private void edt_LatLong_TextChanged(object sender, EventArgs e)
{
if (!_Changing)
{
GeoPoint geoPoint = null;
UtmPoint utmPoint = null;
try
{
_Changing = true;
geoPoint = new GeoPoint(edt_LatLong.Text);
geoPoint.Datum = (GeoDatum)cbx_datum.SelectedItem;
GeoPoint lGeoOtherDatum = new GeoPoint(geoPoint);
lGeoOtherDatum.Datum = (GeoDatum)cbx_datum.SelectedItem;
utmPoint = lGeoOtherDatum.CalcUTM();
}
catch
{
// invalid string
geoPoint = null;
utmPoint = null;
}
SetValues(geoPoint, utmPoint, sender);
_Changing = false;
}
}
private UtmPoint GetUtmPoint()
{
if (_UtmPoint == null)
{
GeoPoint geoPointWithOtherDatum = new GeoPoint(Location);
geoPointWithOtherDatum.Datum = Datum;
_UtmPoint = geoPointWithOtherDatum.CalcUTM();
}
return(_UtmPoint);
}
public void TestCalcUTM()
{
// Dresden according to Wikipedia : 13° 44' 29"E 51° 02' 55"N
GeoPoint basePoint = new GeoPoint(51.0 + 02.0 / 60.0 + 55.0 / 3600.0, 13.0 + 44.0 / 60.0 + 29.0 / 3600.0);
UtmPoint utmPoint = basePoint.CalcUTM();
// Expected result: Zone 33 North, Northing 5655984 Easting 411777
UtmPoint expected = new UtmPoint(411777, 5655984, 33, true);
Assert.IsTrue(expected.Equals(utmPoint));
}
public void TestCalcUTM()
{
// Dresden according to Wikipedia : 13° 44' 29"E 51° 02' 55"N
GeoPoint basePoint = new GeoPoint(51.0 + 02.0 / 60.0 + 55.0 / 3600.0, 13.0 + 44.0 / 60.0 + 29.0 / 3600.0);
UtmPoint utmPoint = basePoint.CalcUTM();
// Expected result: Zone 33 North, Northing 5655984 Easting 411777
UtmPoint expected = new UtmPoint(411777, 5655984, 33, true);
Assert.IsTrue(expected.Equals(utmPoint));
}
private Boolean SameZone(UtmPoint point)
{
GeoPoint geoPoint = new GeoPoint(point, Datum);
UtmPoint realUtm = geoPoint.CalcUTM();
Boolean result = (CentralPoint.ZoneNumber == realUtm.ZoneNumber);
return result;
}
private UtmPoint LimitToZone(UtmPoint point)
{
UtmPoint result = new UtmPoint(point);
Int32 minEasting = 0;
Int32 maxEasting = 0;
if ( point.Easting < CentralPoint.Easting )
{
minEasting = point.Easting;
maxEasting = minEasting + GridSize(_Digits);
}
else
{
maxEasting = point.Easting;
minEasting = maxEasting - GridSize(_Digits);
}
Int32 leftZone = 0;
{
UtmPoint tempUtmPoint = new UtmPoint(point);
tempUtmPoint.Easting = minEasting;
GeoPoint tempGeoPoint = new GeoPoint(tempUtmPoint, Datum);
tempUtmPoint = tempGeoPoint.CalcUTM();
leftZone = tempUtmPoint.ZoneNumber;
}
Int32 eastingDiff = maxEasting - minEasting;
while ( eastingDiff > 1 )
{
Int32 tempEasting = minEasting + eastingDiff / 2;
result = new UtmPoint(point);
result.Easting = tempEasting;
GeoPoint tempGeoPoint = new GeoPoint(result, Datum);
UtmPoint empUtmPoint = tempGeoPoint.CalcUTM();
if ( empUtmPoint.ZoneNumber > leftZone )
{
maxEasting = tempEasting;
}
else
{
minEasting = tempEasting;
}
eastingDiff = eastingDiff / 2;
}
return result;
}
private void edt_LatLong_TextChanged(object sender, EventArgs e)
{
if ( !_Changing )
{
GeoPoint geoPoint = null;
UtmPoint utmPoint = null;
try
{
_Changing = true;
geoPoint = new GeoPoint(edt_LatLong.Text);
geoPoint.Datum = (GeoDatum)cbx_datum.SelectedItem;
GeoPoint lGeoOtherDatum = new GeoPoint(geoPoint);
lGeoOtherDatum.Datum = (GeoDatum)cbx_datum.SelectedItem;
utmPoint = lGeoOtherDatum.CalcUTM();
}
catch
{
// invalid string
geoPoint = null;
utmPoint = null;
}
SetValues(geoPoint, utmPoint, sender);
_Changing = false;
}
}
