clay v0.14 (deps/clay, zlib licence) supplies the layout engine for the new
akgl_ui subsystem. Sources-listed rather than add_subdirectory()'d, on the
semver/libccd precedent: clay's CMakeLists declares no library target, builds
its examples by default, and requires CMake 3.27 against this project's 3.10.
src/ui_clay.c is the one CLAY_IMPLEMENTATION translation unit, compiled -w on
the vendored-code terms but with clay's symbols deliberately exported --
consumers' CLAY() macros resolve against libakgl.so, and akgl/ui.h warns them
never to link a second clay.
The subsystem is runtime-optional the way collision is: always compiled in,
inert until akgl_ui_init(), which bounds clay to the overridable AKGL_UI_*
ceilings, checks Clay_MinMemorySize() against a static BSS arena (no malloc),
and refuses with both numbers in the message when it does not fit. Measured:
812544 bytes at the default 1024 elements / 4096 measured words, against a
1 MiB arena. clay's void-callback layout errors are logged as they happen and
the first is stashed for the error protocol to raise later.
AKGL_ERR_UI joins the status band before AKGL_ERR_LIMIT, named in
akgl_error_init. New `ui` test suite covers validation, the init/shutdown
lifecycle, and arena exhaustion via the akgl_ui_arena_limit test hook (same
contract as akgl_ccd_arena_set_limit). clay.h is installed beside semver.h,
its licence beside libccd's, and the headers suite proves akgl/ui.h
self-contained -- clay.h compiles clean under -Wall.
Co-Authored-By: Claude Code (Claude Fable 5, claude-fable-5) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01KzBDV2fqgnUAcqCKqKvc71
Both were sitting in deps/ untracked, with dangling .git pointer files into
.git/modules/{libccd,tg} and no .gitmodules entry at all. A clean clone of this
repository got neither, and `git submodule update` had nothing to update. tg's
worktree had also been emptied -- all 95 files staged as deletions inside its
own index -- so the directory held nothing but the pointer.
Both are now real submodules, pinned by SHA and checked against the tag:
deps/libccd 7931e764a19ef6b21b443376c699bbc9c6d4fba8 = v2.1
deps/tg 823f78db7e104ad5074288b4f362f0d3ef0fb0b6 = v0.7.9
Named "deps/libccd" and "deps/tg" to match the eight entries already there,
which meant re-registering rather than adopting the existing .git/modules
directories -- those were named "libccd" and "tg" while every other module lives
under .git/modules/deps/. Both checkouts were verified pristine at their tags
first, so nothing was lost by re-cloning.
URLs are https://, which is what both remotes already pointed at. Five of the
existing eight entries use git@github.com:, which a CI checkout with no SSH key
cannot use; that is not this commit's problem and is left alone.
tg is wired into nothing, deliberately, and TODO.md now says so with the reason
it is kept anyway -- indexed point-in-polygon against concave polygons is the
one job GJK and MPR structurally cannot do. That entry is a deadline: either the
consumer appears or the submodule comes out.
Nothing consumes either dependency yet, so the build and the full suite are
unchanged.
Co-Authored-By: Claude Code <noreply@anthropic.com>
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
