/* Copyright 1996 Matthew Freedman and University of Washington
              mattf@cac.washington.edu

   This program may be freely used, modified, or redistributed for
   any non-commercial purpose as long as credit is given.

   This file contains the ColorRandomizer class for picking new colors.
 */

import java.awt.*;
import java.util.*;

/* Tiny class for generating new random colors. Public methods are:
     void setSeed(int):  Put a new seed in the random number generator.

     Color getOne(boolean white_bg): Get a new color. Pass in a flag
             to indicated whether the color is going to be used on
	     a white background.
  */
class ColorRandomizer {
  private Random randy = new Random();

  public void setSeed(int seed) {
    randy.setSeed(randy.nextLong() + (long) seed);
  }

  /* Generate a new random color. Always keep the brightness 
     above 75%. If the background is white, keep the color
     completely saturated. */
  public Color getOne(boolean white_bg) {
    return(Color.getHSBColor(randy.nextFloat(),
			     white_bg ? 1.0f :  randy.nextFloat(), 
			     (float)(randy.nextFloat()/4.0 + 0.75)));
  }
}