ggpattern v0.4.2

Breaking changes

• To turn off "clipping" certain built-in patterns with the new R 4.1 graphic features
  and instead use a raster image approximation one should now use
  options(ggpattern_use_R4.1_masks = FALSE) instead of options(ggpattern_use_R4.1_clipping = FALSE).
  Alternatively, using options(ggpattern_use_R4.1_features = FALSE) to turn off all
  R 4.1 features will continue to work.

• {ggpattern} removes the following data/functions
  which were deprecated in a previous version of {ggpattern}:

  • convert_polygon_df_to_polygon_grob()
  • convert_polygon_df_to_polygon_sf()
  • convert_polygon_sf_to_polygon_df()

• Defunct functions are no longer exported.

New features

• {ggpattern} now supports geom_histogram_pattern() (#71)

Bug fixes and minor improvements

• geom_sf_pattern() and geom_polygon_pattern() now support polygons with holes
  by using "alpha masking" instead of a "clipping path".
  If R 4.1 alpha mask feature is not supported by the active graphics device
  (or the masking feature is declined) we use a raster image approximation of the pattern.
  Resolution of the raster approximation can be adjusted by the pattern_res aesthetic
  whose default in turn can be adjusted by the "ggpattern_res" global option.

  This change fixes patterns filling holed polygons in certain graphic devices (#68).
  This change fixes patterns sometimes escaping plot window (#60).

• draw_key_polygon_pattern(), GeomMapPattern, GeomPolygonPattern, and
  GeomSfPattern now draws a "border" grob on top of the "pattern" grob (#72).

• Continuous "pattern_colour", "pattern_fill", and "pattern_fill2" color scales'
  default "colourbar" guide support should now work.

• scale_pattern_size_continuous() now uses "pattern_size" aesthetic
  instead of "size" aesthetic in underlying ggplot2::continuous_scale() call.

• We now export scale_pattern_alpha() which is an alias of
  scale_pattern_alpha_continuous().