[공식 :
http://www.freetype.org/]
[freetype 1 :
http://freetype.sourceforge.net/freetype1/index.html] << freetype 2로 프로젝트 넘어감
[freetype 2 :
http://freetype.sourceforge.net/freetype2/index.html]
libfreetype은 freetype 프로젝트의 부산물(?)이며, 이녀석은 글꼴을 그려주는 라이브러리이다.
보다시피 거의 모든 폰트를 지원하며, 벡터/TrueType 폰트/외곽선 폰트 및 비트맵 폰트를 지원한다.
말이 복잡하지만, 간단하게 말해서 확대해도 안깨지는 글꼴과 확대하면 깨지는 글꼴을 지원한다.
그리고 두가지 라이센스를 제공한다. 머 BSD-like 가 GPL보다는 숨통이 트이니 사용자 입장에서는 좋긴하다.
| FreeType 2 is released under two open-source licenses: our own
BSD-like FreeType
License and the GPL. |
아무튼, 애플에서 이러한 힌팅기술에 대한 특허를 가지고 있으므로
특허권에 의해서 patented bytecode를 무시하여 약간은 부드럽지 못하게 나온다고 한다.
(아래의 사진을 보면 K R W Z 가 약간 깨어져 보인다.)
What Is Patented
It is important to clarify that the patents only cover a small subset of the TrueType instructions (not the whole process of hinting glyphs with specific bytecode programs). Unfortunately, the patented bytecodes are relatively often used in high-quality glyph programs.
For example, here is a picture showing the ‘Arial’ font with a specific version of the FreeType bytecode interpreter that simply ignores the patented bytecodes.
As you can see, some rather unpleasant artifacts make the font unacceptable for normal reading use.
Is FreeType 2 Affected by the Patents?
The answer is no for any recent build of FreeType 2, since it comes with an ‘auto-hinting’ module that was specifically designed to completely ignore the TrueType bytecode instructions.
However, the source code for the bytecode interpreter is still available and can be toggled on at compile time, for those that want to use it anyway (because they purchased a license from Apple, or because they are in a country where the patents do not apply, etc.). For details please check the documentation that comes with your FreeType source package (it normally involves changing one configuration macro).
Note that some beta versions of FreeType 2 did use the bytecode interpreter (since the auto-hinter wasn't available yet).
Finally, many Linux distributions seem to distribute a patched version of FreeType 2 with the bytecode interpreter activated, unlike the sources we distribute. Of course, we can only deny any kind of responsibility in this case. It further means that in the event where you need to update the version of FreeType installed on your system from our sources, you should better manually activate the bytecode interpreter at compile time in order to prevent any loss of quality.
[링크 : http://freetype.sourceforge.net/patents.html]
|
[링크 :
http://en.wikipedia.org/wiki/TrueType]
