Стефан обнови решението на 17.12.2013 02:46 (преди почти 11 години)
+ html_top = "<!DOCTYPE html>
+ <html>
+ <head>
+ <title>Rendered Canvas</title>
+ <style type=\"text/css\">
+ .canvas {
+ font-size: 1px;
+ line-height: 1px;
+ }
+ .canvas * {
+ display: inline-block;
+ width: 10px;
+ height: 10px;
+ border-radius: 5px;
+ }
+ .canvas i {
+ background-color: #eee;
+ }
+ .canvas b {
+ background-color: #333;
+ }
+ </style>
+ </head>
+ <body>
+ <div class=\"canvas\">"
+
+html_end = "</div>
+ </body>
+ </html>"
+
+module Graphics
+ class Renderers
+ class Ascii
+ def initialize(canvas)
+ @canvas = canvas
+ end
+ def render
+ output = ""
+ @canvas.pixels.each_index do |index|
+ output << (@canvas.pixels[index] == true ? "@" : "-")
+ output << "\n" if ((index + 1).remainder (@canvas.height)) == 0
+ end
+ output
+ end
+ end
+
+ class Html
+
+ def initialize(canvas)
+ @canvas = canvas
+ @code = ["<!DOCTYPE html>
+ <html>
+ <head>
+ <title>Rendered Canvas</title>
+ <style type=\"text/css\">
+ .canvas {
+ font-size: 1px;
+ line-height: 1px;
+ }
+ .canvas * {
+ display: inline-block;
+ width: 10px;
+ height: 10px;
+ border-radius: 5px;
+ }
+ .canvas i {
+ background-color: #eee;
+ }
+ .canvas b {
+ background-color: #333;
+ }
+ </style>
+ </head>
+ <body>
+ <div class=\"canvas\">", " </div>
+ </body>
+</html>"]
+ end
+ def render
+ output = @code[0]
+ @canvas.pixels.each_index do |index|
+ output << (@canvas.pixels[index] == true ? "<b></b>" : "<i></i>")
+ output << "<br/>\n" if ((index + 1).remainder (@canvas.height)) == 0
+ end
+ output << @code[1]
+ end
+ end
+ end
+
+ class Canvas
+ attr_reader :width, :height, :pixels
+
+ def initialize(width, height)
+ @width = width
+ @height = height
+ @pixels = []
+ (width * height).times { @pixels << false }
+ end
+
+ def set_pixel(x, y)
+ @pixels[x + height * y] = true
+ end
+
+ def pixel_at?(x, y)
+ @pixels[x + height * y] == true
+ end
+
+ def draw(shape)
+ shape.points.each do |point|
+ set_pixel point.x, point.y
+ end
+ end
+
+ def render_as(symbols)
+ (symbols.new self).render
+ end
+ end
+
+ class Point
+ attr_reader :x, :y
+
+ def initialize(x, y)
+ @x = x
+ @y = y
+ end
+
+ def points
+ [(Point.new x, y)]
+ end
+
+ def ==(other_point)
+ x == other_point.x and y == other_point.y
+ end
+
+ def eql?(other_point)
+ self.== other_point
+ end
+ end
+
+ class Line
+ attr_reader :from, :to
+
+ def initialize(from, to)
+ @from = from
+ @to = to
+ end
+
+ def points(left = from, right = to, result = [left, right])
+ return result if (left.x - right.x).abs <= 1 and (left.y - right.y).abs <= 1
+ result << (Point.new (left.x + right.x) / 2, (left.y + right.y) / 2)
+ points(left, (Point.new (left.x + right.x) / 2, (left.y + right.y) / 2), result)
+ points((Point.new (left.x + right.x) / 2, (left.y + right.y) / 2), right, result)
+ end
+
+ def ==(other_line)
+ from == other_point.from and to == other_point.to
+ end
+
+ def eql?(other_line)
+ self.== other_point
+ end
+ end
+
+ class Rectangle
+ attr_reader :top_left, :bottom_right
+
+ def initialize(top_left, bottom_right)
+ @top_left = top_left
+ @bottom_right = bottom_right
+ end
+
+ def top_right
+ Point.new bottom_right.x, top_left.y
+ end
+
+ def bottom_left
+ Point.new top_left.x, bottom_right.y
+ end
+
+ def left
+ @top_left
+ end
+
+ def right
+ @top_right
+ end
+
+ def points
+ [(Line.new top_left, top_right).points,
+ (Line.new top_left, bottom_left).points,
+ (Line.new top_right, bottom_right).points,
+ (Line.new bottom_left, bottom_right).points].flatten
+ end
+
+ def ==(rectangle)
+ top_left == rectangle.top_left and bottom_right == rectangle.bottom_right
+ end
+
+ def eql?(rectangle)
+ self.== rectangle
+ end
+ end
+end
+
+#canvas = Graphics::Canvas.new 5, 5
+
+#canvas.set_pixel(0, 0)
+#canvas.set_pixel(1, 1)
+#canvas.set_pixel(2, 1)
+#canvas.set_pixel(3, 0)
+
+#canvas.draw Graphics::Point.new 4, 0
+
+
+#a = Graphics::Renderers::Ascii
+#p a.symbols
+
+#point_1 = Graphics::Point.new 3, 3#2,1#1, 4#2, 4#1, 4
+#point_2 = Graphics::Point.new 1, 1#2,4#12, 9#4, 4#12, 9
+
+#p point_2.eql? point_1
+
+#neka_a_e_liniqta = Graphics::Line.new point_1, point_2
+#p neka_a_e_liniqta.points.size
+#canvas.draw(neka_a_e_liniqta)
+
+#puts canvas.render_as(Graphics::Renderers::Ascii)
+
+
+#a = Graphics::Renderers::Ascii.new
+#p a.symbols
+
+canvas = Graphics::Canvas.new 30, 30
+
+# Door frame and window
+canvas.draw Graphics::Rectangle.new(Graphics::Point.new(3, 3), Graphics::Point.new(1, 1))
+canvas.draw Graphics::Rectangle.new(Graphics::Point.new(1, 1), Graphics::Point.new(2, 2))
+
+# Door knob
+canvas.draw Graphics::Line.new(Graphics::Point.new(4, 15), Graphics::Point.new(7, 15))
+canvas.draw Graphics::Point.new(4, 16)
+
+# Big "R"
+canvas.draw Graphics::Line.new(Graphics::Point.new(8, 5), Graphics::Point.new(8, 10))
+canvas.draw Graphics::Line.new(Graphics::Point.new(9, 5), Graphics::Point.new(12, 5))
+canvas.draw Graphics::Line.new(Graphics::Point.new(9, 7), Graphics::Point.new(12, 7))
+canvas.draw Graphics::Point.new(13, 6)
+canvas.draw Graphics::Line.new(Graphics::Point.new(12, 8), Graphics::Point.new(13, 10))
+
+puts canvas.render_as(Graphics::Renderers::Html)
+
+ #a = Graphics::Renderers::Ascii
+ #p a