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.HashMap;
sascha@422: import java.util.Map;
sascha@422: 
sascha@422: import org.jfree.data.Range;
sascha@779: 
sascha@422: import org.jfree.data.general.Series;
sascha@422: 
sascha@422: /**
ingo@795:  * This class represents a series of polygon items.
ingo@795:  *
sascha@780:  * @author <a href="mailto:sascha.teichmann@intevation.de">Sascha Teichmann</a>
sascha@780:  * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
sascha@422:  */
sascha@422: public class PolygonSeries
sascha@422: extends      Series
sascha@422: {
ingo@795:     /**
ingo@795:      * Polygons.
ingo@795:      */
sascha@422:     protected CompactXYItems []  rings;
ingo@795: 
ingo@795:     /**
ingo@795:      * A map containing attribues.
ingo@795:      */
sascha@422:     protected Map                attributes;
sascha@422: 
ingo@795:     /**
ingo@795:      * The unique key of this series.
ingo@795:      */
sascha@436:     private static long uniqueKey;
sascha@436: 
ingo@795:     /**
ingo@795:      *
ingo@795:      * @return a unique key.
ingo@795:      */
sascha@436:     protected synchronized static Long createUniqueKey() {
sascha@436:         return new Long(uniqueKey++);
sascha@436:     }
sascha@436: 
ingo@795:     /**
ingo@795:      * Constructor to create an empty PolygonSeries with a unique key.
ingo@795:      */
sascha@436:     public PolygonSeries() {
sascha@436:         this(createUniqueKey(), null);
sascha@436:     }
sascha@422: 
ingo@795:     /**
ingo@795:      *
ingo@795:      * @param key The key used for  this series.
ingo@795:      * @param rings Polygons.
ingo@795:      */
sascha@422:     public PolygonSeries(Comparable key, CompactXYItems [] rings) {
sascha@422:         this(key, null, rings, new HashMap());
sascha@422:     }
sascha@422: 
ingo@795:     /**
ingo@795:      *
ingo@795:      * @param key The key used for this series.
ingo@795:      * @param description A description of this series.
ingo@795:      * @param rings Polygons.
ingo@795:      */
sascha@422:     public PolygonSeries(
sascha@422:         Comparable       key,
sascha@422:         String           description,
sascha@422:         CompactXYItems[] rings
sascha@422:     ) {
sascha@422:         this(key, description, rings, new HashMap());
sascha@422:     }
sascha@422: 
ingo@795:     /**
ingo@795:      *
ingo@795:      * @param key The key used for this series.
ingo@795:      * @param description A description of this series.
ingo@795:      * @param rings Polygons.
ingo@795:      * @param attributes Some attribues.
ingo@795:      */
sascha@422:     public PolygonSeries(
sascha@422:         Comparable        key,
sascha@422:         String            description,
sascha@422:         CompactXYItems [] rings,
sascha@422:         Map               attributes
sascha@422:     ) {
sascha@422:         super(key, description);
sascha@422:         this.rings      = rings;
sascha@422:         this.attributes = attributes;
sascha@422:     }
sascha@422: 
sascha@422: 
sascha@422:     public void setRings(CompactXYItems [] rings) {
sascha@422:         this.rings = rings;
sascha@422:     }
sascha@422: 
ingo@815: 
sascha@422:     public CompactXYItems [] getRings() {
sascha@422:         return rings;
sascha@422:     }
sascha@422: 
ingo@815: 
sascha@436:     public void addRing(CompactXYItems newRing) {
sascha@436:         if (rings == null) {
sascha@436:             rings = new CompactXYItems [] { newRing };
sascha@436:         }
sascha@436:         else {
sascha@436:             CompactXYItems [] nRings = new CompactXYItems[rings.length + 1];
sascha@436:             System.arraycopy(rings, 0, nRings, 0, rings.length);
sascha@436:             nRings[rings.length] = newRing;
sascha@436:             rings = nRings;
sascha@436:         }
sascha@436:     }
sascha@436: 
ingo@815: 
sascha@422:     public void addRings(CompactXYItems [] newRings) {
sascha@422:         if (newRings == null || newRings.length == 0) {
sascha@422:             return;
sascha@422:         }
sascha@422:         if (rings == null || rings.length == 0) {
sascha@422:             rings = newRings;
sascha@422:         }
sascha@422:         else {
sascha@422:             CompactXYItems [] both =
sascha@422:                 new CompactXYItems[rings.length + newRings.length];
sascha@422:             System.arraycopy(rings, 0, both, 0, rings.length);
sascha@422:             System.arraycopy(newRings, 0, both, rings.length, newRings.length);
sascha@422:             rings = both;
sascha@422:         }
sascha@422:     }
sascha@422: 
ingo@815: 
sascha@422:     public Object getAttribute(Object key) {
sascha@422:         return attributes.get(key);
sascha@422:     }
sascha@422: 
sascha@422: 
sascha@422:     public Object setAttribute(Object key, Object value) {
sascha@422:         return attributes.put(key, value);
sascha@422:     }
sascha@422: 
sascha@422: 
sascha@422:     public int getItemCount() {
sascha@447:         return rings != null ? rings.length : 0;
sascha@422:     }
sascha@422: 
sascha@422: 
sascha@422:     public CompactXYItems getItem(int idx) {
sascha@422:         return rings[idx];
sascha@422:     }
sascha@422: 
sascha@422: 
sascha@422:     public Object removeAttribute(Object key) {
sascha@422:         return attributes.remove(key);
sascha@422:     }
sascha@422: 
sascha@422: 
sascha@422:     public boolean hasAttribute(Object key) {
sascha@422:         return attributes.containsKey(key);
sascha@422:     }
sascha@422: 
sascha@422: 
ingo@795:     /**
ingo@795:      *
ingo@795:      * @return the range of the x axis.
ingo@795:      */
sascha@422:     public Range getDomainBounds() {
sascha@422:         double upper = Double.NEGATIVE_INFINITY;
sascha@422:         double lower = Double.POSITIVE_INFINITY;
sascha@422:         int    count = getItemCount();
sascha@422: 
sascha@422:         for (int i = 0; i < count; i++) {
sascha@422:             CompactXYItems  items = getItem(i);
sascha@422:             double          minX  = items.getMinX();
sascha@422:             double          maxX  = items.getMaxX();
sascha@422: 
sascha@422:             if (!Double.isNaN(minX)) {
sascha@422:                 lower = Math.min(lower, minX);
sascha@422:             }
sascha@422: 
sascha@422:             if (!Double.isNaN(maxX)) {
sascha@422:                 upper = Math.max(upper, maxX);
sascha@422:             }
sascha@422:         }
sascha@422: 
sascha@422:         if (lower > upper) {
sascha@422:             return null;
sascha@422:         }
sascha@422: 
sascha@422:         return new Range(lower, upper);
sascha@422:     }
sascha@422: 
sascha@422: 
ingo@795:     /**
ingo@795:      *
ingo@795:      * @return the range of the y axis.
ingo@795:      */
sascha@422:     public Range getRangeBounds() {
sascha@422:         double upper = Double.NEGATIVE_INFINITY;
sascha@422:         double lower = Double.POSITIVE_INFINITY;
sascha@422:         int    count = getItemCount();
sascha@422: 
sascha@422:         for (int i = 0; i < count; i++) {
sascha@422:             CompactXYItems  items = getItem(i);
sascha@422:             double          minY  = items.getMinY();
sascha@422:             double          maxY  = items.getMaxY();
sascha@422: 
sascha@422:             if (!Double.isNaN(minY)) {
sascha@422:                 lower = Math.min(lower, minY);
sascha@422:             }
sascha@422: 
sascha@422:             if (!Double.isNaN(maxY)) {
sascha@422:                 upper = Math.max(upper, maxY);
sascha@422:             }
sascha@422:         }
sascha@422: 
sascha@422:         if (lower > upper) {
sascha@422:             return null;
sascha@422:         }
sascha@422: 
sascha@422:         return new Range(lower, upper);
sascha@422:     }
sascha@422: }
sascha@422: // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 :