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kanjivg2svg.rb
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kanjivg2svg.rb
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# Encoding: UTF-8
# By: Kim Ahlström <[email protected]>
# License: Creative Commons Attribution-Share Alike 3.0 - http://creativecommons.org/licenses/by-sa/3.0/
# KanjiVG is copyright (c) 2009/2010 Ulrich Apel and released under the Creative Commons Attribution-Share Alike 3.0
require 'rubygems'
require 'rsvg2'
require 'nokogiri'
require 'pp'
class Importer
class KanjiVG
WIDTH = 109 # 109 per character
HEIGHT = 109 # 109 per character
SVG_HEAD = "<svg width=\"__WIDTH__px\" height=\"__HEIGHT__px\" viewBox=\"0 0 __VIEW_WIDTH__px __VIEW_HEIGHT__px\" xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" xml:space=\"preserve\" version=\"1.1\" baseProfile=\"full\">"
SVG_FOOT = '</svg>'
TEXT_STYLE = 'fill:#FF2A00;font-family:Helvetica;font-weight:normal;font-size:14;stroke-width:0'
CURRENT_PATH_STYLE = 'fill:none;stroke:black;stroke-width:3'
EXISTING_PATH_STYLE = 'fill:none;stroke:#999;stroke-width:3'
BOUDING_BOX_STYLE = 'stroke:#ddd;stroke-width:2'
GUIDE_LINE_STYLE = 'stroke:#ddd;stroke-width:2;stroke-dasharray:3 3'
ENTRY_NAME = 'svg'
COORD_RE = /-?\d+(?:\.\d+)?(?:[eE][+-]?\d+)?/ #/(?:\d+(?:\.\d+)?)/ #%r{(?ix:\d+ (?:\.\d+)?)}
def initialize(doc, output_dir, type = :numbers)
@output_dir = output_dir
@type = type
# Don't want Nokogiri to read in the entire document at once
# So doing it entry by entry
tmp = ""
begin
while (line = doc.readline)
if line =~ /<#{ENTRY_NAME}/
tmp = line
elsif line =~ /<\/#{ENTRY_NAME}>/
tmp << line
noko = Nokogiri::XML(tmp)
parse(noko)
else
tmp << line
end
end
rescue EOFError
doc.close
end
end
private
def parse(doc)
codepoint = nil
entry = doc.css('g')[1]
if entry['kvg:element'].nil?
codepoint = entry['id'].split(':')[1].to_i(16) # get it from the id="kvg:0abcd"
else
codepoint = entry['kvg:element'].codepoints.first
end
#svg = File.open("#{@output_dir}/#{codepoint}_#{@type}.svg", File::RDWR|File::TRUNC|File::CREAT)
svg = ""
stroke_count = 0
stroke_total = entry.css('path[d]').length
paths = []
fives, rest = stroke_total.divmod(5)
# Generate the header
if @type == :frames
t = (stroke_total > 5) ? 5 : stroke_total
width = (WIDTH * t)# + (2 * (stroke_total - 1))
view_width = width
height = rest == 0 ? HEIGHT * fives : HEIGHT * (fives+1)
view_height = height
else
width = WIDTH * 1
end
header = SVG_HEAD.gsub('__WIDTH__', width.to_s)
header = header.gsub('__VIEW_WIDTH__', view_width.to_s)
header = header.gsub('__HEIGHT__', height.to_s)
header = header.gsub('__VIEW_HEIGHT__', view_height.to_s)
svg << "#{header}\n"
# Guide lines
if @type == :frames
# outside box
svg << line(1, 1, width - 1, 1, BOUDING_BOX_STYLE) # top
svg << line(1, 1, 1, height - 1, BOUDING_BOX_STYLE) # left
svg << line(1, height - 1, WIDTH * rest - 1, height - 1, BOUDING_BOX_STYLE) # bottom
#svg << line(WIDTH * rest - 1, top, WIDTH * rest - 1, bottom, BOUDING_BOX_STYLE) # right
# line separators
(1 .. fives).each do |i|
# draw horizontal lines for a 5er row
svg << line(1, HEIGHT * i - 1, width - 1, HEIGHT * i - 1, BOUDING_BOX_STYLE)
end
fives, rest = stroke_total.divmod(5)
(0 .. fives-1).each do |i|
# vertical lines for a 5er row
svg << line(WIDTH * 1 - 1, HEIGHT * i - 1, WIDTH * 1 - 1, HEIGHT * (i+1) - 1, BOUDING_BOX_STYLE)
svg << line(WIDTH * 2 - 1, HEIGHT * i - 1, WIDTH * 2 - 1, HEIGHT * (i+1) - 1, BOUDING_BOX_STYLE)
svg << line(WIDTH * 3 - 1, HEIGHT * i - 1, WIDTH * 3 - 1, HEIGHT * (i+1) - 1, BOUDING_BOX_STYLE)
svg << line(WIDTH * 4 - 1, HEIGHT * i - 1, WIDTH * 4 - 1, HEIGHT * (i+1) - 1, BOUDING_BOX_STYLE)
svg << line(WIDTH * 5 - 1, HEIGHT * i - 1, WIDTH * 5 - 1, HEIGHT * (i+1) - 1, BOUDING_BOX_STYLE)
# horizontal grid lines
svg << line(1, (HEIGHT/2)*(2*i+1), width - 1, (HEIGHT/2)*(2*i+1), GUIDE_LINE_STYLE)
end
# vertical grid lines
svg << line((WIDTH/2)+(WIDTH * 0)+1, 1, (WIDTH/2)+(WIDTH * 0)+1, HEIGHT * fives, GUIDE_LINE_STYLE)
svg << line((WIDTH/2)+(WIDTH * 1)+1, 1, (WIDTH/2)+(WIDTH * 1)+1, HEIGHT * fives, GUIDE_LINE_STYLE)
svg << line((WIDTH/2)+(WIDTH * 2)+1, 1, (WIDTH/2)+(WIDTH * 2)+1, HEIGHT * fives, GUIDE_LINE_STYLE)
svg << line((WIDTH/2)+(WIDTH * 3)+1, 1, (WIDTH/2)+(WIDTH * 3)+1, HEIGHT * fives, GUIDE_LINE_STYLE)
svg << line((WIDTH/2)+(WIDTH * 4)+1, 1, (WIDTH/2)+(WIDTH * 4)+1, HEIGHT * fives, GUIDE_LINE_STYLE)
(1 .. rest).each do |i|
# vertical lines for last row
svg << line(WIDTH * i - 1, HEIGHT * fives - 1, WIDTH * i - 1, HEIGHT * (fives+1) - 1, BOUDING_BOX_STYLE)
# vertical grid lines for last row
svg << line((WIDTH/2)+(WIDTH * (i-1))+1, HEIGHT * fives, (WIDTH/2)+(WIDTH * (i-1))+1, height - 1, GUIDE_LINE_STYLE)
end
# last horizontal grid line
svg << line(1, (HEIGHT/2)*(2*fives+1), WIDTH * rest - 1, (HEIGHT/2)*(2*fives+1), GUIDE_LINE_STYLE)
end
# Draw the strokes
entry.css('path[d]').each do |stroke|
paths << stroke['d']
stroke_count += 1
case @type
when :animated
svg << "<path d=\"#{stroke['d']}\" style=\"#{CURRENT_PATH_STYLE};opacity:0\">\n"
svg << " <animate attributeType=\"CSS\" attributeName=\"opacity\" from=\"0\" to=\"1\" begin=\"#{stroke_count-1}s\" dur=\"1s\" repeatCount=\"0\" fill=\"freeze\" />\n"
svg << "</path>\n"
when :numbers
x, y = move_text_relative_to_path(stroke['d'])
svg << "<text x=\"#{x}\" y=\"#{y}\" style=\"#{TEXT_STYLE}\">#{stroke_count}</text>\n"
svg << "<path d=\"#{stroke['d']}\" style=\"#{CURRENT_PATH_STYLE}\" />\n"
when :frames
md = /^[LMT]\s*(#{COORD_RE})[,\s]*(#{COORD_RE})/ix.match(paths.last)
path_start_x = md[1].to_f
path_start_y = md[2].to_f
path_start_x += WIDTH * (stroke_count - 1)
h = 0
w = 0
paths.each_with_index do |path, i|
isLast = ((stroke_count - 1) == i)
delta = isLast ? WIDTH * (stroke_count - 1) : WIDTH
h, asd = (stroke_count - 1).divmod(5)
w, asd = i.divmod(5)
#path.gsub!("M ", "M")
# Move strokes relative to the frame
path.gsub!(/([LMTm])\s*(#{COORD_RE})/x) do |m| #('^[LMT]\\s*(' + coordRe + ')[,\\s](' + coordRe + ')', 'i');
letter = $1
x = $2.to_f
x += delta
"#{letter}#{x}"
end
path.gsub!(/(S)\s*(#{COORD_RE})[,\s]*(#{COORD_RE})[,\s]*(#{COORD_RE})/) do |m|
letter = $1
x1 = $2.to_f
x1 += delta
x2 = $4.to_f
x2 += delta
"#{letter}#{x1},#{$3},#{x2}"
end
path.gsub!(/((?!^)\G[-,\s]|C)\s*(#{COORD_RE})[-,\s](#{COORD_RE})[-,\s](#{COORD_RE})[-,\s](#{COORD_RE})[-,\s](#{COORD_RE})[-,\s](#{COORD_RE})/) do |m|
letter = $1
x1 = $2.to_f
x1 += delta
x2 = $4.to_f
x2 += delta
x3 = $6.to_f
x3 += delta
"#{letter}#{x1},#{$3},#{x2},#{$5},#{x3},#{$7}"
end
svg << "<path d=\"#{path}\" style=\"#{isLast ? CURRENT_PATH_STYLE : EXISTING_PATH_STYLE}\" transform=\"translate(#{-WIDTH*h*5},#{HEIGHT*h})\"/>\n"
end
# Put a circle at the stroke start
svg << "<circle cx=\"#{path_start_x}\" cy=\"#{path_start_y}\" r=\"5\" stroke-width=\"0\" fill=\"#FF2A00\" opacity=\"0.7\" transform=\"translate(#{-WIDTH*w*5},#{HEIGHT*w})\"/>"
svg << "\n"
end
end
svg << SVG_FOOT
ImageConvert.save_svg_as_png(svg, width, height, "#{@output_dir}/#{codepoint}_#{@type}.png")
end
# TODO: make this shit really smart
def move_text_relative_to_path(path)
md = /^M (#{COORD_RE}) , (#{COORD_RE})/ix.match(path)
path_start_x = md[1].to_f
path_start_y = md[2].to_f
text_x = path_start_x
text_y = path_start_y
[text_x, text_y]
end
def line(x1, y1, x2, y2, style)
"<line x1=\"#{x1}\" y1=\"#{y1}\" x2=\"#{x2}\" y2=\"#{y2}\" style=\"#{style}\" />\n"
end
end
class ImageConvert
def self.save_svg_as_png(svg, width, height, destination)
svg = RSVG::Handle.new_from_data(svg)
width = width ||=500
height = height ||=500
surface = Cairo::ImageSurface.new(Cairo::FORMAT_ARGB32, width, height)
context = Cairo::Context.new(surface)
context.render_rsvg_handle(svg)
surface.write_to_png(destination)
end
end
end
input_dir = ARGV[0] # Directory of .svg's
output_dir = ARGV[1] # Directory of .png's
type = ARGV[2] || 'frames' # Style of output, frames|animated|numbers
#output_dir = File.expand_path('../svgs', __FILE__)
Dir.mkdir(output_dir) unless File.exists?(output_dir)
processed = 0
puts "Starting the conversion @ #{Time.now} ..."
Dir["#{input_dir}*.svg"].each do |file|
begin
Importer::KanjiVG.new(File.open(file), output_dir, type.to_sym)
rescue => e
puts "Failed to process file: #{file}"
puts "\t" << e.message
e.backtrace.each { |msg| puts "\t" << msg }
end
processed += 1
if processed % 200 == 0
puts "Processed #{processed} @ #{Time.now}"
end
end