Class: ASCIIPlot

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

Constant Summary collapse

DOT = 
'.'
EMPTY = 
' '
X_AXIS = 
'-'
Y_AXIS = 
'|'

Instance Method Summary collapse

Constructor Details

#initialize(x_start, x_end, y_start, y_end) ⇒ ASCIIPlot

Returns a new instance of ASCIIPlot.



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# File 'lib/ascii_plot.rb', line 8

def initialize(x_start, x_end, y_start, y_end)
  @x_start = x_start
  @x_end = x_end
  @y_start = y_start
  @y_end = y_end
end

Instance Method Details

#plot(point_list) ⇒ Object 



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# File 'lib/ascii_plot.rb', line 15

def plot(point_list)
  output = ''
  @y_end.downto(@y_start).each do |y|
    (@x_start..@x_end).each do |x|
      if point_list.include?([x,y])
        output << DOT
      elsif x == 0
        output << Y_AXIS
      elsif y == 0
        output << X_AXIS
      else
        output << EMPTY
      end
    end
    output << "\n"
  end
  output
end