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This new option, when enabled, forces the in-tree front ends (Emcscripten, GTK, NestedVM, OS X, and Windows) to use the recently introduced draw_polygon_fallback() in place of their native draw_poly(). This will enable easy testing of this function in the future. This new option is off by default. To enable it, run CMake as: $ cmake -DUSE_DRAW_POLYGON_FALLBACK=on Note that I did _not_ update the Postscript frontend (ps.c) to use this new option, as I don't think draw_polygon_fallback() would work at all in Postscript, where the drawing units are no longer guaranteed to be pixels. The envisioned use case for this option is a developer testing changes to this function for sanity and/or performance, which I only foresee happening on a standard GUI front end.
This is the README accompanying the source code to Simon Tatham's puzzle collection. The collection's web site is at <https://www.chiark.greenend.org.uk/~sgtatham/puzzles/>. The puzzle collection is built using CMake <https://cmake.org/>. To compile in the simplest way (on any of Linux, Windows or Mac), run these commands in the source directory: cmake . cmake --build . The manual is provided in Windows Help format for the Windows build; in text format for anyone who needs it; and in HTML for the Mac OS X application and for the web site. It is generated from a Halibut source file (puzzles.but), which is the preferred form for modification. To generate the manual in other formats, rebuild it, or learn about Halibut, visit the Halibut website at <https://www.chiark.greenend.org.uk/~sgtatham/halibut/>.