/**
* Match a list of photos to a gpx track with a given offset. All images need a exifTime attribute
* and the List must be sorted according to these times.
*
* @param images images to match
* @param selectedGpx selected GPX data
* @param offset offset
* @return number of matched points
*/
static int matchGpxTrack(List<ImageEntry> images, GpxData selectedGpx, long offset) {
int ret = 0;
for (GpxTrack trk : selectedGpx.tracks) {
for (GpxTrackSegment segment : trk.getSegments()) {
long prevWpTime = 0;
WayPoint prevWp = null;
for (WayPoint curWp : segment.getWayPoints()) {
try {
final Date parsedTime = curWp.setTimeFromAttribute();
if (parsedTime != null) {
final long curWpTime = parsedTime.getTime() + offset;
ret += matchPoints(images, prevWp, prevWpTime, curWp, curWpTime, offset);
prevWp = curWp;
prevWpTime = curWpTime;
continue;
}
} catch (Exception e) {
Main.warn(e);
}
prevWp = null;
prevWpTime = 0;
}
}
}
return ret;
}
@Override
public void actionPerformed(ActionEvent arg0) {
GpxDataWrapper gpxW = selectedGPX(true);
if (gpxW == null) return;
GpxData gpx = gpxW.data;
List<ImageEntry> imgs = getSortedImgList();
// no images found, exit
if (imgs.isEmpty()) {
JOptionPane.showMessageDialog(
Main.parent,
tr("The selected photos do not contain time information."),
tr("Photos do not contain time information"),
JOptionPane.WARNING_MESSAGE);
return;
}
// Init variables
long firstExifDate = imgs.get(0).getExifTime().getTime() / 1000;
long firstGPXDate = -1;
// Finds first GPX point
outer:
for (GpxTrack trk : gpx.tracks) {
for (GpxTrackSegment segment : trk.getSegments()) {
for (WayPoint curWp : segment.getWayPoints()) {
try {
final Date parsedTime = curWp.setTimeFromAttribute();
if (parsedTime != null) {
firstGPXDate = parsedTime.getTime();
break outer;
}
} catch (Exception e) {
Main.warn(e);
}
}
}
}
// No GPX timestamps found, exit
if (firstGPXDate < 0) {
JOptionPane.showMessageDialog(
Main.parent,
tr("The selected GPX track does not contain timestamps. Please select another one."),
tr("GPX Track has no time information"),
JOptionPane.WARNING_MESSAGE);
return;
}
// seconds
long diff = firstExifDate - firstGPXDate;
double diffInH = (double) diff / (60 * 60); // hours
// Find day difference
int dayOffset = (int) Math.round(diffInH / 24); // days
double tz = diff - dayOffset * 24 * 60 * 60L; // seconds
// In hours, rounded to two decimal places
tz = (double) Math.round(tz * 100 / (60 * 60)) / 100;
// Due to imprecise clocks we might get a "+3:28" timezone, which should obviously be 3:30
// with
// -2 minutes offset. This determines the real timezone and finds offset.
timezone = (double) Math.round(tz * 2) / 2; // hours, rounded to one decimal place
delta = Math.round(diff - timezone * 60 * 60); // seconds
tfTimezone.getDocument().removeDocumentListener(statusBarUpdater);
tfOffset.getDocument().removeDocumentListener(statusBarUpdater);
tfTimezone.setText(formatTimezone(timezone));
tfOffset.setText(Long.toString(delta));
tfOffset.requestFocus();
tfTimezone.getDocument().addDocumentListener(statusBarUpdater);
tfOffset.getDocument().addDocumentListener(statusBarUpdater);
statusBarUpdater.updateStatusBar();
yLayer.updateBufferAndRepaint();
}
