var CircularColor = {};
CircularColor.redCircular = function(){
  this.getColor = function(){
    return 'red';
  }
}
CircularColor.greenCircular = function(){
  this.getColor = function(){
    return 'green';
  }
}
 
var CircularRadius = {};
CircularRadius.small = function(){
  this.x = this.y = 0;
  this.radius = 5;
  this.color = null;
  this.setColor = function(circularColor){
    this.color = circularColor.getColor();
  }
  this.draw = function(){
    console.log('画一个小圆！颜色：' + this.color + ' 原点坐标：x:' + this.x + ' y:' + this.y + ' 半径：' + this.radius);
  }
}
CircularRadius.big = function(){
  this.x = this.y = 0;
  this.radius = 20;
  this.color = null;
  this.setColor = function(circularColor){
    this.color = circularColor.getColor();
  }
  this.draw = function(){
    console.log('画一个大圆！颜色：' + this.color + ' 原点坐标：x:' + this.x + ' y:' + this.y + ' 半径：' + this.radius);
  }
}
 
var color = new CircularColor.redCircular();
var radius = new CircularRadius.big();
radius.setColor(color);
radius.draw();//画一个大圆！颜色：red 原点坐标：x:0 y:0 半径：20