/**  This is a Supporting Class which has XY values in a method to be added
 *   into an ArrayList. Once added, it will calculate the values of
 *   Rho and Theta. Main will then print each of the Rho/theta values to stdout
 *   and calculate its distances. After Distance has been computed, it will print 
 *   out its values.  
 *   
 *  http://www.mathsisfun.com/polar-cartesian-coordinates.html
 *  http://hotmath.com/hotmath_help/topics/distance-formula.html
 *
 * @author Freeman Lo
 * @version 0.0.1 Build 1 Feb 1, 2014.
 * Limitations -  Besides not having try-catch error handling blocks
 * Everything else seem to work pretty well, it is a standalone software 
 * with embedded values in each Cartesian and Polar class. 
 *
 */

import java.io.*;
import java.text.DecimalFormat;
import java.util.*;
import java.lang.*;

public class Cartesian {
	private double x; // distance
	private double y; // degree
	
	private List <String> arrList = new ArrayList<String>(); 
	private List <Double> xList = new ArrayList<Double>(); 
	private List <Double> yList = new ArrayList<Double>();
	private List <Double> dist = new ArrayList<Double>(); 
	
	private DecimalFormat df = new DecimalFormat("####.00000000");
	
	public Cartesian () {
		arrList = new ArrayList<String>();
		xList = new ArrayList<Double>();
		yList = new ArrayList<Double>();
		dist = new ArrayList<Double>();
	}
	
	public List<Double> getX() {
		return xList;
	}
	
	public List<Double> getY() {
		return yList;
	}
	
	public void addPolar(){
		this.arrList.add("86.95508783 1.6277324");
		this.arrList.add("76.18701333 21.40898834");
		this.arrList.add("103.60365438 19.36886532");
		this.arrList.add("46.79347818 48.6735483");
		this.arrList.add("60.61060633 31.53442567");
		this.arrList.add("21.78581649 87.81660656");
		this.arrList.add("86.97213634 49.99536595");
		this.arrList.add("82.11747256 66.36622756");
		this.arrList.add("97.56776363 48.02020788");
		this.arrList.add("84.0321016 3.21311281");
	}
	
	public void printValues() {
		for (int i = 0; i < arrList.size(); i++) {	
		   String item = arrList.get(i);		
		   System.out.println("Item " + i + " : " + item);
		}
	}

	public void printXYValues() {
		for (int i = 0; i < xList.size(); i++) {	
		   Double x = xList.get(i);				
		   Double y = yList.get(i);							
		   System.out.println( i + "\t" + "X: " + df.format(x) + "  Y: " + df.format(y));		 
		}																
	}
	
	public void printDistanceResults() {
		System.out.println();
		for (int i = 0; i < this.dist.size(); i++) {			
		   String item = df.format(this.dist.get(i));	
		   System.out.println("Distance " + i + " : " + item);
		}
	}
	
	public void calX() {
		String item = "";
		String [] ele;

		for ( int c=0; c<this.arrList.size(); c++ ){
			item = (String) this.arrList.get(c);			
			ele = item.split(" ");				
			this.x = Double.parseDouble(ele[0]) * Math.cos(Double.parseDouble(ele[1]));	 
	
			this.xList.add(this.x);
		}
	}		
	
	public void calY() {
		String item = "";
		String [] ele;
		
		for ( int c=0; c<this.arrList.size(); c++ ){
			item = (String) this.arrList.get(c); 
			ele = item.split(" ");			
			this.y = Double.parseDouble(ele[0]) * Math.sin(Double.parseDouble(ele[1]));	

			this.yList.add(this.y);	
		}
	}
	
	public void calDistance() {
		double result = 0.00;		

		for ( int x = 1; x<11; x+=2) {			
			result = Math.sqrt(Math.pow((this.xList.get(x)-this.xList.get(x-1)),2) + Math.pow((this.yList.get(x)-this.yList.get(x-1)),2));
			this.dist.add(result);
		}	
	}
}