Discovering the project's code structure

Open the project's VideoSynth folder and find the src folder there. It contains the project's source code files, as shown in the following screenshot:

The project's folder contents (the center column) and its source code files placed in the src folder (the right column)

There are three source files:

• main.cpp: This file contains the code to initiate a window and run the app. We will leave it unchanged.
• ofApp.h: This file is a declaration of the ofApp application class, which consists of a declaration of the functions, such as setup(), update(), draw(), and some others. Currently, we do not need to add anything there.
• ofApp.cpp: This file contains definitions of declared functions. This is the file we will edit right now.

The following functions, declared in the ofApp class, are called by the openFrameworks engine:

• setup(): This function is called once at the beginning of the application execution. This is the place to implement a project...