Class: Languages::Generic::Millimetres

Inherits:
Object
  • Object
show all
Defined in:
lib/languages/generic/millimetres.rb

Instance Method Summary collapse

Constructor Details

#initialize(int) ⇒ Millimetres

Returns a new instance of Millimetres.



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# File 'lib/languages/generic/millimetres.rb', line 4

def initialize(int)
  @int = int
end

Instance Method Details

#+(other) ⇒ Object 



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# File 'lib/languages/generic/millimetres.rb', line 12

def +(other)
  if other.is_a? Millimetres
    self.class.new(@int + other.to_i)
  elsif other.is_a? Integer
    self.class.new(@int + other)
  else
    if other.respond_to? :coerce
      a,b = other.coerce(self)
      a + b
    else
      raise TypeError, "#{other.class} can't be coerced into #{self.class.name}"
    end
  end
end

#-(other) ⇒ Object 



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# File 'lib/languages/generic/millimetres.rb', line 27

def -(other)
  if other.is_a? Millimetres
    self.class.new(@int - other.to_i)
  elsif other.is_a? Integer
    self.class.new(@int - other)
  else
    if other.respond_to? :coerce
      a,b = other.coerce(self)
      a - b
    else
      raise TypeError, "#{other.class} can't be coerced into #{self.class.name}"
    end
  end        
end

#==(other) ⇒ Object 



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# File 'lib/languages/generic/millimetres.rb', line 42

def ==(other)
  @int == other.to_i
end

#coerce(other) ⇒ Object 



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# File 'lib/languages/generic/millimetres.rb', line 46

def coerce(other)
  [Millimetres.new(other),self]
end

#to_dots(ratio = :dpi203) ⇒ Object 



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# File 'lib/languages/generic/millimetres.rb', line 50

def to_dots(ratio = :dpi203)
  dpm = if ratio == :dpi203
          (203/25.4)
        else
          (300/25.4)
        end
  Languages::Generic::Dots.new((@int * dpm).round)
end

#to_i ⇒ Object 



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# File 'lib/languages/generic/millimetres.rb', line 8

def to_i
  @int
end