For the project compilation step you just need to execute the make command in your linux terminal from the project folder.
If you are on windows, make sure that you have the g++ compiler added to your environment path and execute the following command in your command line:
g++ -g --std=c++11 main.cpp 3DPlyModel.cpp glcTexture.cpp -o main -lpng -lGL -lGLU -lglut
After compiling the project, you can start to vizualize your ply model with the following command on the project compilation folder:
./main <PLY file>
For example, for the model airplane.ply, we execute the command ./main airplane.ply for getting the following screen:
The keyboard keys listed on the terminal must be used on the model visualization to take effect.