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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: EMFPolygon.java 10367 2007-01-22 19:26:48Z duns $
18   */
19  public class EMFPolygon extends AbstractPolygon {
20  
21      public EMFPolygon() {
22          super(3, 1, null, 0, null);
23      }
24  
25      public EMFPolygon(Rectangle bounds, int numberOfPoints, Point[] points) {
26          super(3, 1, bounds, numberOfPoints, points);
27      }
28  
29      protected EMFPolygon (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 EMFPolygon(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  
49          // Safety check.
50          if (points.length > 1) {
51              GeneralPath path = new GeneralPath(
52                  renderer.getWindingRule());
53              path.moveTo((float)points[0].getX(), (float)points[0].getY());
54              for (int i = 1; i < points.length; i++) {
55                  path.lineTo((float)points[i].getX(), (float)points[i].getY());
56              }
57              path.closePath();
58              renderer.fillAndDrawOrAppend(path);
59          }
60      }
61  }