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# encoding: ascii-8bit
# Copyright 2014 Ball Aerospace & Technologies Corp.
# All Rights Reserved.
#
# This program is free software; you can modify and/or redistribute it
# under the terms of the GNU General Public License
# as published by the Free Software Foundation; version 3 with
# attribution addendums as found in the LICENSE.txt
require 'cosmos/conversions/conversion'
require 'cosmos/ext/polynomial_conversion'
module Cosmos
# Performs a polynomial conversion on the value
class PolynomialConversion < Conversion
# @return [Array<Float>] The polynomial coefficients
attr_accessor :coeffs
# Initializes the conversion with the given polynomial coefficients. Sets
# the converted_type to :FLOAT and the converted_bit_size to 64.
#
# @param coeff_array [Array<Float>] The polynomial coefficients
def initialize(coeff_array)
super()
@coeffs = []
coeff_array.each do |coeff|
@coeffs << coeff.to_f
end
@converted_type = :FLOAT
@converted_bit_size = 64
end
# @param (see Conversion#call)
# @return [Float] The value with the polynomial applied
# def call(value, myself, buffer)
# @return [String] Class followed by the list of coefficients
def to_s
result = ""
@coeffs.length.times do |index|
if index == 0
result << "#{@coeffs[index]}"
elsif index == 1
result << " + #{@coeffs[index]}x"
else
result << " + #{@coeffs[index]}x^#{index}"
end
end
result
end
end # class PolynomialConversion
end # module Cosmos
Version data entries
21 entries across 21 versions & 1 rubygems