You can test if it is running correctly by browsing to localhost:12839/test in your browser. It will return the message ACTIVE if it is running.
The viewer runs on port 8080 by default and relies on the default value for the server-side. If you have changed the default port, you should edit OPCM/chronocity-viewer/build/potree/potree.js and search for localhost:. Replace the entries with your custom ports.

Console controls All important interactions can be done within the GUI. There are also some other usefull command for more control. You can use these in your browser's webconsole;

getActivePC();                     # returns a list of the visible pointclouds [AHN2, AHN3, AHN23, AHN32]
checkLayers(bool,bool,bool,bool)   # sets the visibility for all layers (AHN2, AHN3, AHN23, AHN32)
toggleAHN()                        # toggles the view between AHN2 and AHN3
saveAsImage()                      # saves the current view as a .png image (prompt)

willemvanopstal/OpenPointCloudMap

Demo

ChronoCity