Point2DListModel


1   package JSci.awt;
2   
3   import java.awt.geom.Point2D  ;
4   import java.util.List  ;
5   
6   /**
7   * The Point2DListModel provides a convenient implementation of
8   * the Graph2DModel interface based upon a List of Point2D objects.
9   * @version 1.0
10  * @author Mark Hale
11  */
12  public final class Point2DListModel extends AbstractGraphModel implements Graph2DModel {
13          private List   data;
14  
15          public Point2DListModel() {}
16          /**
17          * Sets the list of points to be plotted.
18          */
19          public void setData(List   points) {
20                  data = points;
21                  fireGraphDataChanged();
22          }
23  
24  // Graph2DModel interface
25  
26          public float getXCoord(int i) {
27                  Point2D   p = (Point2D  ) data.get(i);
28                  return (float) p.getX();
29          }
30          public float getYCoord(int i) {
31                  Point2D   p = (Point2D  ) data.get(i);
32                  return (float) p.getY();
33          }
34          public int seriesLength() {
35                  return data.size();
36          }
37          public void firstSeries() {}
38          public boolean nextSeries() {
39                  return false;
40          }
41  }
42  
43

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