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OneCAD-Simulation/ROADMAP.md
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4667655e08 mesh: exact predicates (Shewchuk adaptive, symbolic perturbation, indirect LPI/TPI) (#8)
* mesh: exact predicates (Shewchuk adaptive orient/incircle/insphere), symbolic perturbation, indirect LPI/TPI predicates

Co-Authored-By: Claude Opus 5.5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01NmAttHhUZTokgPeEJia8sm

* mesh: predicate benchmark (filter hit rate, CAD-degenerate inputs); record the predicate decision

Co-Authored-By: Claude Opus 5.5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01NmAttHhUZTokgPeEJia8sm

* mesh: simplify predicates (destructuring over fallbacks, shared-minor exact insphere, cheaper expansion product)

Co-Authored-By: Claude Opus 5.5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01NmAttHhUZTokgPeEJia8sm

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Co-authored-by: jyviko <[email protected]>
Co-authored-by: Claude Opus 5.5 <[email protected]>
2026-10-13 15:04:56 -04:00

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Roadmap

ModelCraft's goal is CAE pre-processing on par with Abaqus/CAE, Nastran pre-processors and LS-PrePost, with hexahedral meshing as the centre of gravity, plus its own linear solver.

Milestone Scope Status
M0 Foundation Workspace, quality gates (cargo xtask ci), FE model, command engine with rollback and panic guard, CLI, geometry boundary on SolidCraft's kernel and tessellator done
M1 Surface preparation Geometry in: open .solidcraft designs, rebuilt by SolidCraft, with persistent face names (done); face-tagged 3MF files (geometry.import.mesh, docs/formats/tagged-mesh.md, done); exact predicates (Shewchuk adaptive, symbolic perturbation, indirect LPI/TPI, done); weld, closed/manifold/orientation checks and feature edges on the tessellated boundary; mesh quality metrics in progress
M2 Tetrahedral meshing Bowyer–Watson Delaunay, robust constrained Delaunay boundary recovery (Diazzi et al. 2023), Delaunay refinement to a size field, ODT smoothing, Klingner–Shewchuk sliver removal; linear and quadratic tets planned
M3 Hexahedral meshing (core) Octree/grid dual all-hex (valid on any input), then hex-dominant by tet recombination, then polycube for blocky parts; see docs/meshing/literature.md planned
M4 Model definition Materials, sections, sets and surfaces, boundary conditions, loads, steps, output requests planned
M5 Solver decks Abaqus input, Nastran bulk data, LS-DYNA keyword: writers first, then readers planned
M6 Linear solver Element library, sparse assembly, linear static and modal analysis, verified against analytic solutions planned
M7 Desktop and agents egui desktop app, control channel, MCP server, browser build planned
M8 Post-processing Results display: deformed shape, contours, probes planned