- Downloaded and parsed : routes.dat and airports.dat from openflights.org
- Compile & run main.cpp
g++ -framework PROJ -std=c++11 -I/usr/local/include/cairo -L/usr/local/lib/ -lcairo main.cpp
Change city on line 246 and 294 of main.cpp
I tried to draw quadratic curve instead of line but it was to difficult. I also didn't choose a good projection (WSG84).