83 lines
4.8 KiB
Markdown
83 lines
4.8 KiB
Markdown
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## Version 1.9 (2021-05-28)
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- Error correction of multi-channel distance fields has been completely reworked
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- Added new edge coloring strategy that optimizes colors based on distances between edges
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- Added some minor functions for the library API
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- Minor code refactor and optimizations
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## Version 1.8 (2020-10-17)
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- Integrated the Skia library into the project, which is used to preprocess the shape geometry and eliminate any self-intersections and other irregularities previously unsupported by the software
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- The scanline pass and overlapping contour mode is made obsolete by this step and has been disabled by default. The preprocess step can be disabled by the new `-nopreprocess` switch and the former enabled by `-scanline` and `-overlap` respectively.
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- The project can be built without the Skia library, forgoing the geometry preprocessing feature. This is controlled by the macro definition `MSDFGEN_USE_SKIA`
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- Significantly improved performance of the core algorithm by reusing results from previously computed pixels
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- Introduced an additional error correction routine which eliminates MSDF artifacts by analytically predicting results of bilinear interpolation
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- Added the possibility to load font glyphs by their index rather than a Unicode value (use the prefix `g` before the character code in `-font` argument)
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- Added `-distanceshift` argument that can be used to adjust the center of the distance range in the output distance field
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- Fixed several errors in the evaluation of curve distances
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- Fixed an issue with paths containing convergent corners (those whose inner angle is zero)
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- The algorithm for pseudo-distance computation slightly changed, fixing certain rare edge cases and improving consistency
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- Added the ability to supply own `FT_Face` handle to the msdfgen library
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- Minor refactor of the core algorithm
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### Version 1.7.1 (2020-03-09)
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- Fixed an edge case bug in scanline rasterization
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## Version 1.7 (2020-03-07)
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- Added `mtsdf` mode - a combination of `msdf` with `sdf` in the alpha channel
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- Distance fields can now be stored as uncompressed TIFF image files with floating point precision
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- Bitmap class refactor - template argument split into data type and number of channels, bitmap reference classes introduced
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- Added a secondary "ink trap" edge coloring heuristic, can be selected using `-coloringstrategy inktrap`
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- Added computation of estimated rendering error for a given SDF
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- Added computation of bounding box that includes sharp mitered corners
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- The API for bounds computation of the `Shape` class changed for clarity
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- Fixed several edge case bugs
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## Version 1.6 (2019-04-08)
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- Core algorithm rewritten to split up advanced edge selection logic into modular template arguments.
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- Pseudo-distance evaluation reworked to eliminate discontinuities at the midpoint between edges.
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- MSDF error correction reworked to also fix distances away from edges and consider diagonal pairs. Code simplified.
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- Added scanline rasterization support for `Shape`.
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- Added a scanline pass in the standalone version, which corrects the signs in the distance field according to the selected fill rule (`-fillrule`). Can be disabled using `-noscanline`.
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- Fixed autoframe scaling, which previously caused the output to have unnecessary empty border.
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- `-guessorder` switch no longer enabled by default, as the functionality is now provided by the scanline pass.
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- Updated FreeType and other libraries, changed to static linkage
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- Added 64-bit and static library builds to the Visual Studio solution
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## Version 1.5 (2017-07-23)
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- Fixed rounding error in cubic curve splitting.
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- SVG parser fixes and support for additional path commands.
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- Added CMake build script.
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## Version 1.4 (2017-02-09)
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- Reworked contour combining logic to support overlapping contours. Original algorithm preserved in functions with `_legacy` suffix, which are invoked by the new `-legacy` switch.
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- Fixed a severe bug in cubic curve distance computation, where a control point lies at the endpoint.
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- Standalone version now automatically detects if the input has the wrong orientation and adjusts the distance field accordingly. Can be disabled by `-keeporder` or `-reverseorder` switch.
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- SVG parser fixes and improvements.
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## Version 1.3 (2016-12-07)
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- Fixed `-reverseorder` switch.
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- Fixed glyph loading to use the proper method of acquiring outlines from FreeType.
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## Version 1.2 (2016-07-20)
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- Added option to specify that shape vertices are listed in reverse order (`-reverseorder`).
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- Added option to set a seed for the edge coloring heuristic (-seed \<n\>), which can be used to adjust the output.
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- Fixed parsing of glyph contours that start with a curve control point.
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## Version 1.1 (2016-05-08)
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- Switched to MIT license due to popular demand.
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- Fixed SDF rendering anti-aliasing when the output is smaller than the distance field.
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## Version 1.0 (2016-04-28)
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- Project published.
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