├── CMakeLists.txt
├── README.md
├── alglib                    # ALGLIB src files
├── alglib_spline_fitting.cpp # spline fitting use alglib.spline1dfit
├── alglib_spline_fitting.h   # include file
├── chp_spline_fitting.cpp    # concave hull parameter spline fitting cpp
├── chp_spline_fitting.h      # concave hull parameter spline fitting include file
├── test.cpp                  # a test executable file
├── test.py                   # convert data to geojson
├── concavehull               # concave calculator
│   ├── concavehull.hpp 
│   └── delaunator.hpp 
└── example                   # how to use dll library
│   ├── CMakeLists.txt
│   ├── demo.cpp
│   ├── include
│   └── lib
└── utils                     # geometric tools
    ├── geometry.cpp
    └── geometry.h

mkdir build
cd build
cmake ..
make & make install

cp -r install/* example

cd example
mkdir build
cd build
cmake ..
make