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CHANGELOG.md

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Version 1.7 (2020-03-07)

  • Added mtsdf mode - a combination of msdf with sdf in the alpha channel
  • Distance fields can now be stored as uncompressed TIFF image files with floating point precision
  • Bitmap class refactor - template argument split into data type and number of channels, bitmap reference classes introduced
  • Added a secondary "ink trap" edge coloring heuristic, can be selected using -coloringstrategy inktrap
  • Added computation of estimated rendering error for a given SDF
  • Added computation of bounding box that includes sharp mitered corners
  • The API for bounds computation of the Shape class changed for clarity
  • Fixed several edge case bugs

Version 1.6 (2019-04-08)

  • Core algorithm rewritten to split up advanced edge selection logic into modular template arguments.
  • Pseudo-distance evaluation reworked to eliminate discontinuities at the midpoint between edges.
  • MSDF error correction reworked to also fix distances away from edges and consider diagonal pairs. Code simplified.
  • Added scanline rasterization support for Shape.
  • 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.
  • Fixed autoframe scaling, which previously caused the output to have unnecessary empty border.
  • -guessorder switch no longer enabled by default, as the functionality is now provided by the scanline pass.
  • Updated FreeType and other libraries, changed to static linkage
  • Added 64-bit and static library builds to the Visual Studio solution

Version 1.5 (2017-07-23)

  • Fixed rounding error in cubic curve splitting.
  • SVG parser fixes and support for additional path commands.
  • Added CMake build script.

Version 1.4 (2017-02-09)

  • Reworked contour combining logic to support overlapping contours. Original algorithm preserved in functions with _legacy suffix, which are invoked by the new -legacy switch.
  • Fixed a severe bug in cubic curve distance computation, where a control point lies at the endpoint.
  • 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.
  • SVG parser fixes and improvements.

Version 1.3 (2016-12-07)

  • Fixed -reverseorder switch.
  • Fixed glyph loading to use the proper method of acquiring the outlines from FreeType.

Version 1.2 (2016-07-20)

  • Added option to specify that shape vertices are listed in reverse order (-reverseorder).
  • Added option to set a seed for the edge coloring heuristic (-seed <n>), which can be used to adjust the output.
  • Fixed parsing of glyph contours starting that start with a curve control point.

Version 1.1 (2016-05-08)

  • Switched to MIT license due to popular demand.
  • Fixed SDF rendering anti-aliasing when the output is smaller than the distance field.

Version 1.0 (2016-04-28)

  • Project published.