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Changelog

Source: NEWS.md

laridae (development version)

  • lari_tables() and lari_triangulate() return edge_sources (mesh spec v0.2), and lari_edge_sources() returns it alone: one row per constraint edge and covering input segment (edge, segment, forward), from CGAL’s constraint contexts, so every coincident or collinear input is listed with its direction. segments$segment and segments$count are the lowest and the number of these rows.

  • Meshed text: lari_text() shapes a string in any installed font and meshes its glyphs as polygons with holes; lari_text_outline() returns the glyph rings (via ‘textshaping’ and ‘systemfonts’, both in Suggests) and lari_glyphs() meshes rings from any source, including the output of the ‘string2path’ package. New article “Meshed text”.

laridae 0.1.0

  • Rebuilt from scratch on CGAL 6 (Constrained_triangulation_plus_2 with exact predicates and Delaunay_mesher_2) behind a persistent cpp11 handle: lari_new(), lari_add_points(), lari_add_segments(), lari_remove_points(), lari_remove_segments(), lari_refine(), lari_step(), and the contract tables lari_vertices(), lari_triangles(), lari_segments(), lari_depth(), lari_counts().
  • Sizing fields: lari_refine(size = ) takes a function of position or a grid giving the local maximum triangle area. The default edge-length floor now accounts for the sizing field, so a size argument is honoured instead of being capped at the coarse input-edge scale when min_edge_length is left at its default.
  • Hull-edge Steiner points created during refinement now get attributes interpolated along the nearest hull edge, rather than copied from the single nearest vertex (fixes attribute error at map scale).
  • lari_triangles() (and lari_tables()) gain a depth_distinct column: the constraint depth with a doubled boundary counted once, matching cdtr’s depth_distinct.
  • lari_tables() and lari_triangulate() now return a one-row report with the backend, laridae and CGAL versions, the erase region, the edge floor, and the last refinement’s unrefined counts.
  • Licence is now GPL (>= 3), as required by CGAL’s Mesh_2.
  • CGAL (>= 6.0) and Boost headers are supplied by the CRAN packages RcppCGAL and BH via LinkingTo, so no system CGAL is required and the compiled code passes R CMD check --as-cran. For development, set CGAL_INCLUDE_DIR to build against stock CGAL headers instead (see README; that route is not CRAN-clean).
  • Builds on macOS and Windows: CGAL 6’s Constrained_triangulation_plus_2 includes boost/stl_interfaces/iterator_interface.hpp, which BH does not ship, so the three Boost.STLInterfaces headers it needs are vendored in src/boost-extra (Boost Software License). Linux only built before because the system Boost filled the gap. Windows also gets a src/Makevars.win.
  • The previous Rcpp/cgalh code is preserved on the legacy-rcpp branch.