/**
* set lat and lon
*
* @param strLatNS "N" or "S"
* @param strLatDeg Degrees of Latitude
* @param strLatMin Minutes of Latitude
* @param strLatSec Seconds of Latitude
* @param strLonEW "E" or "W"
* @param strLonDeg Degrees of Longitude
* @param strLonMin Minutes of Longitude
* @param strLonSec Seconds of Longitude
* @param format Format: DD, DMM, DMS
*/
public void set(
String strLatNS,
String strLatDeg,
String strLatMin,
String strLatSec,
String strLonEW,
String strLonDeg,
String strLonMin,
String strLonSec,
int format) {
switch (format) {
case DD:
this.latDec = Common.parseDouble(strLatDeg);
this.lonDec = Common.parseDouble(strLonDeg);
break;
case DMM:
this.latDec =
Math.abs(Common.parseDouble(strLatDeg))
+ Math.abs((Common.parseDouble(strLatMin) / 60));
this.lonDec =
Math.abs(Common.parseDouble(strLonDeg))
+ Math.abs((Common.parseDouble(strLonMin) / 60));
break;
case DMS:
this.latDec =
Math.abs(Common.parseDouble(strLatDeg))
+ Math.abs((Common.parseDouble(strLatMin) / 60))
+ Math.abs((Common.parseDouble(strLatSec) / 3600));
this.lonDec =
Math.abs(Common.parseDouble(strLonDeg))
+ Math.abs((Common.parseDouble(strLonMin) / 60))
+ Math.abs((Common.parseDouble(strLonSec) / 3600));
break;
default:
this.latDec = 91;
this.lonDec = 361;
}
// makeValid();
// To avoid changing sign twice if we have something like W -34.2345
if (strLatNS.trim().equals("S") && this.latDec > 0) this.latDec *= -1;
if (strLonEW.trim().equals("W") && this.lonDec > 0) this.lonDec *= -1;
this.utmValid = false;
}
/**
* shift the point
*
* @param meters positiv to north (east), negativ to south (west)
* @param direction 0 north-south, 1 east-west
*/
public void shift(double meters, int direction) {
double meters2deglon = 1 / (1000 * (new CWPoint(0, 0)).getDistance(new CWPoint(1, 0)));
switch (direction) { // TODO use ellipsoid distance calculations for better accuracy
case 0:
latDec += meters * meters2deglon;
return;
case 1:
lonDec += meters * (meters2deglon / Math.cos(latDec / 180 * Math.PI));
return;
}
}
/**
* Returns the degrees or minutes or seconds (depending on parameter what) formatted as a string
* To determine the degrees, we need to calculate the minutes (and seconds) just in case rounding
* errors propagate. Equally we need to know the seconds to determine the minutes value.
*
* @param deg The coordinate in degrees
* @param what 0=deg, 1=min, 2=sec
* @param format DD,CW,DMM,DMS
* @return
*/
private String getDMS(double deg, int what, int format) {
deg = Math.abs(deg);
long iDeg = (int) deg;
double tmpMin, tmpSec;
tmpMin = (deg - iDeg) * 60.0;
switch (format) {
case DD:
return "";
case CW:
case DMM:
// Need to check if minutes would round up to 60
if (java.lang.Math.round(tmpMin * 1000.0) == 60000) {
tmpMin = 0;
iDeg++;
}
switch (what) {
case 0:
return MyLocale.formatLong(iDeg, "00");
case 1:
return MyLocale.formatDouble(tmpMin, "00.000").replace(',', '.');
case 2:
return "";
}
case DMS:
tmpSec = (tmpMin - (int) tmpMin) * 60.0;
tmpMin = (int) tmpMin;
// Check if seconds round up to 60
if (java.lang.Math.round(tmpSec * 10.0) == 600) {
tmpSec = 0;
tmpMin = tmpMin + 1.0;
}
// Check if minutes round up to 60
if (java.lang.Math.round(tmpMin) == 60) {
tmpMin = 0;
iDeg++;
}
switch (what) {
case 0:
return MyLocale.formatLong(iDeg, "00");
case 1:
return MyLocale.formatDouble(tmpMin, "00");
case 2:
return MyLocale.formatDouble(tmpSec, "00.0").replace(',', '.');
}
}
return ""; // Dummy to keep compiler happy
}
/**
* Method to calculate the distance to a waypoint
*
* @param dest lat, lon
* @return distance to waypoint in Rad
*/
public double getDistanceRad(double latDecD, double lonDecD) {
double phi1 = this.latDec * PiOver180;
double lambda0 = this.lonDec * PiOver180;
double phi = latDecD * PiOver180;
double lambda = lonDecD * PiOver180;
double pdiff = Math.sin(((phi - phi1) / 2.0));
double ldiff = Math.sin((lambda - lambda0) / 2.0);
double rval = Math.sqrt((pdiff * pdiff) + Math.cos(phi1) * Math.cos(phi) * (ldiff * ldiff));
return 2.0 * Math.asin(rval);
}
