/**************************************************************************
/* This class is part of the Java Plotlib Toolkit.
/*
/* Copyright (c) 1999-2004 by Bernhard Bablok (bablokb@gmx.de)
/*
/* This program is free software; you can redistribute it and/or modify
/* it under the terms of the GNU General Public License as published
/* by  the Free Software Foundation; either version 2 of the License or
/* (at your option) any later version.
/*
/* This program is distributed in the hope that it will be useful, but
/* WITHOUT ANY WARRANTY; without even the implied warranty of
/* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
/* GNU Library General Public License for more details.
/*
/* You should have received a copy of the GNU General Public License
/* along with this program; see the file COPYING.  If not, write to
/* the Free Software Foundation Inc., 59 Temple Place - Suite 330,
/* Boston, MA  02111-1307 USA
/**************************************************************************/
package de.bablokb.plotlib.core;

import java.util.*;
import java.awt.*;
import java.awt.geom.*;

/**
   Plot lines. The lines share a common set of attributes (LineProperties).

   @version $Revision: 1.2 $
   @author  $Author: bablokb $
*/

public class Lines extends AbstractPlottable {
  
  /////////////////////////////////////////////////////////////////////////////

  /**
     List of lines (instances of Line2D).
  */

  private java.util.List iLines = new java.util.ArrayList();

  /////////////////////////////////////////////////////////////////////////////

  /**
     Construct a Line from (0,0) to (0,0) with default color, width and type.
  */

  public Lines() {
     iLines.add(Toolkit.getDefaultToolkit().getLine2D());
  }

  /////////////////////////////////////////////////////////////////////////////

  /**
     Construct a Line with specified Point2D coordinates and  with default
     color, width and type.
  */

  public Lines(Point2D p1, Point2D p2) {
    Line2D line = Toolkit.getDefaultToolkit().getLine2D();
    line.setLine(p1,p2);
    iLines.add(line);
  }

  /////////////////////////////////////////////////////////////////////////////

  /**
     Construct a Line with specified double coordinates and  with default
     color, width and type.
  */

  public Lines(double x1, double y1, double x2, double y2) {
    Line2D line = Toolkit.getDefaultToolkit().getLine2D();    
    line.setLine(x1,y1,x2,y2);
    iLines.add(line);
  }

  /////////////////////////////////////////////////////////////////////////////

  /**
     Create and initialize a Lines object with the given Lines2D object.
  */

  public Lines(Line2D line) {
    iLines.add(line);
  }

  /////////////////////////////////////////////////////////////////////////////

  /**
     Create and initialize a Lines object with the given list of Lines2D.
  */

  public Lines(java.util.List l) {
    iLines = l;
  }

  /////////////////////////////////////////////////////////////////////////////

  /**
     Sets properties-object.
  */

  public void setProperties(LineProperties lp) {
    iProperties = lp;
  }

  /////////////////////////////////////////////////////////////////////////////

  /**
     Sets the list of lines to the given list.
  */

  public void setLines(java.util.List l) {
    iLines = l;
  }

  /////////////////////////////////////////////////////////////////////////////

  /**
     Add a line to the list of lines. This is a convinience wrapper to
     the add()-method of java.util.List. If no list exists, an ArrayList
     is created. 
  */

  public void add(Line2D l) {
    if (iLines == null)
      iLines = new ArrayList();
    iLines.add(l);
  }

  /////////////////////////////////////////////////////////////////////////////

  /**
     Plot the line and/or lines.
  */

  public void plotObjects(PlottingContext pc) {
    Graphics2D g2 = pc.getG2();
    if (iLines != null) {
      ListIterator lit = iLines.listIterator();   // iterate all lines
      while (lit.hasNext())
	g2.draw(pc.transform((Line2D) lit.next()));
    }
  }
}