Class: PavementConditionIndex::Lookups::DeductValues

Inherits:
Object
  • Object
show all
Defined in:
lib/pavement_condition_index/lookups/deduct_values.rb

Instance Method Summary collapse

Constructor Details

#initialize(pavement_type: nil, severity: nil, distress_type: nil) ⇒ DeductValues

Returns a new instance of DeductValues.



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# File 'lib/pavement_condition_index/lookups/deduct_values.rb', line 5

def initialize(pavement_type:nil,severity:nil,distress_type:nil)
  @pavement_type = pavement_type
  @severity = severity
  @distress_type = distress_type
end

Instance Method Details

#call(value) ⇒ Object 



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# File 'lib/pavement_condition_index/lookups/deduct_values.rb', line 11

def call(value)
  deduct = PavementConditionIndex::Lookups::CalculatedDeductCoefficients::COEFFICIENTS[@pavement_type][@distress_type]
  coefficients = deduct[:coefficients][@severity]
  value = value.clamp(deduct[:valid_min],deduct[:valid_max])
  # Asphalt charts use logarithmic scale, concrete uses linear
  value = deduct[:chart_type] == :log ? Math.log10(value.to_f) : value.to_f
  return evaluate_polynomial(*coefficients).call(value).clamp(0.0,100.0)
end