Class: VORuby::ADQL::Circle

Inherits:
Shape show all
Defined in:
lib/voruby/adql/adql.rb,
lib/voruby/adql/transforms.rb

Overview

Circle shape. The circle is defined by a center and a radius

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(ra, dec, radius, system = 'J2000') ⇒ Circle

Returns a new instance of Circle.



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# File 'lib/voruby/adql/adql.rb', line 1648

def initialize(ra, dec, radius, system='J2000')
  self.ra = ra
  self.dec = dec
  self.radius = radius
  self.system = system
  self.shape = 'CIRCLE'
end

Instance Attribute Details

#dec ⇒ Object

Returns the value of attribute dec.



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# File 'lib/voruby/adql/adql.rb', line 1646

def dec
  @dec
end

#ra ⇒ Object

Returns the value of attribute ra.



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# File 'lib/voruby/adql/adql.rb', line 1646

def ra
  @ra
end

#radius ⇒ Object

Returns the value of attribute radius.



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# File 'lib/voruby/adql/adql.rb', line 1646

def radius
  @radius
end

#shape ⇒ Object

Returns the value of attribute shape.



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# File 'lib/voruby/adql/adql.rb', line 1646

def shape
  @shape
end

#system ⇒ Object

Returns the value of attribute system.



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# File 'lib/voruby/adql/adql.rb', line 1646

def system
  @system
end

Class Method Details

.create_new_object(attributes) ⇒ Object 



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# File 'lib/voruby/adql/adql.rb', line 1724

def self.create_new_object(attributes)
  ra = RealType.new(attributes['ra'])
  dec = RealType.new(attributes['dec'])
  radius = RealType.new(attributes['radius'])

  return Circle.new(ra, dec, radius)
end

.from_xml(node) ⇒ Object 



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# File 'lib/voruby/adql/adql.rb', line 1710

def self.from_xml(node)
  unit = node.attributes['unit'] || 'deg'

  center = REXML::XPath.first(node, 'reg:Center', {'reg' => 'http://www.ivoa.net/xml/STC/STCregion/v1.10'}).text
  ra_s, dec_s = center.split(/\s+/)
  ra = RealType.new(ra_s.to_f)
  dec = RealType.new(dec_s.to_f)

  radius_s = REXML::XPath.first(node, 'reg:Radius', {'reg' => 'http://www.ivoa.net/xml/STC/STCregion/v1.10'}).text
  radius = RealType.new(radius_s.to_f)

  return Circle.new(ra, dec, radius)
end

Instance Method Details

#match_attributtes(attributes) ⇒ Object 



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# File 'lib/voruby/adql/adql.rb', line 1732

def match_attributtes(attributes)
  return true if self.ra.value == attributes['ra'] and
      self.dec.value == attributes['dec'] and
      self.radius.value == attributes['radius']
  return false
end

#to_adqls ⇒ Object 



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# File 'lib/voruby/adql/transforms.rb', line 328

def to_adqls
  "#{self.shape.to_adqls} #{self.system.to_adqls} #{self.ra.to_adqls} #{self.dec.to_adqls} #{self.radius.to_adqls}"
end

#to_adqlx ⇒ Object 



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# File 'lib/voruby/adql/transforms.rb', line 332

def to_adqlx
  circle = "xsi:type=\"reg:circleType\" unit=\"deg\">\n"
  circle << "<reg:Center>#{self.ra.value} #{self.dec.value}</reg:Center>\n"
  circle << "<reg:Radius>#{self.radius.value}</reg:Radius>\n"
  return circle
end

#to_s ⇒ Object 



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# File 'lib/voruby/adql/adql.rb', line 1706

def to_s
  "{shape=#{self.shape},system=#{self.system},ra=#{self.ra},dec=#{self.dec},radius=#{self.radius}}"
end