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package cgeo.geocaching.speech;
import cgeo.geocaching.R;
import cgeo.geocaching.Settings;
import cgeo.geocaching.cgeoapplication;
import cgeo.geocaching.geopoint.Geopoint;
import cgeo.geocaching.geopoint.IConversion;
import cgeo.geocaching.utils.AngleUtils;
import java.util.Locale;
/**
* Creates the output to be read by TTS.
*
*/
public class TextFactory {
public static String getText(Geopoint position, Geopoint target, float direction) {
if (position == null || target == null) {
return null;
}
return getDirection(position, target, direction) + ". " + getDistance(position, target);
}
private static String getDistance(Geopoint position, Geopoint target) {
float kilometers = position.distanceTo(target);
if (Settings.isUseMetricUnits()) {
if (kilometers >= 5.0) {
return getString(R.string.tts_kilometers, String.valueOf(Math.round(kilometers)));
}
if (kilometers >= 1.0) {
String digits = String.format(Locale.getDefault(), "%.1f", kilometers);
return getString(R.string.tts_kilometers, digits);
}
int meters = (int) (kilometers * 1000.0);
if (meters > 50) {
return getString(R.string.tts_meters, String.valueOf(Math.round(meters / 10.0) * 10));
}
return getString(R.string.tts_meters, String.valueOf(meters));
}
float miles = kilometers / IConversion.MILES_TO_KILOMETER;
if (miles >= 3.0) {
return getString(R.string.tts_miles, String.valueOf(Math.round(miles)));
}
if (miles >= 0.2) { // approx 1000 ft
String digits = String.format(Locale.getDefault(), "%.1f", miles);
return getString(R.string.tts_miles, digits);
}
int feet = (int) (kilometers * 1000.0 * IConversion.METERS_TO_FEET);
if (feet > 300) {
return getString(R.string.tts_feet, String.valueOf(Math.round(feet / 10.0) * 10));
}
return getString(R.string.tts_feet, String.valueOf(feet));
}
private static String getString(int resourceId, Object... formatArgs) {
return cgeoapplication.getInstance().getString(resourceId, formatArgs);
}
private static String getDirection(Geopoint position, Geopoint target, float direction) {
final int bearing = (int) position.bearingTo(target);
int degrees = (int) AngleUtils.normalize(bearing - direction);
int hours = (degrees + 15) / 30;
if (hours == 0) {
hours = 12;
}
return getString(R.string.tts_oclock, String.valueOf(hours));
}
}
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