Kratos MDPA Preview (VS Code extension)

Preview, organize, and manage Kratos Multiphysics .mdpa model-part files directly in VS Code: a 3D mesh viewer with a navigable ModelPart / SubModelPart outline whose entries are toggleable layers.

It is fully self-contained — a pure-TypeScript MDPA parser feeds a VTK.js viewer running in a webview. No Python or compiled Kratos is required.

Features

• 3D preview of nodes, elements, conditions, and geometries. Volume elements (tet/hex/wedge/pyramid) are shown as their boundary surface; quadratic elements are approximated by their corner nodes.
• Outline tree of the entity blocks and the full SubModelPart hierarchy, with per-row visibility checkboxes (activate/deactivate a layer) and click-to-frame.
• SubModelParts as layers — each SubModelPart is an independently toggleable overlay so you can isolate inlets/outlets/boundaries.
• Stats panel: node/element/condition/geometry counts, bounding box, detected 2D/3D, and any element type names that could not be mapped.
• Editor integration: mdpa language id with // comments, Begin/End folding, and syntax highlighting. The raw text editor stays the default; open the preview from the editor-title button, the explorer context menu, or the Open MDPA Preview command.

Develop

npm install
npm run compile      # bundle extension (dist/) and webview (media/) via esbuild
npm run watch        # rebuild on change
npm test             # parser unit tests (node:test) against repo fixtures
npm run typecheck    # tsc --noEmit

Press F5 in VS Code to launch an Extension Development Host, then open any .mdpa file (e.g. those under applications/*/tests/).

Layout

The Kratos name → VTK cell-type table mirrors the core kratos/input_output/vtk_definition.cpp and kratos/sources/kratos_application.cpp.