Object design

objects.js

function point(x, y) {
  return {
    x: x, y: y,
    shift: function(x, y) {
      return _.extend({}, this, {
        x: this.x + x,
        y: this.y + y
      })
    }
  }
}

var a = point(10, 10);
var b = a.shift(1,1);

console.log(a,b);

function color(r, g, b) {
  return {
    r: r, g: g, b: b,
    toArray: function() {
      return [r, g, b, 255];
    }
  }
}

function pixel(point, color) {
  
}