David Turner
24 years ago
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09c9ac2936
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664643336a
8 changed files with 115 additions and 6 deletions
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LATEST CHANGES BETWEEN 2.0.3 and 2.0.3 |
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I. CHANGES TO THE MODULES / FONT DRIVERS : |
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- THE AUTO-HINTER HAS BEEN SLIGHTLY IMPROVED, in order to fix several |
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annoying artefacts, mainly: |
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- blue zone alignement of horizontal stems wasn't performed |
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correctly, resulting in artefacts like the "d" being placed |
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one pixel below the "b" in some fonts like Time New Roman |
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- overshoot thresholding wasn't performed correctly, creating |
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unpleasant artefacts at large character pixel sizes |
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- composite glyph loading has been simplified. This gets rid |
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of various artefacts where the components of a composite glyphs |
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were not correctly spaced. |
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These are the last changes to the current auto-hinting module. |
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A new hinting sub-system is currently in the work in order to |
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support native hints in Type 1 / CFF / OpenType fonts, as well |
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as globally improve rendering |
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- The PCF driver has been fixed. It reported invalid glyph dimensions |
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for the fonts available on Solaris. |
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- The Type 1, CID and CFF drivers have been modified to fix the |
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computation of the EM size |
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- The Type 1 driver has been fixed to avoid a dangerous bug that |
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crashed the library with non-conforming fonts (i.e. ones that |
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do not place the .notdef glyph at position 0) |
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- The TrueType driver had a rather subtle bug (dangling pointer when |
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loading composite glyphs) that could crash the library in rare |
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occasions ! |
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II. HIGH-LEVEL API CHANGES : |
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- the error code enumeration values have been changed. An error |
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value is decomposed in a generic error code, and a module number. |
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see <freetype/fterrors.h> for details |
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- a new public header file has been introduced, named FT_TRIGONOMETRY_H |
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(include/freetype/fttrig.h), providing trigonometric functions to |
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compute sines, cosines, arctangents, etc.. with 16.16 fixed |
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precision. The implementation is based on the CORDIC algorithm |
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and is very fast while being sufficiently accurate. |
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III. INTERNALS : |
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- added BeOS-specific files in the old build sub-system. Note that |
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no changes were required to compile the library with Jam. |
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- the configuration is now capable of automatically detecting 64-bit |
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integers on a set of predefined compilers (GCC,Visual C++,Borland C++) |
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and will use them by default. This provides a small performance |
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boost |
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- a small memory leak that happened when opening 0-sized files (duh !!) |
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have been fixed.. |
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- fixed bezier stack depth bug in the routines provided by the |
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FT_BBOX_H header file. Also fixed similar bugs in the rasterizers. |
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- the outling bounding box code has been rewritten to use direct |
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computations, instead of bezier sub-division, to compute the |
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exact bounding box of glyphs. This is slightly slower but more |
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accurate. |
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- The build system has been improved and fixed, mainly to support "make" |
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on Windows 2000 correctly, avoid problems with "make distclean" on |
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non Unix systems, etc.. |
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- hexadecimal constants have been suffixed with "U" to avoid problems |
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with certain compilers on 64-bit platforms. |
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- a new directory named "src/tools" has been created. It contains |
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Python scripts and simple unit test programs used to develop the |
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library. |
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- the DocMaker tool has been moved from "docs" to "src/tools" and |
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has been updated with the following: |
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- now accepts the "--title=XXXX" or "-t XXXX" option from the |
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command line to set the project's name in the generated |
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API reference |
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- now accepts the "--output=DIR" or "-o DIR" option from the |
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command line to set the output directory for all generated |
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HTML files |
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- now accepts the "--prefix=XXXX" or "-p XXX" option from the |
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command line to set the file prefix to use for all generated |
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HTML files. |
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- now generates the current time/data on each generated page |
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in order to distinguish between versions. |
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DocMaker can be used with other projects now, not only FT2 |
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(e.g. MLib, FTLayout, etc..) |
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=========================================================================== |
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LATEST CHANGES BETWEEN 2.0.2 and 2.0.1 |
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