I used java 19, but java 17 should work as well

git clone https://github.com/lazystone/digpro.git
cd digpro
./gradlew clean build

# Run application
java -jar build/libs/digpro-0.0.1-SNAPSHOT.jar

• You can use mouse to move over the map(drag&drop it).
• There is not any tests but there isn't much business logic either.
• Method which is used to filter out visible locations is simple, for bigger datasets something like kd-trees should be used.
• Things like locations URL and auto-reload frequency should be moved to application properties rather than to be hard-coded, but I'm out of time now.
• ViewPort coordinates are stored as fields in MapCanvas, but more correct way is to send them as parameters from mouseDragged to refresh method to avoid possible inconsistency(again out of time to fix this).