PiTech/HistoryData.java at master · louiswins/PiTech · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
/**
 * A class to save the history for a certain time with constant speed and
 * inclination.
 *
 * @version 0.3
 */
public class HistoryData {
	private int speed; // tenths of a mph
	private int incline; // slope %
	private double duration; // seconds


	/**
	 * Creates a HistoryData object with a start time of the time of the
	 * call.
	 *
	 * @param sp    speed in tenths of a mile per hour
	 * @param inc   inclination in percent
	 */
	public HistoryData(int sp, int inc) {
		speed = sp;
		incline = inc;
		duration = 0.0;
	}


	public void update(double timespan) {
		duration += timespan;
	}


	/**
	 * Returns the total distance run during this object's lifetime.
	 *
	 * @return distance run in miles
	 */
	public double getDistance() {
		// miles = miles/hr * s / (s/hr)
		return (double)speed/10.0 * duration / 3600.0;
	}

	/**
	 * Returns the lifespan of the object.
	 *
	 * @return time the object was alive in seconds
	 */
	public double getTime() { return duration; }

	/**
	 * Returns the speed.
	 *
	 * @return speed running in tenths of a mile per hour
	 */
	public int getSpeed() { return speed; }

	/**
	 * Returns the incline of the treadmill.
	 *
	 * @return inclination in percent
	 */
	public int getIncline() { return incline; }

	/**
	 * Returns the number of calories burnt during the lifetime of the
	 * object. Formula is from
	 * <a href="http://www.runnersworld.com/article/0,7120,s6-242-304-311-8402-0,00.html">Runner's World</a>.
	 *
	 * @param age    age of user in years
	 * @param weight weight in lbs
	 * @return       calories burnt
	 */
	// 0.75 * weight * #miles
	public double getCalories(int age, int weight) {
		return (0.75 * weight * getDistance());
	}

	/**
	 * Returns a representation of the history for this time period.
	 *
	 * @param age    age of user in years
	 * @param weight weight in lbs
	 * @return       formatted value
	 */
	public String toString(int age, int weight) {
		return String.format("%5.3f mi", getDistance()) + "\t" +
		       String.format("%02d:%02d:%02d", (int)(getTime() / 3600), (int)(getTime() / 60) % 60,
				       (int)(getTime()) % 60) + "\t" +
		       String.format("%5.3f mph", (double)getSpeed() / 10.0) + "\t" +
		       getIncline() + " %\t" +
		       (int)getCalories(age, weight) + " Cal";
	}
}