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1   // Copyright 2002, FreeHEP.
2   package org.freehep.graphicsio.emf.gdi;
3   
4   import java.awt.Point;
5   import java.awt.Rectangle;
6   import java.awt.geom.GeneralPath;
7   import java.io.IOException;
8   
9   import org.freehep.graphicsio.emf.EMFInputStream;
10  import org.freehep.graphicsio.emf.EMFTag;
11  import org.freehep.graphicsio.emf.EMFRenderer;
12  
13  /**
14   * PolylineTo TAG.
15   * 
16   * @author Mark Donszelmann
17   * @version $Id: PolylineTo.java 10367 2007-01-22 19:26:48Z duns $
18   */
19  public class PolylineTo extends AbstractPolygon {
20  
21      public PolylineTo() {
22          super(6, 1, null, 0, null);
23      }
24  
25      public PolylineTo(Rectangle bounds, int numberOfPoints, Point[] points) {
26          this(6, 1, bounds, numberOfPoints, points);
27      }
28  
29      protected PolylineTo (int id, int version, Rectangle bounds, int numberOfPoints, Point[] points) {
30          super(id, version, bounds, numberOfPoints, points);
31      }
32  
33      public EMFTag read(int tagID, EMFInputStream emf, int len)
34              throws IOException {
35  
36          Rectangle r = emf.readRECTL();
37          int n = emf.readDWORD();
38          return new PolylineTo(r, n, emf.readPOINTL(n));
39      }
40  
41      /**
42       * displays the tag using the renderer
43       *
44       * @param renderer EMFRenderer storing the drawing session data
45       */
46      public void render(EMFRenderer renderer) {
47          Point[] points = getPoints();
48          int numberOfPoints = getNumberOfPoints();
49          GeneralPath currentFigure = renderer.getFigure();
50  
51          if (points != null) {
52              for (int point = 0; point < numberOfPoints; point ++) {
53                  // add a point to gp
54                  currentFigure.lineTo(
55                      (float) points[point].getX(),
56                      (float) points[point].getY());
57              }
58          }
59      }
60  }