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
|
package tim.prune.gui.profile;
import tim.prune.I18nManager;
import tim.prune.config.Config;
import tim.prune.data.DataPoint;
import tim.prune.data.Distance;
import tim.prune.data.Track;
import tim.prune.data.Distance.Units;
/**
* Class to provide a source of speed data for the profile chart
*/
public class SpeedData extends ProfileData
{
/** Flag for metric units */
private boolean _metric = true;
/**
* Constructor
* @param inTrack track object
*/
public SpeedData(Track inTrack) {
super(inTrack);
}
/**
* Get the data and populate the instance arrays
*/
public void init()
{
initArrays();
_metric = Config.getConfigBoolean(Config.KEY_METRIC_UNITS);
_hasData = false;
_minValue = _maxValue = 0.0;
if (_track != null) {
DataPoint prevPrevPoint = null, prevPoint = null, point = null;
for (int i=0; i<_track.getNumPoints(); i++)
{
point = _track.getPoint(i);
if (prevPrevPoint != null && prevPrevPoint.hasTimestamp()
&& prevPoint != null && prevPoint.hasTimestamp()
&& point != null && point.hasTimestamp())
{
// All three points have timestamps
double seconds = point.getTimestamp().getSecondsSince(prevPrevPoint.getTimestamp());
if (seconds > 0)
{
double distInRads = DataPoint.calculateRadiansBetween(prevPrevPoint, prevPoint)
+ DataPoint.calculateRadiansBetween(prevPoint, point);
double dist = Distance.convertRadiansToDistance(distInRads, _metric?Units.KILOMETRES:Units.MILES);
// Store the value and maintain max and min values
double value = dist / seconds * 60.0 * 60.0;
_pointValues[i-1] = value;
if (value < _minValue || _minValue == 0.0) {_minValue = value;}
if (value > _maxValue) {_maxValue = value;}
_hasData = true;
_pointHasData[i-1] = true;
}
}
// Exchange points
prevPrevPoint = prevPoint;
prevPoint = point;
}
}
}
/**
* @return text description including units
*/
public String getLabel()
{
return I18nManager.getText("fieldname.speed") + " ("
+ I18nManager.getText(_metric?"units.kmh":"units.mph") + ")";
}
/**
* @return key for message when no speeds present
*/
public String getNoDataKey() {
return "display.notimestamps";
}
}
|
