Module: AstroChart::Planets

Defined in:
lib/astro_chart/planets.rb

Class Method Summary collapse

Class Method Details

.aspects_for(point_pos, point_name, positions) ⇒ Object

Calculate aspects for a given point against all planet positions.



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# File 'lib/astro_chart/planets.rb', line 35

def self.aspects_for(point_pos, point_name, positions)
  return [] if point_pos.nil?

  results = []
  positions.each do |planet, pos|
    next if planet == point_name

    aspect_type, orb = Aspects.calculate(point_pos, pos)
    if aspect_type
      results << {
        "planet"      => planet,
        "aspect_type" => aspect_type,
        "orb"         => orb,
      }
    end
  end
  results
end

.build_details(positions, cusps) ⇒ Object

Build detailed planet info list with zodiac, house, degree.



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# File 'lib/astro_chart/planets.rb', line 19

def self.build_details(positions, cusps)
  positions.map do |planet, pos|
    house = Houses.find_house(pos, cusps)
    next if house.nil?

    {
      "planet"       => planet,
      "zodiac"       => Zodiac.sign_name(pos),
      "house"        => house,
      "degree"       => (pos % 30).round(4),
      "total_degree" => pos.round(4),
    }
  end.compact
end

.build_ruler_point(label, ruling_planet, pos, cusps, positions) ⇒ Object 



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# File 'lib/astro_chart/planets.rb', line 110

def self.build_ruler_point(label, ruling_planet, pos, cusps, positions)
  {
    "planet"        => label,
    "ruling_planet" => ruling_planet,
    "zodiac"        => Zodiac.sign_name(pos),
    "house"         => Houses.find_house(pos, cusps),
    "degree"        => (pos % 30).round(4),
    "total_degree"  => pos.round(4),
    "aspects"       => aspects_for(pos, ruling_planet, positions),
  }
end

.calculate_positions(jd) ⇒ Object

Calculate raw ecliptic longitudes for all planets + nodes. Returns Hash: { “太陽” => 123.45, “月亮” => 67.89, … }



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# File 'lib/astro_chart/planets.rb', line 5

def self.calculate_positions(jd)
  positions = {}

  Ephemeris::PLANETS.each do |name, planet_id|
    positions[name] = Ephemeris.calc_ut(jd, planet_id)
  end

  # South node = North node + 180
  positions["南交點"] = (positions["北交點"] + 180.0) % 360.0

  positions
end

.key_points_data(positions, cusps, ascendant) ⇒ Object

Calculate key points data: aspects for major planets + ruler info.



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# File 'lib/astro_chart/planets.rb', line 55

def self.key_points_data(positions, cusps, ascendant)
  sun_aspects         = aspects_for(positions["太陽"],  "太陽",  positions)
  moon_aspects        = aspects_for(positions["月亮"],  "月亮",  positions)
  saturn_aspects      = aspects_for(positions["土星"],  "土星",  positions)
  venus_aspects       = aspects_for(positions["金星"],  "金星",  positions)
  north_node_aspects  = aspects_for(positions["北交點"], "北交點", positions)
  south_node_aspects  = aspects_for(positions["南交點"], "南交點", positions)

  additional_points = []

  # North Node ruler
  nn_pos = positions["北交點"]
  if nn_pos
    nn_zodiac = Zodiac.sign_name(nn_pos)
    nn_ruler  = Zodiac.ruler(nn_zodiac)
    nn_ruler_pos = positions[nn_ruler]
    if nn_ruler_pos
      additional_points << build_ruler_point("北交點定位星", nn_ruler, nn_ruler_pos, cusps, positions)
    end
  end

  # South Node ruler
  sn_pos = positions["南交點"]
  if sn_pos
    sn_zodiac = Zodiac.sign_name(sn_pos)
    sn_ruler  = Zodiac.ruler(sn_zodiac)
    sn_ruler_pos = positions[sn_ruler]
    if sn_ruler_pos
      additional_points << build_ruler_point("南交點定位星", sn_ruler, sn_ruler_pos, cusps, positions)
    end
  end

  # Ascendant ruler
  if ascendant
    asc_zodiac = Zodiac.sign_name(ascendant)
    asc_ruler  = Zodiac.ruler(asc_zodiac)
    asc_ruler_pos = positions[asc_ruler]
    if asc_ruler_pos
      additional_points << build_ruler_point("上升星座定位星", asc_ruler, asc_ruler_pos, cusps, positions)
    end
  end

  {
    "sun_aspects"        => sun_aspects,
    "moon_aspects"       => moon_aspects,
    "saturn_aspects"     => saturn_aspects,
    "venus_aspects"      => venus_aspects,
    "north_node_aspects" => north_node_aspects,
    "south_node_aspects" => south_node_aspects,
    "additional_points"  => additional_points,
  }
end