COTMApp provides the application entry. Because it is inherited completely by MFC there has nothing to be done in here. In other words this class has been untouched since its creation by the wizzard.

COTMDlg is the main Window of this application. It provides pointers to COpenGL (the rendering window), to the panel on the right side of the application and to some other common window controls (e.g. status bar, menu, ...). The whole communication between the controls and the application-logic is transferred (indirectely) over COTMDlg.

This class just provides a Dialog which shows version information.

COpenGL is inherited from CWnd and provides the drawing routines. This class even holds the very important CRenderer object, which is a private member and can only be accessed by COpenGL.
All necessary environment variables are first controlled in COpenGL, before they are submitted to the Renderer and further processed.

CPanel provides the functionality for the User Interaction. In other words it implements the GUI.

CFileElement is meta-data and data in one class. It provides functionality for addinf directories and files, finding them via name and position and randomizing sizes (pseudo random-function). For further details see: FileElement.h and FileElement.cpp.

This class parses a directory and adds the read files and subdirectories to the CFileElement. There has also been defined a method called ReadXML() for further implementations for parsing XML-Files.

This class handles all the pre-rendering routines. It calculates positions for slice-and-dice rendering, pivot-by-middle and pivot-by-size rendering. Further CRenderer determines color by a applied attribute (size, creation-date, last-modified-date or random).