Workbench

The Workbench runs Blaze2D in your browser. It uses the same configuration and numerical defaults as Python, with an f64 backend.

Choose a model. Open the Examples tab, inspect a calculation, and select Load example. Its geometry, task, settings, and sweeps fill the workspace together. You can also import a TOML file.
Configure a study. The Setup sidebar has Crystal and Calculation controls. Geometry shows the crystal; Study shows the reciprocal-space path and calculation plan. Choose bands or operators, sampling, sweep axes, and retained outputs in Calculation.
Run. Start the calculation and inspect its progress. Cancel stops the browser worker immediately. Completed jobs remain available.
Inspect. Results contains band plots, arrays, dimensions, and convergence information. Select a configuration or stencil sample to inspect its data.
Export. Download NPZ, JSON, NDJSON, or the selected run's original TOML. History stores recent runs on this device.

The Geometry preview repeats the crystal and marks one unit cell. Switch between Geometry and Dielectric grid, or change the number of visible periods. Fractional and Cartesian change how object centers are displayed and edited; the saved configuration uses fractional coordinates, wrapped into the unit cell.

Split view opens a second editor group. Choose a tab in either group to place geometry beside results, TOML beside the preview, or examples beside your study. Drag the divider, or focus it and use the arrow keys, to adjust the widths. On small screens the groups stack vertically. Setup shows or hides the controls.

TOML is an editor tab that shares its configuration with the visual controls. Edits require Apply or Revert. An invalid or unapplied draft blocks execution and structured editing. Normalize expands defaults, removes comments, validates the result, and applies it. A completed result always keeps the configuration used for that run. The live band's horizontal axis uses the complete planned path, so arriving points do not rescale it.

The eigensolver stopping tolerance measures relative eigenvalue changes. Operator results also contain fresh residuals and an orthogonality defect. Use an explicit residual acceptance threshold when the study requires one.

The browser preflights a 512 MiB execution budget. History uses a bounded local cache; export important results before leaving. Use Python for larger studies, external dielectric arrays, reference fields, or checkpointed runs.

See Examples in the Workbench and API & TOML for reusable calculations and the coordinate and array conventions.