/**
* subtract the two points to produce a vector
*
* @param other the offset to add to this point
* @return a new point
*/
public final WorldDistance rangeFrom(final WorldLocation other, final WorldDistance res) {
// check we have our model
if (_model == null) {
_model = new MWC.Algorithms.EarthModels.FlatEarth();
}
// ok, how far apart are they?
final WorldVector sep = _model.subtract(other, this);
// update the results object
res.setValues(sep.getRange(), WorldDistance.DEGS);
// and return it.
return res;
}
