Хешове и keyword аргументи на блокове

Програмиране с Ruby

Курс във Факултета по Математика и Информатика към СУ

Решение на Шеста задача от Денис Михайлов

Обратно към всички решения

Към профила на Денис Михайлов

Резултати

  • 6 точки от тестове
  • 0 бонус точки
  • 6 точки общо
  • 14 успешни тест(а)
  • 0 неуспешни тест(а)

Код

module TurtleGraphics
module Canvas
end
end
class TurtleGraphics::Turtle
attr_reader :max_stepped, :canvas, :position, :orientation
ORIENTATIONS = {left: 0, up: 1, right: 2, down: 3}
def initialize(rows, columns)
@max_stepped = 0
@rows = rows
@columns = columns
@canvas = Array.new(rows) {|_| Array.new(columns, 0)}
@orientation = 2
@position = [0, 0]
end
def draw(canvas = nil)
instance_eval(&(proc)) if block_given?
mark_current_position
canvas ? canvas.transform(self) : @canvas
end
def spawn_at(row, column)
@position = [row, column]
end
def look(orientation)
@orientation = ORIENTATIONS[orientation]
end
def move
mark_current_position
case @orientation
when 0 then @position[1] = (@position[1] - 1) % @columns
when 1 then @position[0] = (@position[0] - 1) % @rows
when 2 then @position[1] = (@position[1] + 1) % @columns
else @position[0] = (@position[0] + 1) % @rows
end
end
def turn_right
@orientation = (@orientation + 1) % 4
end
def turn_left
@orientation = (@orientation - 1) % 4
end
private
def mark_current_position
current = (@canvas[@position.first][@position.last] += 1)
@max_stepped = current if current > @max_stepped
end
end
class TurtleGraphics::Canvas::ASCII
def initialize(symbols)
@symbols = symbols
end
def transform(turtle)
@ratio = (@symbols.size - 1).to_f / turtle.max_stepped
turtle.canvas.map do |row|
row.map {|steps| steps_to_ascii(steps)}.join()
end.join("\n")
end
private
def steps_to_ascii(steps)
index = (steps * @ratio).ceil
@symbols[index]
end
end
class TurtleGraphics::Canvas::HTML
def initialize(pixels)
@pixels = pixels
end
def transform(turtle)
"<!DOCTYPE html>
<html>
<head>
<title>Turtle graphics</title>
<style>
table {
border-spacing: 0;
}
tr {
padding: 0;
}
td {
width: #{@pixels}px;
height: #{@pixels}px;
background-color: black;
padding: 0;
}
</style>
</head>
<body>
<table>
#{table_content(turtle)}
</table>
</body>
</html>"
end
private
def table_content(turtle)
@max_stepped = turtle.max_stepped
turtle.canvas.map do |row|
"<tr>\n#{table_cells(row)}\n</tr>"
end.join("\n")
end
def table_cells(row)
row.map do |steps|
opacity = format('%.2f', steps.to_f / @max_stepped)
"<td style=\"opacity: #{opacity}\"></td>"
end.join("\n")
end
end

Лог от изпълнението

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Finished in 0.01199 seconds
14 examples, 0 failures

История (1 версия и 0 коментара)

Денис обнови решението на 02.12.2015 14:15 (преди над 8 години)

+module TurtleGraphics
+
+ module Canvas
+
+ end
+
+end
+
+class TurtleGraphics::Turtle
+ attr_reader :max_stepped, :canvas, :position, :orientation
+ ORIENTATIONS = {left: 0, up: 1, right: 2, down: 3}
+
+ def initialize(rows, columns)
+ @max_stepped = 0
+ @rows = rows
+ @columns = columns
+ @canvas = Array.new(rows) {|_| Array.new(columns, 0)}
+ @orientation = 2
+ @position = [0, 0]
+ end
+
+ def draw(canvas = nil)
+ instance_eval(&(proc)) if block_given?
+ mark_current_position
+ canvas ? canvas.transform(self) : @canvas
+ end
+
+ def spawn_at(row, column)
+ @position = [row, column]
+ end
+
+ def look(orientation)
+ @orientation = ORIENTATIONS[orientation]
+ end
+
+ def move
+ mark_current_position
+ case @orientation
+ when 0 then @position[1] = (@position[1] - 1) % @columns
+ when 1 then @position[0] = (@position[0] - 1) % @rows
+ when 2 then @position[1] = (@position[1] + 1) % @columns
+ else @position[0] = (@position[0] + 1) % @rows
+ end
+ end
+
+ def turn_right
+ @orientation = (@orientation + 1) % 4
+ end
+
+ def turn_left
+ @orientation = (@orientation - 1) % 4
+ end
+
+ private
+
+ def mark_current_position
+ current = (@canvas[@position.first][@position.last] += 1)
+ @max_stepped = current if current > @max_stepped
+ end
+
+end
+
+class TurtleGraphics::Canvas::ASCII
+
+ def initialize(symbols)
+ @symbols = symbols
+ end
+
+ def transform(turtle)
+ @ratio = (@symbols.size - 1).to_f / turtle.max_stepped
+ turtle.canvas.map do |row|
+ row.map {|steps| steps_to_ascii(steps)}.join()
+ end.join("\n")
+ end
+
+ private
+
+ def steps_to_ascii(steps)
+ index = (steps * @ratio).ceil
+ @symbols[index]
+ end
+
+end
+
+class TurtleGraphics::Canvas::HTML
+
+ def initialize(pixels)
+ @pixels = pixels
+ end
+
+ def transform(turtle)
+ "<!DOCTYPE html>
+ <html>
+ <head>
+ <title>Turtle graphics</title>
+
+ <style>
+ table {
+ border-spacing: 0;
+ }
+
+ tr {
+ padding: 0;
+ }
+
+ td {
+ width: #{@pixels}px;
+ height: #{@pixels}px;
+
+ background-color: black;
+ padding: 0;
+ }
+ </style>
+ </head>
+ <body>
+ <table>
+ #{table_content(turtle)}
+ </table>
+ </body>
+ </html>"
+ end
+
+ private
+
+ def table_content(turtle)
+ @max_stepped = turtle.max_stepped
+ turtle.canvas.map do |row|
+ "<tr>\n#{table_cells(row)}\n</tr>"
+ end.join("\n")
+ end
+
+ def table_cells(row)
+ row.map do |steps|
+ opacity = format('%.2f', steps.to_f / @max_stepped)
+ "<td style=\"opacity: #{opacity}\"></td>"
+ end.join("\n")
+ end
+
+end