540f71a629
Closes the v0.9.0 release loop on top of Phase 9a-Newton + Phase 8b-Lite: * CHANGELOG.md (NEW) — Keep-A-Changelog format, with v0.9.0 entry detailing all Phase 9a / 9b / 8b-Lite contents and the doc-audit corrections that landed via PR #10. * CITATION.cff — version 0.7.0 → 0.9.0, date 2026-05-18 → 2026-05-22. * Stale HDS-port stubs removed (13 GTEST_SKIPs total): - code/tests/test_spherical_functional.cpp - code/tests/test_hyper_ideal_functional.cpp - code/tests/test_hyper_ideal_hyperelliptic_utility.cpp These referenced a "HDS port (Phase 4)" that never happened — CoHDS was intentionally replaced by CGAL::Surface_mesh, and the functional tests live in code/tests/cgal/test_*_functional.cpp. * Test-count updates everywhere: - Non-CGAL 36 → 23 (drop = 13 deleted stubs) - CGAL 176 → 227 - Total 212 → 250 (+38 net, 0 skipped) Files: README.md, CLAUDE.md, CHANGELOG.md, scripts/try_it.sh, doc/api/tests.md, doc/contributing.md, doc/getting-started.md, doc/math/validation.md. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
190 lines
5.2 KiB
Markdown
190 lines
5.2 KiB
Markdown
# Getting Started
|
||
|
||
## Prerequisites
|
||
|
||
| Tool | Minimum | Notes |
|
||
|---|---|---|
|
||
| C++ compiler (GCC or Clang) | C++17 | GCC 11+ or Clang 14+ recommended |
|
||
| CMake | 3.20 | |
|
||
| Boost headers | 1.70 | Only for `-DWITH_CGAL_TESTS=ON` or `-DWITH_CGAL=ON` |
|
||
| Wayland/X11 dev headers | — | Only for `-DWITH_CGAL=ON` (viewer) |
|
||
|
||
All other dependencies (Eigen 3.4, CGAL 6.1.1, libigl 2.6, GLFW 3.4, GTest 1.14)
|
||
are bundled as tarballs in `code/deps/tarballs/` and extracted automatically at CMake
|
||
configure time. No internet access is required at build time (except GTest, fetched via
|
||
`FetchContent` from GitHub).
|
||
|
||
Install Boost on your system:
|
||
```bash
|
||
# Ubuntu / Debian
|
||
apt install libboost-dev
|
||
|
||
# macOS
|
||
brew install boost
|
||
```
|
||
|
||
---
|
||
|
||
## Clone
|
||
|
||
```bash
|
||
git clone https://codeberg.org/TMoussa/ConformalLabpp
|
||
cd ConformalLabpp
|
||
```
|
||
|
||
---
|
||
|
||
## Build modes
|
||
|
||
Three modes with increasing dependencies:
|
||
|
||
### Mode 1 — Fast tests (default, no system dependencies)
|
||
|
||
Pure-math tests: Clausen functions, hyper-ideal geometry, matrix utilities.
|
||
|
||
```bash
|
||
cmake -S code -B build
|
||
cmake --build build --target conformallab_tests -j$(nproc)
|
||
ctest --test-dir build --output-on-failure
|
||
```
|
||
|
||
Expected: **23 tests pass**.
|
||
|
||
### Mode 2 — CGAL tests, headless (recommended for CI and development)
|
||
|
||
Full CGAL test suite. Requires Boost headers only — no display, no Wayland, no GLFW.
|
||
|
||
```bash
|
||
cmake -S code -B build -DWITH_CGAL_TESTS=ON
|
||
cmake --build build --target conformallab_cgal_tests -j$(nproc)
|
||
ctest --test-dir build -R "^cgal\." --output-on-failure
|
||
```
|
||
|
||
Expected: **227 tests pass, 0 skipped**.
|
||
|
||
### Mode 3 — Full local build (CLI app + interactive viewer)
|
||
|
||
Requires Wayland or X11 development packages (`wayland-scanner`, `libx11-dev`, etc.).
|
||
Automatically enables the viewer library (GLFW + libigl).
|
||
|
||
```bash
|
||
cmake -S code -B build -DWITH_CGAL=ON
|
||
cmake --build build -j$(nproc)
|
||
```
|
||
|
||
> **Note:** `-DWITH_CGAL=ON` implies `-DWITH_VIEWER=ON`. Do not use this in headless
|
||
> environments — it will fail with `Failed to find wayland-scanner`.
|
||
|
||
---
|
||
|
||
## Running a single test
|
||
|
||
```bash
|
||
# By GTest filter (fastest, full output)
|
||
./build/conformallab_cgal_tests --gtest_filter="NewtonSolver*"
|
||
./build/conformallab_tests --gtest_filter="Clausen*"
|
||
|
||
# By CTest regex
|
||
ctest --test-dir build -R "cgal.NewtonSolver" --output-on-failure
|
||
```
|
||
|
||
All CGAL tests have the prefix `cgal.` in CTest (set in `tests/cgal/CMakeLists.txt`
|
||
via `TEST_PREFIX "cgal."`).
|
||
|
||
---
|
||
|
||
## First run — CLI app
|
||
|
||
After a full build (`-DWITH_CGAL=ON`):
|
||
|
||
```bash
|
||
# Euclidean conformal layout
|
||
./bin/conformallab_core -i input.off -g euclidean -o layout.off -j result.json
|
||
|
||
# Spherical layout
|
||
./bin/conformallab_core -i input.off -g spherical -o sphere.off
|
||
|
||
# Hyperbolic layout (HyperIdeal)
|
||
./bin/conformallab_core -i input.off -g hyper_ideal -o hyperbolic.off
|
||
|
||
# Show input mesh in interactive viewer
|
||
./bin/conformallab_core -i input.off -s
|
||
|
||
# All options
|
||
./bin/conformallab_core --help
|
||
```
|
||
|
||
## Example programs
|
||
|
||
```bash
|
||
./build/examples/example_layout [input.off] [layout.off] [result.json]
|
||
./build/examples/example_euclidean [input.off] [output.off]
|
||
./build/examples/example_hyper_ideal [input.off] [output.off]
|
||
./build/examples/example_viewer [input.off] # interactive, requires WITH_VIEWER
|
||
```
|
||
|
||
`example_layout.cpp` is the best starting point — it shows the complete pipeline in ~120 lines.
|
||
|
||
**Expected output of `example_euclidean` on the built-in quad-strip mesh:**
|
||
```
|
||
[example_euclidean] No input file given — using make_quad_strip().
|
||
[example_euclidean] Mesh: 6 vertices, 4 faces.
|
||
[example_euclidean] DOFs: 5 (1 vertex pinned).
|
||
[example_euclidean] Solving Newton system…
|
||
[example_euclidean] Converged in 1 iterations. ||G||_inf = 0
|
||
[example_euclidean] Per-vertex conformal factors u_i:
|
||
v0 u = 0 (pinned)
|
||
v1 u = -1.38778e-17 ← ≈ 0 (machine epsilon)
|
||
...
|
||
[example_euclidean] Mesh saved to: /tmp/conformallab_euclidean_out.off
|
||
```
|
||
Convergence in 1 iteration is expected: the "natural equilibrium" construction
|
||
sets x* = 0, so a small perturbation (-0.05) needs only one Newton step.
|
||
|
||
**Quick automated start (no interactive build needed):**
|
||
```bash
|
||
bash scripts/try_it.sh
|
||
```
|
||
This clones nothing (run from inside the repo), builds the CGAL test suite, runs
|
||
all 227+23 tests, and prints a summary. See `scripts/try_it.sh` for details.
|
||
|
||
---
|
||
|
||
## Known issues
|
||
|
||
### macOS Finder duplicates
|
||
|
||
macOS Finder sometimes creates duplicate files named `foo 2.hpp` when copying
|
||
the repository. These cause confusing compile errors ("redefinition of …").
|
||
|
||
**Fix (run once from the repo root):**
|
||
```bash
|
||
find code/include -name "* 2.*" -delete
|
||
find code/include -name "*\ 2.*" -delete
|
||
```
|
||
|
||
Files without a ` 2` suffix are always canonical — the duplicates are safe to delete.
|
||
|
||
### First build is slow
|
||
|
||
The first CMake configure extracts four tarballs (Eigen 3.4, CGAL 6.1.1,
|
||
libigl 2.6, GLFW 3.4) and downloads GTest via `FetchContent`.
|
||
Allow **30–90 seconds** for the first configure. Subsequent builds are fast
|
||
(< 10 s incremental).
|
||
|
||
---
|
||
|
||
## Rebuilding the CI Docker image
|
||
|
||
The CI runner is a self-hosted Raspberry Pi (ARM64). After changes to
|
||
`.gitea/docker/Dockerfile.ci-cpp`:
|
||
|
||
```bash
|
||
docker buildx build \
|
||
--platform linux/arm64 \
|
||
-f .gitea/docker/Dockerfile.ci-cpp \
|
||
-t git.eulernest.eu/conformallab/ci-cpp:latest \
|
||
--push \
|
||
.gitea/docker/
|
||
```
|