Class: Contrek::Concurrent::Cursor

Inherits:
Object
  • Object
show all
Defined in:
lib/contrek/finder/concurrent/cursor.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(cluster:, shape:) ⇒ Cursor

Returns a new instance of Cursor.



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# File 'lib/contrek/finder/concurrent/cursor.rb', line 6

def initialize(cluster:, shape:)
  @shapes_sequence = Set.new([shape])
  @cluster = cluster
  @outer_polyline = shape.outer_polyline
  @orphan_inners = []
end

Instance Attribute Details

#orphan_inners ⇒ Object (readonly)

Returns the value of attribute orphan_inners.



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# File 'lib/contrek/finder/concurrent/cursor.rb', line 4

def orphan_inners
  @orphan_inners
end

#shapes_sequence ⇒ Object (readonly)

Returns the value of attribute shapes_sequence.



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# File 'lib/contrek/finder/concurrent/cursor.rb', line 4

def shapes_sequence
  @shapes_sequence
end

Instance Method Details

#inspect ⇒ Object 



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# File 'lib/contrek/finder/concurrent/cursor.rb', line 13

def inspect
  self.class
end

#join_inners!(outer_seq) ⇒ Object 



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# File 'lib/contrek/finder/concurrent/cursor.rb', line 41

def join_inners!(outer_seq)
  return_inner_polylines = []

  @processing_shapes = @shapes_sequence.to_a

  @processing_shapes.each do |shape|
    polyline = shape.outer_polyline
    polyline.parts.each do |part|
      if part.innerable?
        all_parts = []
        bounds = {min: polyline.max_y, max: 0}
        traverse_inner(part, all_parts, bounds)
        range_of_bounds = (bounds[:min]..bounds[:max])

        retme_sequence = Sequence.new
        all_parts.each do |part|
          part.touch!
          retme_sequence.move_from(part) do |position|
            next false if part.is?(Part::ADDED) && !(range_of_bounds === position.payload[:y])

            !(polyline.tile.tg_border?(position.payload) && position.end_point.tracked_outer)
          end
        end
        if retme_sequence.is_not_vertical
          return_inner_polylines << InnerPolyline.new(sequence: retme_sequence)
        end
      end
    end
  end
  return_inner_polylines
end

#join_outers! ⇒ Object

Given the initial polyline, draw its outer boundary, possibly extending into adjacent polylines, and then connect them. At the end, @shapes_sequence contains the merged polylines. Returns a new resulting polyline.



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# File 'lib/contrek/finder/concurrent/cursor.rb', line 20

def join_outers!
  seq_log = []

  outer_joined_polyline = Sequence.new
  traverse_outer(@outer_polyline.parts.first,
    seq_log,
    @shapes_sequence,
    outer_joined_polyline)
  outer_joined_polyline.pop! if outer_joined_polyline.head.payload == outer_joined_polyline.tail.payload &&
    @cluster.tiles.first.left? && @cluster.tiles.last.right?

  @shapes_sequence.each do |shape|
    shape.outer_polyline.turn_on(Polyline::TRACKED_OUTER)
    next if shape == @outer_polyline.shape
    @orphan_inners += shape.inner_polylines
    shape.clear_inner!
  end

  outer_joined_polyline
end