Class: VORuby::STC::V1_10::Coords::AstronTime

Inherits:
Object
  • Object
show all
Includes:
SerializableToXml
Defined in:
lib/voruby/stc/1.10/coords.rb

Overview

AstronTime is the generalized astronomical time type and consists of two or three elements: TimeScale, optional relative time offset, and an absolute time (ISO8601 or a decimal JD or MJD; or it may be an IDREF to one of those three)

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Methods included from SerializableToXml

#element

Constructor Details

#initialize(timescale, absolute_time, relative_time = nil) ⇒ AstronTime

Returns a new instance of AstronTime.



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# File 'lib/voruby/stc/1.10/coords.rb', line 323

def initialize(timescale, absolute_time, relative_time=nil)
  self.timescale = timescale
  self.absolute_time = absolute_time
  self.relative_time = relative_time
end

Instance Attribute Details

#absolute_time ⇒ Object

Returns the value of attribute absolute_time.



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# File 'lib/voruby/stc/1.10/coords.rb', line 321

def absolute_time
  @absolute_time
end

#relative_time ⇒ Object

Returns the value of attribute relative_time.



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# File 'lib/voruby/stc/1.10/coords.rb', line 321

def relative_time
  @relative_time
end

#timescale ⇒ Object

Returns the value of attribute timescale.



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# File 'lib/voruby/stc/1.10/coords.rb', line 321

def timescale
  @timescale
end

Class Method Details

.from_xml(xml) ⇒ Object 



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# File 'lib/voruby/stc/1.10/coords.rb', line 359

def self.from_xml(xml)
  root = element_from(xml)
  
  options = {
    :timescale => TimeScale.new(REXML::XPath.first(root, 'x:Timescale', {'x' => obj_ns.uri}).text),
    :absolute_time => xml_to_obj(root, AbsoluteTime, true)
  }
  options[:relative_time] = xml_to_obj(root, RelativeTime, true)
  
  AstronTime.new(options[:timescale], options[:absolute_time], options[:relative_time])
end

Instance Method Details

#==(time) ⇒ Object 



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# File 'lib/voruby/stc/1.10/coords.rb', line 371

def ==(time)
  self.timescale == time.timescale and
  self.absolute_time == time.absolute_time and
  self.relative_time == time.relative_time
end

#to_xml(name = nil, ns = nil) ⇒ Object 



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# File 'lib/voruby/stc/1.10/coords.rb', line 344

def to_xml(name=nil, ns=nil)
  el = element(name, ns)
  
  timescale = REXML::Element.new("#{obj_ns.prefix}:Timescale")
  timescale.text = self.timescale.to_s

  el.add_element(timescale)
  el.add_element(self.relative_time.to_xml) if self.relative_time
  el.add_element(self.absolute_time.to_xml)
  
  collapse_namespaces(el)
  
  el
end