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* mesh: one transfinite interpolation for mapped hex and mesh.block; stable oracle report mesh.block's lattice is now built from the structured hex mesher's transfinite code: faces by quad::transfinite_grid, the interior by the new quad::transfinite_volume (Gordon-Thiel, blended by the block's graded parameters), which hex::mapped now calls too. 2D patches are the transfinite_grid of their sides. Edge curves return their corners exactly. Oracle: a zero-reference quantity (rounding noise) keeps its absolute tolerance as its fixture band, and docs/oracle.md shows such noise and relative errors inside the fixture band as bounds, so the report no longer changes with the order of floating-point operations (it failed the 'docs/oracle.md is current' check on main after #50). Scordelis-Lo moved by 1.4e-9 relative (an ill-conditioned thin shell of solids: sub-ulp node changes) and is re-blessed. Co-Authored-By: Claude Opus 5.5 <[email protected]> Claude-Session: https://claude.ai/code/session_01NmAttHhUZTokgPeEJia8sm * simplify: shared face filling and lattice index; faces blended like the volume; exact ends for every edge quad::transfinite_faces fills a block's six faces (with a per-face hook that hex::mapped uses to project onto its B-rep faces) and quad::lattice_index fixes the lattice layout for all three users. transfinite_grid_blended blends faces by the block's graded parameters, so faces and interior use one parametrisation and mesh.block reproduces its earlier Gordon-Hall lattice (the Scordelis-Lo fixture is back to its blessed value). Straight edges also return their corners exactly. Co-Authored-By: Claude Opus 5.5 <[email protected]> Claude-Session: https://claude.ai/code/session_01NmAttHhUZTokgPeEJia8sm --------- Co-authored-by: jyviko <[email protected]> Co-authored-by: Claude Opus 5.5 <[email protected]>
ModelCraft
An open-source, clean-room CAE modeling application in pure Rust: geometry to analysis-ready finite element models, with robust tetrahedral and hexahedral meshing, solver decks for Abaqus, Nastran and LS-DYNA, and its own linear static and modal solver. Desktop, browser and AI agents drive the same commands.
Status: early. The workspace, quality gates, the FE model, the command engine and the geometry boundary (SolidCraft's kernel and tessellator) are in place; meshing is next. See ROADMAP.md.
Build
cargo xtask ci # fmt, assets, licences, layers, clippy, tests, wasm
cargo xtask test --heavy # the heavy (ignored) tests and the doc tests
cargo run -p modelcraft-cli -- commands # every command and its parameters
cargo run -p modelcraft-cli -- run script.json # run a command script
cargo run -p modelcraft-cli -- mcp # MCP server on stdio for AI agents (docs/mcp.md)
Rust 1.95 or later, with the wasm32-unknown-unknown target for cargo xtask ci.
Documentation
- Architecture: crates, layers and the meshing pipeline
- Libraries and licences
- AI agents (MCP):
claude mcp add modelcraft -- /path/to/modelcraft-cli mcp - Control protocol: driving the desktop app
- Contributing and agent instructions
License
Dual-licensed under MIT or Apache-2.0, at your option. Notices are in NOTICE; third-party licences in THIRD-PARTY-LICENSES.txt.
ModelCraft is an independent project, not affiliated with, sponsored or endorsed by Dassault Systèmes, MSC Software, Siemens or Ansys. Abaqus, Nastran, MSC Nastran, Simcenter Nastran and LS-DYNA are trademarks of their owners and are named only to describe file compatibility.