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package de.lmu.ifi.dbs.elki.data.projection;
/*
This file is part of ELKI:
Environment for Developing KDD-Applications Supported by Index-Structures
Copyright (C) 2014
Ludwig-Maximilians-Universität München
Lehr- und Forschungseinheit für Datenbanksysteme
ELKI Development Team
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
import de.lmu.ifi.dbs.elki.data.NumberVector;
import de.lmu.ifi.dbs.elki.data.type.SimpleTypeInformation;
import de.lmu.ifi.dbs.elki.data.type.TypeUtil;
import de.lmu.ifi.dbs.elki.data.type.VectorFieldTypeInformation;
import de.lmu.ifi.dbs.elki.math.geodesy.EarthModel;
import de.lmu.ifi.dbs.elki.math.geodesy.SphericalVincentyEarthModel;
import de.lmu.ifi.dbs.elki.utilities.optionhandling.AbstractParameterizer;
import de.lmu.ifi.dbs.elki.utilities.optionhandling.parameterization.Parameterization;
import de.lmu.ifi.dbs.elki.utilities.optionhandling.parameters.ObjectParameter;
/**
* Project (Longitude, Latitude) vectors to (X, Y, Z), from spherical
* coordinates to ECEF (earth-centered earth-fixed).
*
* @author Erich Schubert
*
* @apiviz.composedOf EarthModel
* @apiviz.uses NumberVector
*
* @param <V> Vector type
*/
public class LngLatToECEFProjection<V extends NumberVector> implements Projection<V, V> {
/**
* Earth model to use
*/
EarthModel model;
/**
* Vector factory to use.
*/
private NumberVector.Factory<V> factory;
/**
* Constructor.
*
* @param model Earth model to use.
*/
public LngLatToECEFProjection(EarthModel model) {
super();
this.model = model;
}
@SuppressWarnings("unchecked")
@Override
public void initialize(SimpleTypeInformation<V> in) {
final VectorFieldTypeInformation<V> vin = (VectorFieldTypeInformation<V>) in;
factory = (NumberVector.Factory<V>) vin.getFactory();
}
@Override
public V project(V data) {
return factory.newNumberVector(model.latLngDegToECEF(data.doubleValue(1), data.doubleValue(0)));
}
@Override
public SimpleTypeInformation<? super V> getInputDataTypeInformation() {
return TypeUtil.NUMBER_VECTOR_FIELD_2D;
}
@Override
public SimpleTypeInformation<V> getOutputDataTypeInformation() {
return new VectorFieldTypeInformation<>(factory, 3, 3, factory.getDefaultSerializer());
}
/**
* Parameterization class.
*
* @apiviz.exclude
*
* @author Erich Schubert
*/
public static class Parameterizer extends AbstractParameterizer {
/**
* Earth model to use.
*/
EarthModel model;
@Override
protected void makeOptions(Parameterization config) {
super.makeOptions(config);
ObjectParameter<EarthModel> modelP = new ObjectParameter<>(EarthModel.MODEL_ID, EarthModel.class, SphericalVincentyEarthModel.class);
if(config.grab(modelP)) {
model = modelP.instantiateClass(config);
}
}
@Override
protected LngLatToECEFProjection<NumberVector> makeInstance() {
return new LngLatToECEFProjection<>(model);
}
}
}
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