public abstract class SpeedCalculator
{
/**
- * Calculate the speed value of the track at the specified index
+ * Calculate the horizontal speed value of the track at the specified index
* @param inTrack track object
* @param inIndex index of point to calculate speed for
* @param inValue object in which to place result of calculation
*/
public static void calculateSpeed(Track inTrack, int inIndex, SpeedValue inValue)
{
- if (inTrack == null || inIndex < 0 || inValue == null) {
+ inValue.setInvalid();
+ if (inTrack == null || inIndex < 0 || inValue == null)
+ {
System.err.println("Cannot calculate speed for index " + inIndex);
return;
}
- inValue.setInvalid();
DataPoint point = inTrack.getPoint(inIndex);
if (point == null) {return;}
double speedValue = 0.0;
// First, see if point has a speed value already
- // FIXME: How do we know what units this speed is in? m/s or mph or km/h or what?
- String speedStr = point.getFieldValue(Field.SPEED);
- try {
- speedValue = Double.parseDouble(speedStr);
+ if (point.hasHSpeed()) {
+ speedValue = point.getHSpeed().getValue(Config.getUnitSet().getSpeedUnit());
pointHasSpeed = true;
}
- catch (Exception e) {} // ignore, leave pointHasSpeed false
// otherwise, see if we can calculate it from the timestamps
if (!pointHasSpeed && point.hasTimestamp() && !point.isWaypoint())
double speedValue = 0.0;
// First, see if point has a speed value already
- if (point != null)
+ if (point != null && point.hasVSpeed())
{
- // FIXME: Can we assume m/s or ft/s?
- String speedStr = point.getFieldValue(Field.VERTICAL_SPEED);
- try {
- speedValue = Double.parseDouble(speedStr);
- pointHasSpeed = true;
- }
- catch (Exception e) {} // ignore, leave pointHasSpeed false
+ speedValue = point.getVSpeed().getValue(Config.getUnitSet().getVerticalSpeedUnit());
+ pointHasSpeed = true;
}
// otherwise, see if we can calculate it from the heights and timestamps
if (!pointHasSpeed