Class: GeneralUnits::Box

Inherits:
Object
  • Object
show all
Defined in:
lib/general_units/derivatives/box.rb,
lib/general_units/derivatives/box/packer.rb

Defined Under Namespace

Classes: Packer

Constant Summary collapse

VALUES = 
%w{length width height}

Instance Method Summary collapse

Constructor Details

#initialize(length = 0, width = 0, height = 0, unit) ⇒ Box

Returns a new instance of Box.



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# File 'lib/general_units/derivatives/box.rb', line 15

def initialize(length = 0, width = 0, height = 0, unit)
  if unit = valid_unit(unit)
    VALUES.each {|v| instance_variable_set(:"@#{v}", validate_dimension_value(eval(v), unit))}
    @unit = unit
  end
end

Instance Method Details

#*(other_object) ⇒ Object 



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# File 'lib/general_units/derivatives/box.rb', line 114

def *(other_object)
  other_object = validate_capacity_or_length(other_object)
  case other_object
  when Length, Volume then Box.new(*values.map {|v| v * other_object}, unit)
  when Box then Box.new(*VALUES.map {|v| eval(v) * other_object.send(v)}, unit)
  end
end

#+(other_object) ⇒ Object 



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# File 'lib/general_units/derivatives/box.rb', line 98

def +(other_object)
  other_object = validate_capacity_or_length(other_object)
  case other_object
  when Length, Volume then Box.new(*values.map {|v| v + other_object/3}, unit)
  when Box then Box.new(*VALUES.map {|v| eval(v) + other_object.send(v)}, unit)
  end
end

#-(other_object) ⇒ Object 



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# File 'lib/general_units/derivatives/box.rb', line 106

def -(other_object)
  other_object = validate_capacity_or_length(other_object)
  case other_object
  when Length, Volume then Box.new(*values.map {|v| v - other_object/3}, unit)
  when Box then Box.new(*VALUES.map {|v| eval(v) - other_object.send(v)}, unit)
  end
end

#-@ ⇒ Object 



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# File 'lib/general_units/derivatives/box.rb', line 83

def -@
  Box.new(*values.map {|v| -v}, unit)    
end

#/(other_object) ⇒ Object 



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# File 'lib/general_units/derivatives/box.rb', line 122

def /(other_object)
  other_object = validate_capacity_or_length(other_object)
  case other_object
  when Length, Volume then Box.new(*values.map {|v| v / other_object}, unit)
  when Box then Box.new(*VALUES.map {|v| eval(v) / other_object.send(v)}, unit)
  end
end

#==(other_object) ⇒ Object 



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# File 'lib/general_units/derivatives/box.rb', line 87

def ==(other_object)
  other_object = validate_box(other_object)
  length == other_object.length && width == other_object.width && height == other_object.height
rescue
  false
end

#amount ⇒ Object 



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# File 'lib/general_units/derivatives/box.rb', line 30

def amount
  volume.amount
end

#attributes ⇒ Object 



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# File 'lib/general_units/derivatives/box.rb', line 22

def attributes
  {:length => length, :width => width, :height => height, :unit => unit}
end

#concat_with(other_box, &block) ⇒ Object 



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# File 'lib/general_units/derivatives/box.rb', line 150

def concat_with(other_box, &block)
  #other_box = other_box.convert_to(unit)
  
  length_1, width_1, height_1 = *values.sort.reverse
  length_2, width_2, height_2 = *other_box.values.sort.reverse

  x1 = (length_1 - length_2).abs
  length = [length_1, length_2].max

  x2 = (width_1 - width_2).abs
  width = [width_1, width_2].max

  height = height_1 + height_2

  if x1 > 0
    y1 = width
    z1 = length_1 > length_2 ? height_2 : height_1
    yield(Box.new(x1, y1, z1, unit)) if block_given?
  end

  if x2 > 0
    y2 = ((length_1 > length_2) && (width_1 > width_2)) ? length-x1 : length
    z2 = width_1 > width_2 ? height_2 : height_1
    yield(Box.new(x2, y2, z2, unit)) if block_given?
  end
  
  Box.new(length, width, height, unit).convert_to(unit)
end

#convert_to(unit) ⇒ Object 



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# File 'lib/general_units/derivatives/box.rb', line 42

def convert_to(unit)
  Box.new(*values.map {|v| v.convert_to(unit).amount}, unit)
end

#eql?(other_object) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/general_units/derivatives/box.rb', line 94

def eql?(other_object)
  self == other_object
end

#estimated_spaces_with(other_box, &block) ⇒ Object 



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# File 'lib/general_units/derivatives/box.rb', line 179

def estimated_spaces_with(other_box, &block)
  #other_box = other_box.convert_to(unit)
  
  if includes?(other_box)
    length_1, width_1, height_1 = *values.sort.reverse
    length_2, width_2, height_2 = *other_box.values.sort.reverse
    
    estimated_spaces = []
    
    x1 = (length_1 - length_2).abs
    if x1 > 0
      space1 = Box.new(x1, width_1, height_1, unit)
      estimated_spaces << space1
      yield(space1) if block_given?
    end
  
    x2 = (width_1 - width_2).abs
    if x2 > 0
      space2 = Box.new(length_1 - x1, x2, height_1, unit)
      estimated_spaces << space2
      yield(space2) if block_given?
    end
  
    x3 = (height_1 - height_2).abs
    if x3 > 0
      space3 = Box.new(length_2, width_2, x3, unit)
      estimated_spaces << space3
      yield(space3) if block_given?
    end
    
    estimated_spaces
  end
end

#has_space? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/general_units/derivatives/box.rb', line 38

def has_space?
  length > 0 && width > 0 && height > 0
end

#includes?(other_object) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/general_units/derivatives/box.rb', line 75

def includes?(other_object)
  other_object = validate_box(other_object)
  eval VALUES.permutation.to_a.map {|values_names| "(length >= other_object.#{values_names[0]} && width >= other_object.#{values_names[1]} && height >= other_object.#{values_names[2]})"}.join("||")
end

#inspect ⇒ Object 



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# File 'lib/general_units/derivatives/box.rb', line 66

def inspect
  "<#{self.class.name} length=#{length} width=#{width} height=#{height} unit=#{unit}>"
end

#max_face ⇒ Object 



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# File 'lib/general_units/derivatives/box.rb', line 62

def max_face
  two_max_values[0] * two_max_values[1]
end

#multiplicator(sum) ⇒ Object

ARITHMETICS END ###



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# File 'lib/general_units/derivatives/box.rb', line 132

def multiplicator(sum)
  GeneralUnits::Arithmetics.three_factors_of(sum).map do |v|
    Box.new(v[0]*length, v[1]*width, v[2]*height, unit)
  end
end

#multiply_to_optimal(sum) ⇒ Object 



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# File 'lib/general_units/derivatives/box.rb', line 142

def multiply_to_optimal(sum)
  if sum.odd?
    [multiply_to_strong_box(sum-1), self]
  else
    [multiply_to_strong_box(sum)]
  end.compact
end

#multiply_to_strong_box(sum) ⇒ Object 



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# File 'lib/general_units/derivatives/box.rb', line 138

def multiply_to_strong_box(sum)
  multiplicator(sum).min_by {|box| box.values.max - box.values.min}
end

#same_size?(other_object) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/general_units/derivatives/box.rb', line 70

def same_size?(other_object)
  other_object = validate_box(other_object)
  eval VALUES.permutation.to_a.map {|values_names| "(length == other_object.#{values_names[0]} && width == other_object.#{values_names[1]} && height == other_object.#{values_names[2]})"}.join("||")
end

#to_s(*args) ⇒ Object 



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# File 'lib/general_units/derivatives/box.rb', line 46

def to_s(*args)
  options = args.extract_options!
  value = values.map {|d| d.rounded(options[:round])}.join("x")
  unit_string = unit.to_s(options.merge(:count => values.last.rounded), :format => :short)
  "#{value} #{unit_string}"
end

#to_volume ⇒ Object 



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# File 'lib/general_units/derivatives/box.rb', line 53

def to_volume
  volume
end

#two_max_values ⇒ Object 



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# File 'lib/general_units/derivatives/box.rb', line 57

def two_max_values
  sorted = values.sort.reverse
  sorted.first(2)
end

#values ⇒ Object 



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# File 'lib/general_units/derivatives/box.rb', line 26

def values
  VALUES.map {|v| self.send(v)}
end

#volume ⇒ Object 



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# File 'lib/general_units/derivatives/box.rb', line 34

def volume
  Volume.new(length * width * height, :"cubic_#{unit.code}")
end