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字号的磅数是pt还是bp? #4

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zepinglee opened this issue Jul 14, 2015 · 4 comments
Closed

字号的磅数是pt还是bp? #4

zepinglee opened this issue Jul 14, 2015 · 4 comments
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@zepinglee
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我只看到ctex用的bp,比如说小四是12bp不是12pt,这两个单位虽然差不多,但是毕竟还是不一样吧?

@seisman
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seisman commented Jul 14, 2015

参考资料:

  1. http://tex.stackexchange.com/questions/34024/setting-a-document-in-ms-word-12pt-12bp
  2. https://en.wikipedia.org/wiki/Point_%28typography%29
  3. https://support.microsoft.com/en-us/kb/76388
  4. http://word.tips.net/T000161_Understanding_Point_Sizes.html

The 12 point of Word will be PostScript point, which in TeX would be called 12bp. A TeX pt is slightly
smaller: it's 1/72.27 inch, while a bp/PostScript point is 1/72 inch.

我还没来得及细看,按照上面的说法,TeX中:

  1. pt: 欧美传统排版的长度单位 1 inch = 72.27 pt
  2. bp: PostScript等电子排版领域中point都是bp,1 inch = 72 bp

而Word中的point(磅)是PostScript point,也就是TeX中的bp。

维基中也说到:

Note that the Chinese font sizes use American points
American points所使用的就是bp的定义,所以中文的字号应该是与bp相对应的。

ctex中对中文字号的定义用的都是bp,应该是没有问题的。我在写模板的时候没有考虑bp和pt的区别,所以可能很多都是错的。

@zepinglee
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我去改一下吧

@seisman
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seisman commented Jul 14, 2015

我还没有细看这几个参考资料,还不太确定。

@seisman
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seisman commented Jul 15, 2015

基本已经确定。

Word中的1 point = 1/72 inch,即采用的是PostScript Point的定义。在LaTeX中应使用bp

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