Bloc Web Development Advanced Classes Checkpoint

advancedclasses

## Inheritance ##

class Shape
  attr_accessor :color
  
  def initialize(color = nil)
    @color = color || 'Red'
  end
  
  def larger_than?(shape)
    if self.area >= shape.area
      true
    else
      false
  end
  end
end

class Rectangle < Shape
  attr_accessor :width, :height
  
  def initialize(width, height, color = nil)
    @width, @height = width, height
    super(color)
  end
  
  def area
    @width * @height
  end
end

class Square < Rectangle
  
   def initialize(side, color = nil)
    @width, @height = width, height
    super(side, side, color)
  end
  
end

class Circle < Shape
  attr_accessor :radius
  
  def initialize(radius, color =nil)
    @radius = radius
    super(color)
  end
  
  def area
  p  Math::PI * (radius*radius)
  end
end