ingo@1115: /*
ingo@1115:  * Copyright (c) 2010 by Intevation GmbH
ingo@1115:  *
ingo@1115:  * This program is free software under the LGPL (>=v2.1)
ingo@1115:  * Read the file LGPL.txt coming with the software for details
ingo@1115:  * or visit http://www.gnu.org/licenses/ if it does not exist.
ingo@1115:  */
ingo@1115: 
sascha@422: package de.intevation.gnv.jfreechart;
sascha@422: 
sascha@779: import java.util.ArrayList;
sascha@779: import java.util.Collection;
sascha@422: import java.util.List;
sascha@422: 
sascha@422: import org.jfree.data.Range;
sascha@779: 
sascha@422: import org.jfree.data.general.AbstractSeriesDataset;
sascha@422: 
sascha@422: /**
ingo@795:  * An implementation of {@link org.jfree.data.xy.XYDataset} to create 2D charts.
ingo@795:  * This dataset contains several <code>PolygonSeries</code> and is used by
ingo@795:  * <code>PolygonRenderer</code> to draw its items into a 2D chart.
sascha@803:  *
sascha@780:  * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
sascha@422:  */
sascha@422: public class PolygonDataset
sascha@422: extends      AbstractSeriesDataset
sascha@422: {
ingo@795:     /**
ingo@795:      * PolygonSeries included in this Dataset
ingo@795:      */
sascha@422:     private List data;
sascha@422: 
sascha@422: 
ingo@795:     /**
ingo@795:      * Constructor.
ingo@795:      */
sascha@422:     public PolygonDataset() {
sascha@436:         data = new ArrayList();
sascha@422:     }
sascha@422: 
ingo@795:     /**
ingo@795:      * Constructs a new PolygonDataset containing multiple PolygonSeries.
ingo@795:      *
ingo@795:      * @param series A collection containing some PolygonSeries.
ingo@795:      */
sascha@436:     public PolygonDataset(Collection series) {
sascha@436:         data = new ArrayList(series);
sascha@436:     }
sascha@422: 
ingo@795:     /**
ingo@795:      * Constructs a PolygonDataset with a single PolygonSeries.
sascha@803:      *
ingo@795:      * @param series A PolygonSeries.
ingo@795:      */
sascha@422:     public PolygonDataset(PolygonSeries series) {
sascha@436:         this();
sascha@422: 
sascha@422:         if (series != null) {
sascha@422:             data.add(series);
sascha@422:         }
sascha@422:     }
sascha@422: 
sascha@422: 
ingo@795:     /**
ingo@795:      *
ingo@795:      * @param series
ingo@795:      */
sascha@422:     public void addSeries(PolygonSeries series) {
sascha@422:         if (series == null)
sascha@422:             throw new IllegalArgumentException("Null 'series' argument.");
sascha@422: 
sascha@422:         data.add(series);
sascha@422:     }
sascha@422: 
ingo@795:     /**
ingo@795:      *
ingo@795:      * @param series
ingo@795:      */
sascha@447:     public void addAllSeries(Collection<PolygonSeries> series) {
sascha@447:         data.addAll(series);
sascha@447:     }
sascha@422: 
ingo@795:     /**
ingo@795:      * Retrieves the x-axis range of all PolygonSeries in this dataset.
ingo@795:      *
ingo@795:      * @return range of the x-axis.
ingo@795:      */
sascha@422:     public Range getDomainBounds() {
sascha@422:         double lower       = Double.POSITIVE_INFINITY;
sascha@422:         double upper       = Double.NEGATIVE_INFINITY;
sascha@422:         int    seriesCount = getSeriesCount();
sascha@422: 
sascha@422:         for (int s = 0; s < seriesCount; s++) {
sascha@422:             PolygonSeries series = getSeries(s);
sascha@422: 
sascha@422:             Range domainRange = series.getDomainBounds();
sascha@422:             double minX = domainRange.getLowerBound();
sascha@422:             if (!Double.isNaN(minX)) {
sascha@422:                 lower = Math.min(lower, minX);
sascha@422:             }
sascha@422: 
sascha@422:             double maxX = domainRange.getUpperBound();
sascha@422:             if (!Double.isNaN(maxX)) {
sascha@422:                 upper = Math.max(upper, maxX);
sascha@422:             }
sascha@422:         }
sascha@422: 
sascha@422:         return new Range(lower, upper);
sascha@422:     }
sascha@422: 
sascha@422: 
ingo@795:     /**
ingo@795:      * Retrieves the y-axis range of all PolygonSeries in this dataset.
ingo@795:      *
ingo@795:      * @return the y-axis range.
ingo@795:      */
sascha@422:     public Range getRangeBounds() {
sascha@422:         double lower       = Double.POSITIVE_INFINITY;
sascha@422:         double upper       = Double.NEGATIVE_INFINITY;
sascha@422:         int    seriesCount = getSeriesCount();
sascha@422: 
sascha@422:         for (int i = 0; i < seriesCount; i++) {
sascha@422:             PolygonSeries series = getSeries(i);
sascha@422: 
sascha@422:             Range range = series.getRangeBounds();
sascha@422:             double minX = range.getLowerBound();
sascha@422:             if (!Double.isNaN(minX)) {
sascha@422:                 lower = Math.min(lower, minX);
sascha@422:             }
sascha@422: 
sascha@422:             double maxX = range.getUpperBound();
sascha@422:             if (!Double.isNaN(maxX)) {
sascha@422:                 upper = Math.max(upper, maxX);
sascha@422:             }
sascha@422:         }
sascha@422: 
sascha@422:         return new Range(lower, upper);
sascha@422:     }
sascha@422: 
sascha@422: 
ingo@795:     /**
ingo@795:      * Returns the number of series in this dataset.
ingo@795:      *
ingo@795:      * @return the number of series in this dataset.
ingo@795:      */
sascha@422:     public int getSeriesCount() {
sascha@422:         return data.size();
sascha@422:     }
sascha@422: 
sascha@422: 
ingo@795:     /**
ingo@795:      * Returns the key for a series.
ingo@795:      *
ingo@795:      * @param index Index of a specific series.
ingo@795:      * @return the series key of the series with the given index.
ingo@795:      */
ingo@795:     public Comparable getSeriesKey(int index) {
ingo@795:         return ((PolygonSeries)data.get(index)).getKey();
sascha@422:     }
sascha@422: 
sascha@422: 
ingo@795:     /**
ingo@795:      *
ingo@795:      * @param idx Index.
ingo@795:      * @return the series with the given index.
ingo@795:      */
sascha@422:     public PolygonSeries getSeries(int idx) {
sascha@422:         return (PolygonSeries)data.get(idx);
sascha@422:     }
sascha@422: }
sascha@836: // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 :