Class: Circle

Inherits:

Object

• Object
• Circle

Defined in:

lib/shapedoc.rb

Instance Attribute Summary

• #radius ⇒ Object readonly

  Returns the value of attribute radius.

Instance Method Summary

• #area ⇒ Object
• #circumference ⇒ Object
• #diagram ⇒ Object
• #initialize(radius) ⇒ Circle constructor

  A new instance of Circle.

Constructor Details

#initialize(radius) ⇒ Circle

Returns a new instance of Circle.

# File 'lib/shapedoc.rb', line 82

def initialize(radius); @radius = radius; end

Instance Attribute Details

#radius ⇒ Object (readonly)

Returns the value of attribute radius.

# File 'lib/shapedoc.rb', line 81

def radius
  @radius
end

Instance Method Details

#area ⇒ Object

# File 'lib/shapedoc.rb', line 84

def area; Math::PI*@radius**2; end

#circumference ⇒ Object

# File 'lib/shapedoc.rb', line 83

def circumference; 2*Math::PI*@radius; end

#diagram ⇒ Object

# File 'lib/shapedoc.rb', line 85

def diagram; "\u25cb"; end