Class: M26::AgeGrade

Inherits:
Object
  • Object
show all
Defined in:
lib/m26_age_grade.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(a1, a2) ⇒ AgeGrade

Returns a new instance of AgeGrade.



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# File 'lib/m26_age_grade.rb', line 13

def initialize(a1, a2)
  @age1, @age2 = a1.to_f, a2.to_f
end

Instance Attribute Details

#age1 ⇒ Object

Returns the value of attribute age1.



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# File 'lib/m26_age_grade.rb', line 11

def age1
  @age1
end

#age2 ⇒ Object

Returns the value of attribute age2.



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# File 'lib/m26_age_grade.rb', line 11

def age2
  @age2
end

Instance Method Details

#calculate(elapsed_time, formula = 'maxpulse') ⇒ Object 



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# File 'lib/m26_age_grade.rb', line 19

def calculate(elapsed_time, formula='maxpulse')
  if formula.to_s == 'maxpulse'
    calculate_maxpulse(elapsed_time)
  else
    nil
  end
end

#calculate_maxpulse(elapsed_time) ⇒ Object 



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# File 'lib/m26_age_grade.rb', line 27

def calculate_maxpulse(elapsed_time)
  p1, p2 = maxpulse1.to_f, maxpulse2.to_f
  ratio  = p1 / p2
  psecs  = ratio * elapsed_time.secs.to_f
  ptime  = M26::ElapsedTime.new(psecs)
  ptime.as_hhmmss
end

#maxpulse(age) ⇒ Object 



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# File 'lib/m26_age_grade.rb', line 43

def maxpulse(age)
  p = 220.0 - age
  p = 196.0 if p > 196.0  # age 24 is "peak" (220-24=196)
  p = 1.0   if p < 1
  p
end

#maxpulse1 ⇒ Object 



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# File 'lib/m26_age_grade.rb', line 35

def maxpulse1
  maxpulse(age1)
end

#maxpulse2 ⇒ Object 



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# File 'lib/m26_age_grade.rb', line 39

def maxpulse2
  maxpulse(age2)
end