Class RCAP::CAP_1_1::Polygon

  1. lib/rcap/cap_1_1/polygon.rb
Parent: Object

A Polygon object is valid if

  • it has a minimum of three points
  • each Point object in the points collection is valid

Methods

public class

  1. new

public instance

  1. ==
  2. add_point
  3. to_s

Included modules

  1. Validation

Attributes

points [R] Collection of Point objects.

Public class methods

new ( attributes = {})
[show source] 
# File lib/rcap/cap_1_1/polygon.rb, line 18
      def initialize( attributes = {})
        @points = Array( attributes[ :points ])
      end

Public instance methods

== ( other )

Two polygons are equivalent if their collection of points is equivalent.

[show source] 
# File lib/rcap/cap_1_1/polygon.rb, line 48
      def ==( other )
        self.points == other.points
      end
add_point ( point_attributes = {})

Creates a new Point object and adds it to the points array. The poitn_attributes are passed as a parameter to Point.new.

[show source] 
# File lib/rcap/cap_1_1/polygon.rb, line 24
      def add_point( point_attributes = {})
        point = Point.new( point_attributes )
        self.points << point
        point
      end
to_s ()

Returns a string representation of the polygon of the form 

points[0] points[1] points[2] ... points[n-1] points[0]

where each point is formatted with Point#to_s

[show source] 
# File lib/rcap/cap_1_1/polygon.rb, line 33
      def to_s
        (@points + [ @points.first ]).join( ' ' )
      end