Class: Wallbum::ImagePacking::Rectangle

Inherits:
Object
  • Object
show all
Defined in:
lib/wallbum/rectangle.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(parent, x, y, width, height) ⇒ Rectangle

Returns a new instance of Rectangle.



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# File 'lib/wallbum/rectangle.rb', line 14

def initialize(parent, x, y, width, height)
  @parent = parent
  @width = width
  @height = height
  @x = x
  @y = y
  @children = []
  @image = nil
end

Instance Attribute Details

#children ⇒ Object (readonly)

Returns the value of attribute children.



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# File 'lib/wallbum/rectangle.rb', line 11

def children
  @children
end

#height ⇒ Object (readonly)

Returns the value of attribute height.



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# File 'lib/wallbum/rectangle.rb', line 10

def height
  @height
end

#image ⇒ Object

Returns the value of attribute image.



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# File 'lib/wallbum/rectangle.rb', line 12

def image
  @image
end

#width ⇒ Object (readonly)

Returns the value of attribute width.



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# File 'lib/wallbum/rectangle.rb', line 9

def width
  @width
end

#x ⇒ Object (readonly)

Returns the value of attribute x.



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# File 'lib/wallbum/rectangle.rb', line 7

def x
  @x
end

#y ⇒ Object (readonly)

Returns the value of attribute y.



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# File 'lib/wallbum/rectangle.rb', line 8

def y
  @y
end

Instance Method Details

#all_children ⇒ Object 



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# File 'lib/wallbum/rectangle.rb', line 40

def all_children
  if leaf?
    self
  else
    @children.collect(&:all_children).flatten
  end
end

#area ⇒ Object 



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# File 'lib/wallbum/rectangle.rb', line 36

def area
  @width * @height
end

#child_count ⇒ Object 



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# File 'lib/wallbum/rectangle.rb', line 48

def child_count
  if leaf?
    1
  else
    @children.map(&:child_count).reduce(:+)
  end
end

#empty? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/wallbum/rectangle.rb', line 32

def empty?
  @image.nil?
end

#empty_child ⇒ Object 



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# File 'lib/wallbum/rectangle.rb', line 64

def empty_child
  if leaf? 
    if empty?
      self
    else
      nil
    end
  else
    @children.map(&:empty_child).compact.first
  end
end

#largest_child ⇒ Object 



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# File 'lib/wallbum/rectangle.rb', line 56

def largest_child
  if leaf?
    self
  else
    @children.map(&:largest_child).sort_by { |rect| rect.area }.last
  end
end

#leaf? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/wallbum/rectangle.rb', line 24

def leaf?
  @children.empty?
end

#root? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/wallbum/rectangle.rb', line 28

def root?
  @parent.nil?
end

#split ⇒ Object 



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# File 'lib/wallbum/rectangle.rb', line 76

def split
  if @width > @height
    split_horz
  else
    split_vert
  end
end