dot

Example

Create file g01.dot
digraph G {
main -> glut;
main -> d4tri;
main -> zpr;
main -> d4tessdraw;
main -> d4tess;
}
Make the graph.
dot -Tpng g01.dot -o g01.png

References

Graphviz - Graph Visualization Software
The DOT Language

Doxygen

doxygen -g   to generate Doxyfile. Edit this configuration file. To generate the documentation run doxygen Doxyfile.

    EXTRACT_ALL = YES
        Extract documentation even from those elements you haven't yet commented.
    INLINE_SOURCE = YES
        Extract the relevant parts of the source and associate them with your description.
    HAVE_DOT = YES
        Use Graphviz for class and collaboration diagrammes.
    CALL_GRAPH = YES
        Generate a dependency graph for functions and methods.
    GENERATE_LATEX = NO
        Skip generating LaTeX sources for PDF. 

An example of documentation in the file

/**
 * \file tutorial.h
 * \author Chris Olsen
 * \date 2-26-04
 */
#ifndef __TUTORIAL__
#define __TUTORIAL__



/**
 * An example class for the Doxygen tutorial
 */
class Tutorial
{
public:
  /// The Constructor
  Tutorial();

  /** The Destructor */
  virtual ~Tutorial();

  /**
     Takes three inputs and does something

     \param a A float paramater
     \param b An int paramater
     \param c A char paramater
     \return Returns an integer
  */
  int Method1(float a, int b, char c);

  int var;  ///< This was commented after declaration
};
 
#endif