Хешове и keyword аргументи на блокове

Програмиране с Ruby

Курс във Факултета по Математика и Информатика към СУ

Решение на Шеста задача от Мариян Борисов

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Към профила на Мариян Борисов

Резултати

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

Код

module TurtleGraphics
class Turtle
ORIENTATIONS = %i(left up right down)
MOVE_VECTORS = [{x: -1, y: 0}, {x: 0, y: -1}, {x: 1, y: 0}, {x: 0, y: 1}]
def initialize(rows, columns)
@canvas_size = {x: columns, y: rows}
@orientation = ORIENTATIONS.index :right
@position = {x: 0, y: 0}
@turtle_steps = Array.new(rows) { Array.new(columns, 0) }
@turtle_steps[0][0] = 1
end
def draw(canvas = nil, &block)
instance_eval &block if block_given?
return @turtle_steps.dup if canvas.nil?
max = @turtle_steps.flatten.max
intensities = @turtle_steps.map do |row|
row.map { |times_visited| times_visited.to_f / max }
end
canvas.draw(intensities)
end
def move
[:x, :y].each do |axis|
@position[axis] += MOVE_VECTORS[@orientation][axis]
@position[axis] += @canvas_size[axis]
@position[axis] %= @canvas_size[axis]
end
@turtle_steps[@position[:y]][@position[:x]] += 1
end
def turn_left
@orientation += ORIENTATIONS.size - 1
@orientation %= ORIENTATIONS.size
end
def turn_right
@orientation += 1
@orientation %= ORIENTATIONS.size
end
def spawn_at(row, column)
@position[:x], @position[:y] = column, row
@turtle_steps[0][0] = 0
@turtle_steps[row][column] = 1
end
def look(orientation)
@orientation = ORIENTATIONS.index orientation
end
end
module Canvas
class ASCII
def initialize(symbols)
@symbols = symbols
end
def draw(intensities)
intensities.map do |row|
row.map { |intensity| @symbols[to_index(intensity)] }.join
end.join "\n"
end
private
def to_index(intensity)
return 0 if intensity == 0
range = 1.0 / (@symbols.size - 1)
quotient = intensity / range
unless quotient % 1 == 0
quotient += 1
end
quotient.to_i
end
end
class HTML
def initialize(pixel_size)
@pixel_size = pixel_size
end
def draw(intensities)
<<-HTML.gsub(/^ {10}/, '').chomp
<!DOCTYPE html>
<html>
<head>
<title>Turtle graphics</title>
<style>
table {
border-spacing: 0;
}
tr {
padding: 0;
}
td {
width: #{@pixel_size}px;
height: #{@pixel_size}px;
background-color: black;
padding: 0;
}
</style>
</head>
<body>
<table>
#{print_rows(intensities)}
</table>
</body>
</html>
HTML
end
private
def print_rows(intensities)
intensities.map do |row|
<<-HTML.gsub(/^ {12}/, '').chomp
<tr>
#{print_columns(row)}
</tr>
HTML
end.join "\n"
end
def print_columns(row)
row.map do |column|
' <td style="opacity: %.2f"></td>' % column
end.join "\n"
end
end
end
end

Лог от изпълнението

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Finished in 0.01233 seconds
14 examples, 0 failures

История (1 версия и 0 коментара)

Мариян обнови решението на 02.12.2015 00:48 (преди около 9 години)

+module TurtleGraphics
+ class Turtle
+ ORIENTATIONS = %i(left up right down)
+ MOVE_VECTORS = [{x: -1, y: 0}, {x: 0, y: -1}, {x: 1, y: 0}, {x: 0, y: 1}]
+
+ def initialize(rows, columns)
+ @canvas_size = {x: columns, y: rows}
+ @orientation = ORIENTATIONS.index :right
+ @position = {x: 0, y: 0}
+ @turtle_steps = Array.new(rows) { Array.new(columns, 0) }
+ @turtle_steps[0][0] = 1
+ end
+
+ def draw(canvas = nil, &block)
+ instance_eval &block if block_given?
+ return @turtle_steps.dup if canvas.nil?
+ max = @turtle_steps.flatten.max
+ intensities = @turtle_steps.map do |row|
+ row.map { |times_visited| times_visited.to_f / max }
+ end
+ canvas.draw(intensities)
+ end
+
+ def move
+ [:x, :y].each do |axis|
+ @position[axis] += MOVE_VECTORS[@orientation][axis]
+ @position[axis] += @canvas_size[axis]
+ @position[axis] %= @canvas_size[axis]
+ end
+ @turtle_steps[@position[:y]][@position[:x]] += 1
+ end
+
+ def turn_left
+ @orientation += ORIENTATIONS.size - 1
+ @orientation %= ORIENTATIONS.size
+ end
+
+ def turn_right
+ @orientation += 1
+ @orientation %= ORIENTATIONS.size
+ end
+
+ def spawn_at(row, column)
+ @position[:x], @position[:y] = column, row
+ @turtle_steps[0][0] = 0
+ @turtle_steps[row][column] = 1
+ end
+
+ def look(orientation)
+ @orientation = ORIENTATIONS.index orientation
+ end
+ end
+
+ module Canvas
+ class ASCII
+ def initialize(symbols)
+ @symbols = symbols
+ end
+
+ def draw(intensities)
+ intensities.map do |row|
+ row.map { |intensity| @symbols[to_index(intensity)] }.join
+ end.join "\n"
+ end
+
+ private
+ def to_index(intensity)
+ return 0 if intensity == 0
+ range = 1.0 / (@symbols.size - 1)
+ quotient = intensity / range
+ unless quotient % 1 == 0
+ quotient += 1
+ end
+ quotient.to_i
+ end
+ end
+
+ class HTML
+ def initialize(pixel_size)
+ @pixel_size = pixel_size
+ end
+
+ def draw(intensities)
+ <<-HTML.gsub(/^ {10}/, '').chomp
+ <!DOCTYPE html>
+ <html>
+ <head>
+ <title>Turtle graphics</title>
+
+ <style>
+ table {
+ border-spacing: 0;
+ }
+
+ tr {
+ padding: 0;
+ }
+
+ td {
+ width: #{@pixel_size}px;
+ height: #{@pixel_size}px;
+
+ background-color: black;
+ padding: 0;
+ }
+ </style>
+ </head>
+ <body>
+ <table>
+ #{print_rows(intensities)}
+ </table>
+ </body>
+ </html>
+ HTML
+ end
+
+ private
+ def print_rows(intensities)
+ intensities.map do |row|
+ <<-HTML.gsub(/^ {12}/, '').chomp
+ <tr>
+ #{print_columns(row)}
+ </tr>
+ HTML
+ end.join "\n"
+ end
+
+ def print_columns(row)
+ row.map do |column|
+ ' <td style="opacity: %.2f"></td>' % column
+ end.join "\n"
+ end
+ end
+ end
+end