Release v0.4.2 · janosh/matterviz

9 July 2026

Add zoomable Treemap hierarchical charts (squarified nested rectangles with click-to-zoom, breadcrumb pathbar, branch header strips, legend muting, metric coloring, and SVG/PNG export) sharing Sunburst tree semantics and data builders so switching charts is a one-line change #372
Add VASP 6 HDF5 support: vaspout.h5 trajectories (torn-file recovery, SCF pseudo-frames), electronic bands/DOS-only views, and vaspwave charge-density volumetrics, with VS Code webview routing for vaspout_electronic and TrajectoryWithDos #372
Add StructureCarousel for browsable structure cards (virtualized WebGL mounts, keyboard/wheel paging, resizable track, portaled pager) plus a demo page #372
Add opt-in HeatmapTable row virtualization with a controls_target portal for host-header search/export/settings #372

Fit-aware hierarchy labels: ordered fallback chain (extended → label → compact label_short), Sunburst font downscaling, and auto rotation that tries the other orientation before hiding text on narrow arcs/cells #372
Smooth carousel scrolling by promoting entering cards to live WebGL canvases at most one per ~200ms mid-scroll (label shells first; remaining mounts on settle) #372

Harden HDF5 parsing against torn/corrupt files (keep frames before a bad trailing step as dropped_steps, constant-cell torch-sim normalization, vaspwave shape checks, gzipped .traj binary fast-path) #372
Fix stale DraggablePane viewport clamps (including legitimate top: 0px), HeatmapTable virtual-scroll/selection edge cases, carousel vertical page sizing, and bond-deletion e2e framing after ensure_lattice_params #372

Deduplicate Sunburst/Treemap into shared hierarchy-chart helpers and a single HierarchyControls keyed by chart type; collapse duplicated sunburst/treemap settings into one factory #372
Split the VS Code webview parse path into worker-safe parse.ts, unify SCF frame metadata helpers, and trim carousel/table internals (opt-in virtualization, ID-indexed row selection) #372

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Full Changelog: v0.4.1...v0.4.2