Class: VORuby::Simple::Parameters::Declination

Inherits:
Object
  • Object
show all
Defined in:
lib/voruby/simple/parameters.rb

Overview

Represents astronomical latitude.

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(dec) ⇒ Declination

Returns a new instance of Declination.



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# File 'lib/voruby/simple/parameters.rb', line 71

def initialize(dec)
 dec(dec)
end

Class Method Details

.convert_to_decimal_degrees(dec) ⇒ Object

Convert a Dec in d:m:s format to decimal degrees.



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# File 'lib/voruby/simple/parameters.rb', line 92

def self.convert_to_decimal_degrees(dec)
 degree, arcmin, arcsec = dec.split(':')
	
 degree_f = degree.to_f()
 arcmin_f = (arcmin.to_f() / 60.0)
 arcsec_f = (arcsec.to_f() / (60.0 * 60.0))
	
 return (degree_f - arcmin_f - arcsec_f) if degree_f < 0
 return degree_f + arcmin_f + arcsec_f
end

Instance Method Details

#dec(dec = nil) ⇒ Object 



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# File 'lib/voruby/simple/parameters.rb', line 75

def dec(dec=nil)
 if dec == nil
   return @dec
 else
   if dec.instance_of?(String)
     @dec = Declination.convert_to_decimal_degrees(dec)
   else
     @dec = dec.to_f()
   end
 end
end

#to_s ⇒ Object 



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# File 'lib/voruby/simple/parameters.rb', line 87

def to_s
 URI.escape(sprintf("DEC=%.3f", @dec))
end