package username.tests;

import java.io.PrintWriter;

import username.functions.ComposeUIF;
import username.functions.ConstantUIF;
import username.functions.IdentityUIF;
import username.functions.LogUIF;
import username.functions.ProductUIF;
import username.functions.QuotientUIF;
import username.functions.UnaryIntegerFunction;

import username.analysis.Graph;

/**
 * Whee!  Let's graph some functions.
 *
 * @author Samuel A. Rebelsky
 * @version 1.0 of April 2006.
 */
public class GraphFuns
{
  public static void test(PrintWriter pen, char ch, Graph g, UnaryIntegerFunction f)
  {
    g.setPlotChar(ch);
    pen.println(ch + " " + f);
    for (int n = 1; n < 60; n++) {
      g.plot(n, f.apply(n));
    }
  } // test(Graph, UnaryIntegerFunction)

  public static void main(String[] args)
    throws Exception
  {
    PrintWriter pen = new PrintWriter(System.out, true);

    Graph g = new Graph(70,25);

    test(pen, '*', g, 
         new LogUIF(2));
    test(pen, '+', g,
         new QuotientUIF(new ProductUIF(new LogUIF(2), new IdentityUIF()),
                         new ConstantUIF(25)));
    test(pen, '@', g,
         new QuotientUIF(new ProductUIF(new IdentityUIF(), 
                                        new IdentityUIF()),
                         new ConstantUIF(100)));
    test(pen, '.', g,
         new ComposeUIF(new ProductUIF(new IdentityUIF(), new IdentityUIF()),
                        new LogUIF(2)));
                                         

    pen.println(g);
  } // main(String[])
    
} // class GraphFuns