package org.jzy3d.plot3d.rendering.ordering;

import java.util.Collections;
import java.util.Comparator;
import java.util.List;

import org.jzy3d.maths.Coord3d;
import org.jzy3d.plot3d.rendering.view.Camera;


public class PointOrderingStrategy implements Comparator{
    protected Camera camera;
    
    public void sort(List points, Camera cam){
        this.camera = cam;
        Collections.sort(points, this);
    }
    
    @Override
    public int compare(Coord3d o1, Coord3d o2) {
        if( o1.equals(o2) )
            return 0;
        else{
            double d1 = camera.getEye().distance(o1);
            double d2 = camera.getEye().distance(o2);
            if (d1d1)
                return -1;
            else
                return 0;
        }
    }
}