package class6_2_LinearObserver_start;

import java.util.Random;

/**
 * Author: Josiah Yoder et al.
 * Class: SExxxx-xx
 * Date: 1/7/14 7:45 AM
 * Lesson: Week x, Day x
 */
public class Example {

    public static void main(String[] ignored) {
        Example ex = new Example();
        ex.run();
    }

    public void run() {
        Random gen = new Random();
        double positionMeters = 0;
        double oldPosition = 0;
        double smoothedPosition = 0;

        for(int i= 0; i<10; i++) {
            positionMeters += gen.nextDouble();

            // Compute position
            System.out.println("Now we are at: "+positionMeters+" m");

            // Compute velocity
            double  velocity = positionMeters - oldPosition;
            oldPosition = positionMeters;
            System.out.println("Velocity: "+velocity+" m/s");

            // Compute average position
            smoothedPosition = 0.9 * smoothedPosition + 0.1 * positionMeters;
            System.out.println("Smoothed position: "+smoothedPosition);

            // Compute "named" location
            String namedLocation;
            if(Math.abs(positionMeters) < 1) {
                namedLocation = "Home";
            } else if(Math.abs(positionMeters-10)<1) {
                namedLocation = "Work";
            } else {
                namedLocation = "";
            }
            if(namedLocation.length() > 0) {
                System.out.println("We are at "+namedLocation);
            }

            // Separator between steps...
            System.out.println();
        }
    }
}