ea5f01d73d
Implements the edge-DOF (cyclic) Euclidean Hessian, unblocking the full cyclic
Newton solve, and enables the Java EuclideanCyclicConvergenceTest cross-validation.
- euclidean_hessian.hpp: `euclidean_hessian_block_fd` / `_sym` — per-face 6×6
block FD over (u1,u2,u3,λ12,λ23,λ31), mirroring hyper_ideal_hessian_block_fd.
Per-face outputs carry the gradient signs (−α vertex, +α_opp edge), so the
result equals ∂G/∂x by construction (locality lemma). Analytic vertex-only
cotangent Hessian unchanged (still used for vertex-only layouts).
- newton_solver.hpp: newton_euclidean routes cyclic layouts (edge DOFs present)
through the block-FD Hessian; vertex-only path unchanged.
- tests:
* CyclicCircularEdge_CatHead_JavaXVal (now GREEN) — prescribe φ=π−0.1 on one
interior edge, solve, assert realised α_opp+α_opp = π−0.1 @1e-9.
* CyclicCircularEdge_PhiEntersGradient_CatHead — solver-free φ-wiring check.
* CyclicHessian_BlockFD_MatchesGradientFD_Tetrahedron — Hessian correctness.
243/243 cgal tests pass; vertex-only Euclidean Newton unaffected.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Reviewer meeting materials
A single landing page for the three documents associated with an external-reviewer meeting. The materials are written for a peer who actively publishes in discrete differential geometry — specifically the decorated-DCE / Penner-coordinates / hyperideal-polyhedra / canonical-tessellations research line — and who would potentially use conformallab++ as numerical infrastructure for their own future experiments.
| Document | Audience | Purpose |
|---|---|---|
briefing.md |
the reviewer | one-page orientation: what the project is, where to look first, what we want from them |
questions.md |
the reviewer | the 5 concrete decisions we want their opinion on (skim before the meeting) |
agenda.md |
me | my own meeting playbook: timing, order, the "no" question, post-meeting memo template |
After the meeting, a fourth file 2026-XX-XX-meeting-notes.md should
land here too — the memo template at the bottom of agenda.md is the
suggested structure.
When to send to the reviewer
- briefing.md + questions.md: as part of the meeting-confirmation email, ~5 business days before the meeting. Subject line: "Pre-read for our conformallab++ chat (~15 min)".
- agenda.md: never send. This is internal scaffolding.
Hub-Page durability
The reviewer hub HTML at https://tmoussa.codeberg.page/ConformalLabpp/
is published from doc/reviewer/hub.html in the repo (not from a
detached preview branch). This means:
- Merging any of the open PRs into
maintriggers.gitea/workflows/doxygen-pages.ymlwhich republishes the hub alongside fresh Doxygen HTML — the reviewer URL stays live across merges with no manual intervention. - The hub is source-controlled, so changes are reviewable via PR like any other doc, and old versions live in git history.
- The original Doxygen index moves to
/doxygen.htmlwhenever the hub override is active; both are reachable from the hub itself.
Quick links the reviewer should bookmark
- 🌐 Reviewer-hub landing page: https://tmoussa.codeberg.page/ConformalLabpp/ (the hub shows status badges, a "what's new" banner with the most recent delta, the research-alignment table, and direct links into every document below)
- 📦 Source: https://codeberg.org/TMoussa/ConformalLabpp
- 📝 Architecture decisions (incl. the Q7 "no" prompt):
../architecture/locked-vs-flexible.md - 📐 Schläfli derivation (for Q3):
../math/hyperideal-hessian-derivation.md - 📚 Literature index (for Q1 + Q3):
../math/references.md - 🗺️ Per-phase roadmap (for Q1):
../roadmap/phases.md - 🧪 Research-track entries with acceptance criteria (Q1 + Q2):
../roadmap/research-track.md