blocks|key|2344794|text|除非您是字体、排版和书写系统方面的世界顶级专家之一，否则答案很简单:不要使用。TrueType/OpenType有很多需要支持才能正确呈现的表，甚至在使用FreeType+(这是一个非常低级的库)时，大多数人都会搞错。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2344795|如果你需要做低级的、跨平台的确定性字体处理，那么至少你应该使用FreeType和libotf。这将为您提供对字形和轮廓的访问，然后您可以随心所欲地呈现它们。不过，在大多数情况下，使用GUI系统的文本呈现例程要容易得多，也不容易出错。|2344796|最后，如果你坚持忽略我的建议，在FreeType上有一个很好的RTFS和微软的在线资源来解释TrueType/OpenType字体的表格可能是最好的开始。|2344797|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|H|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|I|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|J|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|G|$]]

Unless you're one of the world's top experts on fonts, typography, and writing systems, the answer is simple: DON'T. TrueType/OpenType has a lot of tables you need to support for correct rendering, and even when using FreeType (which is an extremely low-level library), most people get it wrong.

If you need to do low-level, deterministic-across-platforms font handling, then at the very least, you should be using FreeType and libotf. This will provide you with access to the glyphs and outlines which you can then render however you like. In most cases though using your GUI system's text rendering routines will be a lot easier and less error-prone.

Finally, if you insist on ignoring my advice, a good RTFS on FreeType and Microsoft's online resources explaining the tables in TrueType/OpenType fonts are probably the best place to get started.

blocks|key|2344824|text|作为R..。就像我在评论中写的一样，我不会建议你自己构建另一个TTF解析器。如果你渴望学习计算机科学这个非常"spannende“的领域，我推荐Donald+E.Knuth的”计算机编程的艺术“第二卷。(它是Metafont，不是TTF，但已被证明是正确的：-)|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2344825|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

as R.. wrote the same time as i did in my comment, i would not to suggest to build another TTF-parser by your own. If you are eager to learn this very "spannende" field of Computer Science I would recommend "The Art of Computer Programming" Vol 2 from Donald E. Knuth. (it is Metafont, not TTF, but proven to be correct:-)

blocks|key|2344851|text|我建议你|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2344852|2344853|阅读你能找到的所有TTF文档|ordered-list-item|2344854|找到你能找到的所有开源TTF解析器%2B渲染器，有很多不同的语言，比如Freetype+(c/c%2B%2B)，Batik+(java)，以及任何你可以在谷歌上搜索到的东西。此外，乔治·威廉姆斯的fontforge可能会在你的旅程中对你非常有帮助。|2344855|撕开你在1中收集的所有程序，看看它们是如何工作的。看看你是否能做一个很小的例子程序来做一些简单的事情，比如转储字母“i”的轮廓的点的列表。|2344856|在你的光栅化上工作。从非常简单的东西开始，比如对字母"l“进行光栅化。|2344857|2344858|TTF的问题是没有一种简单的文件格式，而freetype为你处理了很多疯狂的细节。但是，如果你不关心可移植性，并且你已经有了一个想要呈现的特定的TTF文件，并且你只关心一个小的简单的字母表，比如拉丁语或西里尔字母，你可能还可以。|2344859|此外，您可能还想查看我从我的小项目https://github.com/donbright/font_to_svg/链接到的TTF文档列表。|offset|length|2344860|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/donbright/font_to_svg/^0|0|0|0|0|0|0|0|0|H|15|0|0^^$0|@$1|2|3|4|5|6|7|10|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|11|8|@]|9|@]|A|$]]|$1|C|3|D|5|E|7|12|8|@]|9|@]|A|$]]|$1|F|3|G|5|E|7|13|8|@]|9|@]|A|$]]|$1|H|3|I|5|E|7|14|8|@]|9|@]|A|$]]|$1|J|3|K|5|E|7|15|8|@]|9|@]|A|$]]|$1|L|3|-4|5|6|7|16|8|@]|9|@]|A|$]]|$1|M|3|N|5|6|7|17|8|@]|9|@]|A|$]]|$1|O|3|P|5|6|7|18|8|@]|9|@$Q|19|R|1A|1|1B]]|A|$]]|$1|S|3|-4|5|6|7|1C|8|@]|9|@]|A|$]]]|T|$U|$5|V|W|X|A|$Y|Z]]]]

I would suggest you 

<ol>
<li>Read all the TTF docs you can find</li>
<li>Find all the open source TTF parsers + renderers you can find, in many different languages, such as Freetype (c/c++), Batik (java), and anything else you can google for. Also George Williams' fontforge will likely be very helpful to you on your journey.</li>
<li>Rip apart all the programs you collected in 1. and see how they work. See if you can make a tiny small example program to do something simple, like dump the list of points for the outline of the letter "I".</li>
<li>Work on your rasterization. Start with something very simple, like rasterizing the letter "l". </li>
</ol>

The problem with TTF is that there is not a simple file format, and freetype handles a lot of crazy details for you. However if you don't care about portability, and you already have a specific TTF file you want to render, and you only care about a small simple alphabet, like Latin or Cyrillic, you might be OK. 

Also you might want to check out a list of TTF documentation I linked to from my little project <a href="https://github.com/donbright/font_to_svg/" rel="nofollow noreferrer">https://github.com/donbright/font_to_svg/</a>

blocks|key|1434201|text|对于任何想尝试的人来说，这并不是不可能的。我对这样做很好奇，因为我喜欢DIY图形方法，我分配一些内存并写入其中，然后保存为jpg或png。我从giflib盗版了一个位图字体，但严格来说是8x8像素。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1434202|以下是几个链接：|1434203|`http://stevehanov.ca/blog/index.php?id=143`
`https://www.google.com/search?q=ttf%2Bparser%2Bc&ie=utf-8&oe=utf-8`|code-block|syntax|javascript|1434204|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|L|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|M|8|@]|9|@]|A|$G|H]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

Not impossible, for anyone else tempted to try. I was curious about doing it because I like the DIY graphics approach where I allocate some memory and write into it, then save as a jpg or png. I pirated a bitmap font from giflib but that's strictly 8x8 pixels.

A few links:

<pre><code>`http://stevehanov.ca/blog/index.php?id=143`
`https://www.google.com/search?q=ttf+parser+c&amp;ie=utf-8&amp;oe=utf-8`
</code></pre>

I want to read a ttf and draw a text with that font on a buffer. Even though there are libraries such as freetype, gd to do this task, I want to write my own code. Can you advice me on how to accomplish this task?

TrueType Font Parsing in C

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我想读取一个ttf，并在缓冲区中绘制一个带有该字体的文本。即使有诸如freetype，gd这样的库来完成这项任务，我还是想写我自己的代码。你能建议我如何完成这项任务吗？

问C语言中的TrueType字体解析
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问C语言中的TrueType字体解析EN