Class: Point

Inherits:
ActiveRecord::Base
  • Object
show all
Includes:
Validation
Defined in:
lib/generators/rcap/models/templates/models/point.rb

Overview

A Point object is valid if

  • it has a latitude within the minimum and maximum latitude values

  • it has a longitude within the minimum and maximum longitude values

Direct Known Subclasses

Circle

Constant Summary collapse

MAX_LONGITUDE = 
180
MIN_LONGITUDE = 
-180
MAX_LATITUDE = 
90
MIN_LATITUDE = 
-90
LATITUDE_KEY =

:nodoc:

'latitude_hash'
LONGITUDE_KEY =

:nodoc:

'longitude_hash'

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(attributes = {}) ⇒ Point

Returns a new instance of Point.



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# File 'lib/generators/rcap/models/templates/models/point.rb', line 19

def initialize( attributes = {} )
  @latitude = attributes[ :latitude ]
  @longitude = attributes[ :longitude ]
end

Instance Attribute Details

#latitude ⇒ Object

Returns the value of attribute latitude.



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# File 'lib/generators/rcap/models/templates/models/point.rb', line 12

def latitude
  @latitude
end

#longitude ⇒ Object

Returns the value of attribute longitude.



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# File 'lib/generators/rcap/models/templates/models/point.rb', line 13

def longitude
  @longitude
end

Class Method Details

.from_h(point_hash) ⇒ Object

:nodoc:



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# File 'lib/generators/rcap/models/templates/models/point.rb', line 48

def self.from_h( point_hash ) # :nodoc:
  self.new( :latitude => point_hash[ LATITUDE_KEY ], :longitude => point_hash[ LONGITUDE_KEY ])
end

Instance Method Details

#==(other) ⇒ Object

Two points are equivalent if they have the same latitude and longitude



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# File 'lib/generators/rcap/models/templates/models/point.rb', line 35

def ==( other )
	[ self.latitude, self.longitude ] == [ other.latitude, other.longitude ]
end

#inspect ⇒ Object

:nodoc:



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# File 'lib/generators/rcap/models/templates/models/point.rb', line 30

def inspect # :nodoc:
  '('+self.to_s+')'
end

#to_h ⇒ Object

:nodoc:



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# File 'lib/generators/rcap/models/templates/models/point.rb', line 42

def to_h # :nodoc:
  RCAP.attribute_values_to_hash(
    [ LATITUDE_KEY, self.latitude ],
    [ LONGITUDE_KEY, self.longitude ])
end

#to_s ⇒ Object

Returns a string representation of the point of the form

latitude,longitude



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# File 'lib/generators/rcap/models/templates/models/point.rb', line 26

def to_s
  "#{ self.latitude },#{ self.longitude }"
end