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Contents
# frozen_string_literal: true
require_relative '../../../../calculation/stella/lunar/abstract_location'
require_relative '../../const/remainder'
require_relative './localization'
# :nodoc:
module Zakuro
# :nodoc:
module Daien
# :nodoc:
module Lunar
#
# Location 入暦
#
class Location < Calculation::Lunar::AbstractLocation
# @return [Cycle::LunarRemainder] 1近点月
ANOMALISTIC_MONTH = Const::Remainder::Lunar::ANOMALISTIC_MONTH
# @return [Cycle::LunarRemainder] 弦
QUARTER = Const::Remainder::Lunar::QUARTER
#
# 初期化
#
# @param [Cycle::LunarRemainder] lunar_age 天正閏余（大余小余）
# @param [Integer] western_year 西暦年
#
def initialize(lunar_age:, western_year:)
super(lunar_age: lunar_age, western_year: western_year)
end
#
# 入暦を計算する
#
def run
if calculated
decrease(limit: ANOMALISTIC_MONTH)
return
end
first
end
#
# 弦の分だけ月地点を進める
#
def add_quarter
remainder.add!(QUARTER)
end
private
#
# 初回計算
#
def first
@remainder = Localization.first_remainder(
lunar_age: remainder, western_year: western_year
)
decrease(limit: ANOMALISTIC_MONTH)
@calculated = true
end
#
# 大余小余に合わせて減算する（折り返す）
#
# @param [Cycle::LunarRemainder] limit 上限
#
def decrease(limit:)
return if remainder < limit
remainder.sub!(limit)
end
end
end
end
end
Version data entries
9 entries across 9 versions & 1 rubygems