forked from 1b-agent/fieldcraft-upstream
f36b1d9a69
* geometry: open .solidcraft designs, rebuild them and keep persistent face names open_design(bytes) reads a design (container or JSON) with solidcraft-io, rebuilds its timeline with solidcraft-doc and returns its bodies; each Shape carries SolidCraft's persistent face names by B-rep face index, so a face keeps its name through a parameter edit. sample::plate_design builds a parametric test plate in code. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01NmAttHhUZTokgPeEJia8sm * engine: geometry.open, geometry.bodies and geometry.tessellate The session holds the open design (shared, restored on a failed command, journalled when it changes). Hostile-params coverage includes non-files, missing files, oversized paths and extreme tolerances against an open design. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01NmAttHhUZTokgPeEJia8sm * docs: opening SolidCraft designs in the architecture and roadmap Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01NmAttHhUZTokgPeEJia8sm * geometry: open_design_file reads through SolidCraft's bounded file access; simplify The engine's hand-rolled capped read is replaced by open_design_file, which uses solidcraft_io::vfs::read (refuses non-regular files before opening, works on the browser's in-memory files). Drops the duplicate size check, simplifies the sample sketch and the design-change test in Session::execute. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01NmAttHhUZTokgPeEJia8sm --------- Co-authored-by: jyviko <2501648+jyviko@users.noreply.github.com> Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
69 lines
4.9 KiB
Markdown
69 lines
4.9 KiB
Markdown
# Architecture
|
||
|
||
ModelCraft turns geometry into finite element models, writes them for the solvers engineers
|
||
already use, and solves linear problems itself.
|
||
|
||
```
|
||
SolidCraft B-rep ──tessellate──▶ boundary surface ──▶ volume mesh ──▶ FE model ──▶ Abaqus .inp
|
||
(solidcraft-kernel) (welded, watertight, tet (Delaunay) materials, Nastran .bdf
|
||
face-tagged) hex (core goal) sections, LS-DYNA .k
|
||
BCs, loads, ──▶ own linear
|
||
steps solver
|
||
```
|
||
|
||
## Crates and layers
|
||
|
||
`cargo xtask layers` enforces the table in `xtask/src/layers.rs`: a crate may depend only on
|
||
crates in strictly lower layers.
|
||
|
||
| Layer | Crate | Role | Status |
|
||
|---|---|---|---|
|
||
| L0 | `modelcraft-model` | Solver-neutral FE model: nodes, elements by label; materials, sections, sets, BCs, loads and steps as they land. Knows no file format. | started |
|
||
| L1 | `modelcraft-geometry` | The only door to SolidCraft: opens `.solidcraft` designs (rebuilt from their timeline, bodies with persistent face names), B-rep bodies, measures, tessellation into a face-tagged `SurfaceMesh`. No SolidCraft type in its API. | started |
|
||
| L1 | `modelcraft-mesh` | Surface preparation (weld, watertightness, feature edges), robust predicates, Delaunay tetrahedralization and refinement, Voronoi-based optimization, hex meshing, quality metrics. | started |
|
||
| L1 | `modelcraft-solver` | Element formulations, assembly, sparse linear static and modal solution. | planned |
|
||
| L1 | `modelcraft-decks` | Abaqus input, Nastran bulk data and LS-DYNA keyword readers and writers, to and from `model`. | planned |
|
||
| L1 | `modelcraft-render` | Display data (meshes, contour maps) without a GPU dependency. | planned |
|
||
| L2 | `modelcraft-doc` | The document: geometry, mesh, model, results, history. | planned |
|
||
| L3 | `modelcraft-io` | `.modelcraft` files, result files. | planned |
|
||
| L4 | `modelcraft-engine` | Commands (`CommandSpec`), `Session::execute` with rollback and the panic guard, scripts. | started |
|
||
| L5 | `modelcraft-ui-egui`, `modelcraft-mcp` | Desktop UI, control channel and MCP server. | planned |
|
||
| apps | `modelcraft`, `modelcraft-cli`, `modelcraft-web` | Desktop, command line, browser. | cli started |
|
||
|
||
Rules beyond the layer order:
|
||
- Nothing below L5 uses egui, eframe, winit, wgpu or rfd.
|
||
- Only `modelcraft-geometry` uses `solidcraft-*`, pinned by rev in the workspace `Cargo.toml`.
|
||
SolidCraft's `[patch.crates-io]` (its fixed truck crates) does not reach dependents, so the
|
||
workspace repeats it from the same rev; bump both together.
|
||
- Everything below the apps builds for `wasm32-unknown-unknown`.
|
||
|
||
## Meshing pipeline
|
||
|
||
1. **Boundary surface.** SolidCraft tessellates each body; every triangle carries its B-rep face,
|
||
so feature edges and face-based loads and BCs survive meshing. Faces of an opened design also
|
||
carry SolidCraft's persistent names (`F2:side:l4`, from the feature and sketch curve that made
|
||
them), so a load on a named face follows it when the design is edited and opened again.
|
||
2. **Surface preparation.** Weld coincident vertices, check the surface is closed, manifold and
|
||
consistently oriented, find feature edges (face boundaries, sharp dihedral angles).
|
||
3. **Tetrahedral meshing.** Bowyer–Watson Delaunay on Shewchuk's adaptive predicates (symbolic
|
||
perturbation for degeneracies), boundary recovery by the robust constrained Delaunay method of
|
||
Diazzi et al. 2023 (implicit Steiner points on indirect predicates, gift-wrapping fallback), so
|
||
every boundary triangle and its B-rep face tag survives. Then constrained Delaunay refinement to a
|
||
size field, ODT smoothing interleaved as in Tournois et al. 2009, and the Klingner–Shewchuk 2007
|
||
improvement schedule against slivers.
|
||
4. **Hexahedral meshing (the core).** Octree/grid dual all-hex first, the one family that meshes
|
||
any input validly (Livesu et al. 2021 dual schemes, Pitzalis et al. 2021 refinement, Gao et al.
|
||
2019 feature projection and padding, Garanzha et al. 2021 untangling). Then hex-dominant by tet
|
||
recombination (Pellerin et al. 2018), then polycube (DualCube labelling) for blocky parts;
|
||
frame-field/integer-grid-map methods stay research. Validity uses a certified trilinear Jacobian
|
||
check (Marschner et al. 2020), not corner Jacobians alone.
|
||
5. **Quality.** Scaled Jacobian, aspect ratio, dihedral angles; every generated mesh is checked
|
||
for positive Jacobians and conserved volume before it reaches the model.
|
||
|
||
## Commands
|
||
|
||
Every user-visible action is a `CommandSpec` in `crates/engine/src/cmd/<area>.rs` with a JSON
|
||
form. `Session::execute` clones the model, runs the command under `catch_unwind`, and restores
|
||
the model on an error or a panic; commands that changed the model are journalled, so the
|
||
journal replays as a script.
|