// Copyright 2001, FreeHEP.
package org.freehep.graphicsio.cgm;

import java.awt.geom.Point2D;
import java.io.IOException;

/**
 * PolygonSet TAG.
 *
 * @author Mark Donszelmann
 * @author Charles Loomis
 * @version $Id: PolygonSet.java,v 1.1.1.1 2004/05/31 05:08:53 kuromaru Exp $
 */
public class PolygonSet
    extends CGMTag {
        
    public static final int INVISIBLE       = 0;
    public static final int VISIBLE         = 1;
    public static final int CLOSE_INVISIBLE = 2;
    public static final int CLOSE_VISIBLE   = 3;
    
    private Point2D[] p;
    private int[] flags;
        
    public PolygonSet() {
        super(4, 8, 1);
    }
    
    public PolygonSet(Point2D[] p, int[] flags) {
        this();
        this.p = p;
        this.flags = flags;
    }

    public void write(int tagID, CGMOutputStream cgm) throws IOException {
        for (int i=0; i<p.length; i++) {
            cgm.writePoint(p[i]);
            cgm.writeEnumerate(flags[i]);
        }
    }

    public void write(int tagID, CGMWriter cgm) throws IOException {
        cgm.println("POLYGONSET");
        for (int i=0; i<p.length; i++) {
            cgm.writePoint(p[i]);
            cgm.print(", ");
            switch (flags[i]) {
                default:
                case INVISIBLE:         cgm.print("INVIS"); break;
                case VISIBLE:           cgm.print("VIS"); break;
                case CLOSE_INVISIBLE:   cgm.print("CLOSEINVIS"); break;
                case CLOSE_VISIBLE:     cgm.print("CLOSEVIS"); break;
            }
            cgm.println();
        }
    }
}
