sascha@422: package de.intevation.gnv.jfreechart;
sascha@422: 
sascha@422: import java.io.Serializable;
sascha@422: 
sascha@422: /**
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 CompactXYItems
sascha@422: implements   Serializable
sascha@422: {
sascha@422:     protected double [] data;
sascha@422: 
sascha@422:     public CompactXYItems(double [] data) {
sascha@422:         this.data = data;
sascha@422:     }
sascha@422: 
sascha@422:     public double getX(int index) {
sascha@422:         return data[index << 1];
sascha@422:     }
sascha@422: 
sascha@422:     public double getY(int index) {
sascha@422:         return data[(index << 1)+1];
sascha@422:     }
sascha@422: 
sascha@422:     public void get(int index, double [] xy) {
sascha@422:         xy[0] = data[index = (index << 1) + 1];
sascha@422:         xy[1] = data[index + 1];
sascha@422:     }
sascha@422: 
sascha@422:     public double [] getData() {
sascha@422:         return data;
sascha@422:     }
sascha@422: 
sascha@422:     public void setData(double [] data) {
sascha@422:         this.data = data;
sascha@422:     }
sascha@422: 
sascha@422:     public int size() {
sascha@422:         return data.length >> 1;
sascha@422:     }
sascha@422: 
sascha@422:     public double [] calculateBoundingBox(double [] bbox)  {
sascha@422:         for (int i = 0; i < data.length;) {
sascha@422:             double x = data[i++];
sascha@422:             double y = data[i++];
sascha@422:             if (x < bbox[0]) bbox[0] = x;
sascha@422:             if (y < bbox[1]) bbox[1] = y;
sascha@422:             if (x > bbox[2]) bbox[2] = x;
sascha@422:             if (y > bbox[3]) bbox[3] = y;
sascha@422:         }
sascha@422:         return bbox;
sascha@422:     }
sascha@422: 
sascha@422:     public String toString() {
sascha@422:         StringBuilder sb = new StringBuilder();
sascha@422:         for (int i = 0; i < data.length;) {
sascha@422:             if (i > 0) sb.append("; ");
sascha@422:             sb.append('(');
sascha@422:             sb.append(data[i++]);
sascha@422:             sb.append(", ");
sascha@422:             sb.append(data[i++]);
sascha@422:             sb.append(')');
sascha@422:         }
sascha@422:         return sb.toString();
sascha@422:     }
sascha@422: 
sascha@422: 
sascha@422:     public double getMinX() {
sascha@422:         double lower = Double.POSITIVE_INFINITY;
sascha@422: 
sascha@422:         for (int i = 0; i < data.length; i += 2) {
sascha@422:             double x = data[i];
sascha@422: 
sascha@422:             if (!Double.isNaN(x)) {
sascha@422:                 lower = Math.min(lower, x);
sascha@422:             }
sascha@422:         }
sascha@422: 
sascha@422:         return lower;
sascha@422:     }
sascha@422: 
sascha@422: 
sascha@422:     public double getMaxX() {
sascha@422:         double upper = Double.NEGATIVE_INFINITY;
sascha@422: 
sascha@422:         for (int i = 0; i < data.length; i += 2) {
sascha@422:             double x = data[i];
sascha@422: 
sascha@422:             if (!Double.isNaN(x)) {
sascha@422:                 upper = Math.max(upper, x);
sascha@422:             }
sascha@422:         }
sascha@422: 
sascha@422:         return upper;
sascha@422:     }
sascha@422: 
sascha@422: 
sascha@422:     public double getMinY() {
sascha@422:         double lower = Double.POSITIVE_INFINITY;
sascha@422: 
sascha@422:         for (int i = 1; i < data.length; i += 2) {
sascha@422:             double y = data[i];
sascha@422: 
sascha@422:             if (!Double.isNaN(y)) {
sascha@422:                 lower = Math.min(lower, y);
sascha@422:             }
sascha@422:         }
sascha@422: 
sascha@422:         return lower;
sascha@422:     }
sascha@422: 
sascha@422: 
sascha@422:     public double getMaxY() {
sascha@422:         double upper = Double.NEGATIVE_INFINITY;
sascha@422: 
sascha@422:         for (int i = 1; i < data.length; i += 2) {
sascha@422:             double y = data[i];
sascha@422: 
sascha@422:             if (!Double.isNaN(y)) {
sascha@422:                 upper = Math.max(upper, y);
sascha@422:             }
sascha@422:         }
sascha@422: 
sascha@422:         return upper;
sascha@422:     }
sascha@422: }
sascha@422: // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 :