Class: Astronoby::RiseTransitSetCalculator

Inherits:
Object
  • Object
show all
Defined in:
lib/astronoby/events/rise_transit_set_calculator.rb

Defined Under Namespace

Classes: PotentialEvent

Constant Summary collapse

TAU = 
Math::PI * 2
SAMPLE_THRESHOLD = 
0.8
REFINEMENT_ITERATIONS = 
3
MIN_TIME_ADJUSTMENT = 
Constants::MICROSECOND_IN_DAYS
STANDARD_REFRACTION_ANGLE = 
-Angle.from_dms(0, 34, 0)
SUN_REFRACTION_ANGLE = 
-Angle.from_dms(0, 50, 0)
EVENT_TYPES = 
[:rising, :transit, :setting].freeze

Instance Method Summary collapse

Constructor Details

#initialize(body:, observer:, ephem: nil) ⇒ RiseTransitSetCalculator

Returns a new instance of RiseTransitSetCalculator.

Parameters:



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# File 'lib/astronoby/events/rise_transit_set_calculator.rb', line 30

def initialize(body:, observer:, ephem: nil)
  @body = body
  @observer = observer
  @ephem = ephem
end

Instance Method Details

#event_on(date, utc_offset: 0) ⇒ Object 



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# File 'lib/astronoby/events/rise_transit_set_calculator.rb', line 36

def event_on(date, utc_offset: 0)
  events = events_on(date, utc_offset: utc_offset)
  RiseTransitSetEvent.new(
    events.rising_times.first,
    events.transit_times.first,
    events.setting_times.first
  )
end

#events_between(start_time, end_time) ⇒ Object 



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# File 'lib/astronoby/events/rise_transit_set_calculator.rb', line 61

def events_between(start_time, end_time)
  reset_state
  @start_instant = Instant.from_time(start_time)
  @end_instant = Instant.from_time(end_time)
  events
end

#events_on(date, utc_offset: 0) ⇒ Object 



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# File 'lib/astronoby/events/rise_transit_set_calculator.rb', line 45

def events_on(date, utc_offset: 0)
  start_time = Time.new(
    date.year,
    date.month,
    date.day,
    0, 0, 0, utc_offset
  )
  end_time = Time.new(
    date.year,
    date.month,
    date.day,
    23, 59, 59, utc_offset
  )
  events_between(start_time, end_time)
end