package uk.ac.leeds.ccg.shapefile;

import java.io.*;
import cmp.LEDataStream.*;
import uk.ac.leeds.ccg.geotools.*; //comment out to remove GeoTools dependence

/**
 * Wrapper for a Shapefile point.
 * This now extends GeoPoint from the GeoTools package.
 * To use this class without requiering any of geotools un-coment the marked lines and remove extends
 */
public class ShapePoint extends GeoPoint implements ShapefileShape,Serializable  {
   // protected double x,y;  //un coment to remove GeoTools dependence
    
    public ShapePoint(LEDataInputStream file) throws IOException{
        file.setLittleEndianMode(true);
        int shapeType = file.readInt();
        x = file.readDouble();
        y = file.readDouble();
    }
    
    public void write(LEDataOutputStream file)throws IOException{
        file.setLittleEndianMode(true);
        file.writeInt(Shapefile.POINT);
        file.writeDouble(x);
        file.writeDouble(y);
    }
        
        
    
    /**
     * Create a new point from x,y values
     */
    public ShapePoint(double x,double y){
        this.x = x;
        this.y = y;
    }
    
    /**
     * Create a new point from an existing one
     * @param p The existing point
     */
    public ShapePoint(ShapePoint p){
        this.x = p.x;
        this.y = p.y;
    }
    
    /**
     * Return the x value of this point.
     * @return The x value
     */
    public double getX(){
        return x;
    }
    
    /**
     * Return the y value of this point.
     * @return The y value
     */
    public double getY(){
        return y;
    }
    
    /**
     * Return this point as an array.
     * @return double[2] in the form {x,y}
     */
    public double[] getPoint(){
        double[] d = {x,y};
        return d;
    }
    
    public String toString(){
        return(x+","+y);
    }
    
    /**
     * Returns the shapefile shape type value for a point
     * @return int Shapefile.POINT
     */
    public int getShapeType(){
        return Shapefile.POINT;
    }
    
    public int getLength(){
        return 10;//the length of two doubles in 16bit words + the shapeType 
    }
    
}