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 5

def initialize(cluster:, shape:)
  @polylines_sequence = []
  @cluster = cluster
  @outer_polyline = shape.outer_polyline
  @orphan_inners = []
  @shapes = [shape]
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

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 45

def join_inners!(outer_seq)
  # search for missing sequence to sew
  missing_shapes = []
  @cluster.tiles.each do |tile|
    tile.shapes.each do |shape|
      next if shape.outer_polyline.on?(Polyline::TRACKED_OUTER) ||
        shape.outer_polyline.on?(Polyline::TRACKED_INNER) ||
        !shape.outer_polyline.boundary? ||
        @polylines_sequence.include?(shape.outer_polyline)
      missing_shapes << shape
    end
  end
  @polylines_sequence.each do |polyline|
    missing_shapes.each do |missing_shape|
      outer_polyline = missing_shape.outer_polyline
      if (intersection = polyline.intersection(outer_polyline)).any?
        inject_sequences_left, inject_sequences_right = polyline.sew!(intersection, outer_polyline)
        combine!(inject_sequences_right, inject_sequences_left).each do |sewn_sequence|
          sewn_sequence.uniq!
          @orphan_inners << sewn_sequence if sewn_sequence.size > 1 && sewn_sequence.map { |c| c[:x] }.uniq.size > 1 # segmenti non sono ammessi, solo aree
        end
        outer_polyline.clear!
        outer_polyline.turn_on(Polyline::TRACKED_OUTER)
        outer_polyline.turn_on(Polyline::TRACKED_INNER)
        @orphan_inners += missing_shape.inner_polylines
      end
    end
  end

  retme = collect_inner_sequences(outer_seq)

  @polylines_sequence.each do |polyline|
    polyline.turn_on(Polyline::TRACKED_INNER)
  end
  retme
end

#join_outers! ⇒ Object

Given the initial polyline, draw its outer boundary, possibly extending into adjacent polylines, and then connect them. At the end, @polylines_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 = []
  @polylines_sequence << @outer_polyline

  outer_joined_polyline = Sequence.new

  traverse_outer(@outer_polyline.parts.first,
    seq_log,
    @polylines_sequence,
    @shapes,
    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?

  @polylines_sequence.uniq!

  @polylines_sequence.each { |c| c.turn_on(Polyline::TRACKED_OUTER) }
  (@shapes - [@outer_polyline.shape]).each do |shape|
    @orphan_inners += shape.inner_polylines
    shape.clear_inner!
  end

  outer_joined_polyline
end