Method: Grid#minmax

Defined in:
lib/cem/cruzzles.rb

#minmax(null = nil) ⇒ Object

Finds the top-left (min), bottom-right (max) coordinates of this Grid using the given value ‘null’ as an indicator for an empty field.



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# File 'lib/cem/cruzzles.rb', line 360

def minmax(null=nil)
  min = nil
  max = nil
  
  @data.each_with_index { |l, y|
    l.each_with_index { |c, x|
     
      if c != null
        if min == nil || max == nil
          min = max = Point2D.new(x,y)
        end
        min = Point2D.new([min.x, x].min, [min.y, y].min)
        max = Point2D.new([max.x, x].max, [min.y, y].max)
      end
    }
  }
  
  return min, max
end