package net.sourceforge.jswarm_pso;/** * Base Fitness Function * @author Pablo Cingolani <pcingola@sinectis.com> */public abstract class FitnessFunction {	/** Should this funtion be maximized or minimized */	boolean maximize;	//-------------------------------------------------------------------------	// Constructors	//-------------------------------------------------------------------------	/** Default constructor */	public FitnessFunction() {		this.maximize = true; // Default: Maximize	}	/**	 * Constructor 	 * @param maximize : Should we try to maximize or minimize this funtion?	 */	public FitnessFunction(boolean maximize) {		this.maximize = maximize;	}	//-------------------------------------------------------------------------	// Methods	//-------------------------------------------------------------------------		/**	 * Evaluates a particles at a given position	 * NOTE: You should write your own method!	 * 	 * @param position : Particle's position	 * @return Fitness function for a particle	 */	public abstract double evaluate(double position[]);	/**	 * Evaluates a particles 	 * @param particle : Particle to evaluate	 * @return Fitness function for a particle	 */	public double evaluate(Particle particle) {		double position[] = particle.getPosition();		double fit = evaluate(position);		particle.setFitness(fit,maximize);		return fit;	}	/** Are we maximizing this fitness funtion? */	public boolean isMaximize() {		return maximize;	}	public void setMaximize(boolean maximize) {		this.maximize = maximize;	}}