keitatypographic-unit
typographic-unit is a Ruby library for converting between typographic units according to TeX's way. This library can handle the following units:
- TeX Scaled Point(sp)
- TeX Point(pt)
- Pica(pt)
- Inch(in)
- TeX Big Point(bp)
- PostScript Point(ps_pt)
- Meter(m)
- Centimeter(cm)
- Milimeter(mm)
- Didot Point(dd)
- Cicero(cc)
- Japanese Q(q)
- American Point(american_pt)
- JIS Point(jis_pt)
- Japanese Gou(gou)
Installing
gem install typographic-unit
How to use
Basics
require "typographic-unit"
1.cm # => #<1cm>
1.cm - 1.mm # => #<0.9cm>
1.cm == 10.mm # => true
1.in >> :cm # => #<2.54cm>
2.54.cm >> :in # => #<1.0in>
1.in - 1.cm # => #<0.606299212598425in>
(1.in - 1.cm) >> :cm # => #<1.54cm>Convert
1.pt >> :mm # => #<0.351459803514598mm>
7227.pt >> :cm # => #<254.0cm>
1.in >> :bp # => #<72.0bp>
1.pt >> :sp # => #<65536.0sp>
1157.pt >> :pt # => #<1238.0pt>
1.cc >> :dd # => #<12.0dd>
10.q >> :mm # => #<2.5mm>
1.jis_pt >> :mm # => #<0.3514mm>Calculate
1.cm + 1.mm # => #<1.1cm>
1.cm + 1.in # => #<3.54cm>
1.pt - 1.bp # => #<-0.00131797426317971mm>
100.ps_pt - 100.jis_pt >> :mm # => #<0.137777777777779mm>
1.cm * 10 # => #<10cm>Step
list = []
1.cm.step(3.cm, 0.5.cm) do |i|
list << i
end
list # => [1.cm, 1.5.cm, 2.cm, 2.5.cm, 3.cm]License
This code is free to use under the terms of the MIT license.
Reference
- "Wikipedia:活字":http://ja.wikipedia.org/wiki/%E6%B4%BB%E5%AD%97
- "歴史の文字 記載・活字・活版 第三部 活版の世界":http://www.um.u-tokyo.ac.jp/publish_db/1996Moji/05/5901.html
- "CyberLibrarian:文字サイズ":http://www.asahi-net.or.jp/~ax2s-kmtn/ref/type_size.html