@Override
public void onMapChanged() {
List<TrackPoint> trackpoints = track.getPoints();
synchronized (trackpoints) {
for (TrackPoint tp : trackpoints) {
tp.dirty = true;
}
}
}
@Override
protected void onDraw(final Canvas c, final MapView mapView, int centerX, int centerY) {
if (!track.show) return;
Androzic application = (Androzic) context.getApplication();
final int[] cxy = mapView.mapCenterXY;
int w2 = mapView.getWidth() / 2;
int h2 = mapView.getHeight() / 2;
int left = cxy[0] - w2;
int right = cxy[0] + w2;
int top = cxy[1] - h2;
int bottom = cxy[1] + h2;
final Path path = new Path();
boolean first = true;
boolean skipped = false;
int lastX = 0, lastY = 0;
List<TrackPoint> trackpoints = track.getPoints();
synchronized (trackpoints) {
for (TrackPoint tp : trackpoints) {
int[] xy = new int[2];
if (tp.dirty) {
xy = application.getXYbyLatLon(tp.latitude, tp.longitude);
tp.x = xy[0];
tp.y = xy[1];
tp.dirty = false;
} else {
xy[0] = tp.x;
xy[1] = tp.y;
}
if (first) {
path.setLastPoint(xy[0] - cxy[0], xy[1] - cxy[1]);
lastX = xy[0];
lastY = xy[1];
first = false;
continue;
}
if ((lastX == xy[0] && lastY == xy[1])
|| lastX < left && cxy[0] < left
|| lastX > right && cxy[0] > right
|| lastY < top && cxy[1] < top
|| lastY > bottom && cxy[1] > bottom) {
lastX = xy[0];
lastY = xy[1];
skipped = true;
continue;
}
if (skipped) {
path.moveTo(lastX - cxy[0], lastY - cxy[1]);
skipped = false;
}
if (tp.continous) path.lineTo(xy[0] - cxy[0], xy[1] - cxy[1]);
else path.moveTo(xy[0] - cxy[0], xy[1] - cxy[1]);
lastX = xy[0];
lastY = xy[1];
}
}
c.drawPath(path, paint);
}