org.geolatte.geom.AbstractPositionSequenceBuilder Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of geolatte-geom Show documentation

This geoLatte-geom library offers a geometry model that conforms to the OGC Simple Features for SQL specification.

The newest version!

/*
 * This file is part of the GeoLatte project.
 *
 *     GeoLatte is free software: you can redistribute it and/or modify
 *     it under the terms of the GNU Lesser General Public License as published by
 *     the Free Software Foundation, either version 3 of the License, or
 *     (at your option) any later version.
 *
 *     GeoLatte 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 Lesser General Public License for more details.
 *
 *     You should have received a copy of the GNU Lesser General Public License
 *     along with GeoLatte.  If not, see .
 *
 * Copyright (C) 2010 - 2011 and Ownership of code is shared by:
 * Qmino bvba - Romeinsestraat 18 - 3001 Heverlee  (http://www.qmino.com)
 * Geovise bvba - Generaal Eisenhowerlei 9 - 2140 Antwerpen (http://www.geovise.com)
 */

package org.geolatte.geom;

import java.util.Collection;

/**
 * @author Karel Maesen, Geovise BVBA
 *         creation-date: 4/25/11
 */
abstract class AbstractPositionSequenceBuilder implements PositionSequenceBuilder
 {

    protected final PositionFactory
 factory;
    protected final double[] coords;
    private int numAdded = 0;

    public AbstractPositionSequenceBuilder(PositionFactory
 factory) {
        if (factory == null) throw new IllegalArgumentException("Require a non-null Coordinate reference system.");
        this.factory = factory;
        this.coords = new double[factory.getCoordinateDimension()];
    }

    @Override
    public PositionSequenceBuilder
 add(double... coordinates) {
        if (coordinates.length < this.factory.getCoordinateDimension())
            throw new IllegalArgumentException(String.format("Parameter must be array of length %d", factory.getCoordinateDimension()));
        for (int i = 0; i < factory.getCoordinateDimension(); i++) {
            addCoordinate(coordinates[i]);
        }
        numAdded++;
        return this;
    }

    @Override
    public PositionSequenceBuilder add(P pos) {
        pos.toArray(coords);
        for (double coord : coords) {
            addCoordinate(coord);
        }
        numAdded++;
        return this;
    }

    @Override
    public int getNumAdded() {
        return numAdded;
    }

    protected abstract void addCoordinate(double val);
}