/**************************************************************************
/* 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 a symbol. A Symbol is defined by the location (Point2D) and various
   attributes (see SymbolProperties). The actual graphical form of the
   symbol is implemented by a private class, which implements a
   <em>plot()</em> method.

   @version $Revision: 1.3 $
   @author  $Author: bablokb $
*/

public class Symbol extends AbstractPlottable {

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

  /**
     Symbol location (instance of Point2D).
  */

  private Point2D iPoint;

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

  /**
     Default constructor: create and initialize a Symbol object.
  */

  public Symbol() {
     iPoint = Toolkit.getDefaultToolkit().getPoint2D();
  }

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

  /**
     Create and initialize a Symbol object with a given point.
  */

  public Symbol(Point2D p) {
    this();
    iPoint.setLocation(p);
  }

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

  /**
     Create and initialize a Symbol object with given coordinates.
  */

  public Symbol(double x, double y) {
    this();
    iPoint.setLocation(x,y);
  }

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

  /**
     Sets properties-object.
  */

  public void setProperties(SymbolProperties sp) {
    iProperties = sp;
  }

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

  /**
     Set the location from given Point2D.
  */

  public void setPoint(Point2D p) {
    iPoint.setLocation(p);
  }

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

  /**
     Set the location from given coordinates.
  */

  public void setPoint(double x, double y) {
    iPoint.setLocation(x,y);
  }

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

  /**
     Query the location.
  */

  public Point2D getPoint() {
    return iPoint;
  }

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

  /**
     Plot the symbol.

  */

  public void plotObjects(PlottingContext pc) {
    SymbolProperties sp;
    if (iProperties == null)
      sp = new SymbolProperties();
    else
      sp = (SymbolProperties) iProperties;
    int symbolType = sp.getSymbolType();
    if (symbolType == Plotlib.NONE)
      return;
    Graphics2D g2 = pc.getG2();

    Form form = Plotlib.FORM_TABLE[symbolType];
    form.setSize(sp.getSize());
    form.setG2(g2);
    if (iPoint != null)
      form.plot(pc.transform(iPoint));
  }
}