/* AUTHOR: Sandy Bartlett
   COURSE: SI 543
   PROJECT: OO programming assignment
   DUE DATE: Feb. 11, 2002
   SUBMISSION DATE: Feb. 11, 2002
   
   SUMMARY
        A class that represents a tree. 
   
   INPUT
        none

   OUTPUT
        The draw method draws a representation of the tree on a Graphics 
	object.

   CLASS HIERARCHY 
        Object - Plant - Tree

   ASSUMPTIONS
        The specified land area will be greater than or equal to the
	minimum room size; sizes will be in square meters; huts are
	square. Room sizes will not be negative.
*/

import java.awt.*;

class Tree extends Plant 
{
   public static final String HEIGHT_UNITS = "meters";
   private static final Color BROWN = new Color(139, 69, 19);
   private static final Color DARK_GREEN = new Color(0, 100, 0);

   private boolean deciduous;
   private double height;

   public Tree()
   {
      super("Tree");
   } // default constructor

   // tree seed
   public Tree(String name, boolean deciduous)
   {
      super(name);
      this.deciduous = deciduous;
   } // constructor - tree seed 

   // baby tree
   public Tree(String name, boolean deciduous, double height)
   {
      super(name);
      this.deciduous = deciduous;
      if (height >= 0)
         this.height = height;
      else
	 this.height = .2;
   } // constructor - baby tree

   public Tree(String name, int age, double height, boolean deciduous)
   {
      this(name, age, height, deciduous, false, false);
   } // constructor - name age height deciduous

   // everything constructor
   public Tree(String n, int a, double h, boolean d, boolean p, boolean e)
   {
      super(n, a, p, e);
      deciduous = d;
      if (h >= 0)
         height = h;
      else
	 height = .2 * getAge();
   } // constructor - everything

   public void draw(Graphics g)
   {
      Color oldColor = g.getColor();
      g.setColor(BROWN);

      if (height == 0) // just a seed
	 g.fillOval(20, 300, 10, 5);
      else
      {
	 int trunkHeight = (int)(height * 2);
	 trunkHeight = trunkHeight > 150 ? 150 : 
		       trunkHeight < 10 ? 10 : trunkHeight;
	 int trunkWidth = getAge() > 30 ? 30 : getAge() < 2 ? 2 : getAge();

	 g.fillRect(100, 300 - trunkHeight, trunkWidth, trunkHeight);
	 g.setColor(DARK_GREEN);
	 g.fillOval(100 - trunkHeight / 2 - trunkWidth / 2, 
		    300 - trunkHeight * 2, trunkHeight * 2, trunkHeight);
      } // else 
      g.setColor(oldColor);
   } // draw

   public double getHeight()
   {
      return height;
   } // getHeight

   public void setHeight(double newHeight)
   {
      height = newHeight; // may get shorter if electric company tops it
   } // setHeight

   public boolean isDeciduous()
   {
      return deciduous;
   } // isDeciduous
} // Tree