pwaLUPMIS2

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Author	SHA1	Message	Date
ekke	26c941b09a	Analytical tools Stage 1 + drawing-tool fixes Stage 1 of the GIS Analytical Tools concept — client-side spatial analysis: - src/analysis/overlay.js: vector overlays (intersect / clip / difference / union-dissolve) on Turf.js, reprojecting to WGS84 and merging attributes (intersect keeps both layers', clip keeps only A's). - src/analysis/zonal.js: vector-in-vector zonal statistics — count / sum / mean / min / max / total area per zone, with centroid-in-zone (default) or any-overlap membership. - Bounding-box pre-filtering in both: only genuinely overlapping pairs reach the expensive geometry test. 43 zones x 25,004 parcels now completes in ~106 ms; previously it was refused as too large. - src/analysis-modal.js + markup: Analysis panel with "Apply to" scoping — whole layer, current map view, selected features, or the catch of a drawn Circle/Area. Reached from a new "Analyse" dock button. - MapView.addCOGLayer() for Cloud-Optimized GeoTIFF display (WebGLTile + GeoTIFF source, imported lazily); listVectorLayers(); getSelectedFeatures(). - Circle/Area analysis popup: one "Export" button (PDF folded into the export modal as a fourth format, field-rename table hidden for it) plus an "Analyse" button that opens the panel pre-scoped to the intersecting features. - vite.config.js: code-split turf, geotiff and pako so the eager bundle is unchanged (~283 kB). Giving pako its own chunk also fixes a circular chunk between jspdf and geotiff, which share it via fast-png. Drawing-tool fixes carried in the same working tree: - Delete/Backspace key deletes the selection via the EditBar's Delete interaction (same undoable block as the button). - Multi-select: shift-click toggles, Ctrl/Cmd-drag box-selects; helper layers (vertex overlay, GPS) excluded. - Undo: split/merge/divide wrapped in undo blocks so one press reverses the whole operation; vertex-overlay churn no longer pollutes the undo stack; sources are re-scanned and the stack cleared when edit mode is entered, so deletes on sub-grouped layers are undoable. NOTE: the undo behaviour is not yet confirmed on-device. - ol-ext TouchCursor gated to touch-only devices, so hybrid touchscreen laptops keep the normal cursor. Service worker v12 -> v13. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>	2026-07-21 14:09:06 +02:00
ekke	ef12e4477b	Offline tile cache, polygon Divide, topographic layer integrations Major feature batch covering drawing-tool improvements, layer additions, and offline-first capabilities. Largest changes in MapView.js (+1700), main.js (+1500), public/sw.js (+367), and new modules under src/. Drawing & editing toolkit * Polygon Divide tool — sub-button under Split, divides a polygon into N equal-area pieces via binary search; user picks the cutting edge * UPN pick phase after Split and Divide — non-picked pieces have their identifier fields cleared automatically * Improved Merge algorithm — vertex-to-edge proximity (5 m tol.) with hybrid lockstep extension; bold A/B labels on selected polygons * Persistent vertex highlights — all vertices of the selected polygon rendered as dots while edit mode is on, without subclassing ol-ext * Toast notifications for merge/split/divide outcomes * Shapefile import — addGeoJSONLayer now includes an image style so Point features render (previously invisible) Background & overlay layers * DEAfrica Coastlines v0.4 (WMS) in Biophysical Environment * DEAfrica Slope (SRTM 30m, style_slope) — semi-transparent background * Contours hillshade — get_contours_hillshade.php → local SQLite cache * OSM_roads — get_osm_roads.php → local SQLite cache, casing-stroke style (black 3.5 px outer, #F0F1F0 1.5 px inner) * External Source dialog — green + button in LayerSwitcher lets users add WMS / WFS / XYZ layers at runtime * Generic addWMSLayer / addXYZLayer with style, opacity, zIndex, legendUrl, onlineOnly options * TileWMS replaces ImageWMS (fixes 'Width exceeds 512' WMS errors) * Legend panel — bottom-right, auto-shown for visible layers that register a legendUrl * Default base map setting in Settings, persisted in localStorage; setBaseMap() on MapView Offline tile cache (Phase 1 + 2) * Service worker: per-host tile caches (osm / topo / satellite / carto-light / carto-dark), counter-based eviction to prevent iOS Safari memory-pressure reloads, GET_TILE_STATS / CLEAR_TILE_CACHES message API * pwa.js helpers: getActiveServiceWorker, onServiceWorkerControllerChange, getTileCacheStats, clearTileCaches, getStorageEstimate * Settings: Offline Map Tiles card with per-provider stats + clear * Phase 2 download dialog: form to pick base map, area (current view / district / Ghana), zoom range; live tile-count + size estimate; progress bar with cancel; OfflineTileDownloader class with concurrency + throttling Local database management * osm_roads table + saveOSMRoads / getLocalOSMRoads helpers * CACHED_LAYER_TABLES allow-list with clearTable / clearAllCachedLayers * Local Database Tables card: per-row Clear button (cached layers only) + 'Refresh cached layers' header button with reload prompt Build & infrastructure * Shpjs lazy-loaded via dynamic import (saves ~140 kB from initial JS) * chunkSizeWarningLimit raised to 900 kB (openlayers + sqlite3.wasm can't be split further) * Toast notification module (src/toast.js) * Units module (src/units.js) for metric / imperial conversions * PDF export module (src/pdf-export.js) Documentation & SQL * Topographic_Background_Layers_for_LUPMIS2.docx — research report * OpenTopography_Workflow.svg/.png — ETL pipeline diagram * LUPMIS2_Development_Status_Report.docx — April update section * sql/create_landuse_parcels.sql — PostgreSQL schema for the LUSPA land-use parcel specification (Feb 2026, revised), with PostGIS geometry column and standard indices Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>	2026-05-26 10:55:30 +02:00

Author

SHA1

Message

Date

ekke

26c941b09a

Analytical tools Stage 1 + drawing-tool fixes

Stage 1 of the GIS Analytical Tools concept — client-side spatial analysis:

- src/analysis/overlay.js: vector overlays (intersect / clip / difference /
  union-dissolve) on Turf.js, reprojecting to WGS84 and merging attributes
  (intersect keeps both layers', clip keeps only A's).
- src/analysis/zonal.js: vector-in-vector zonal statistics — count / sum /
  mean / min / max / total area per zone, with centroid-in-zone (default) or
  any-overlap membership.
- Bounding-box pre-filtering in both: only genuinely overlapping pairs reach
  the expensive geometry test. 43 zones x 25,004 parcels now completes in
  ~106 ms; previously it was refused as too large.
- src/analysis-modal.js + markup: Analysis panel with "Apply to" scoping —
  whole layer, current map view, selected features, or the catch of a drawn
  Circle/Area. Reached from a new "Analyse" dock button.
- MapView.addCOGLayer() for Cloud-Optimized GeoTIFF display (WebGLTile +
  GeoTIFF source, imported lazily); listVectorLayers(); getSelectedFeatures().
- Circle/Area analysis popup: one "Export" button (PDF folded into the export
  modal as a fourth format, field-rename table hidden for it) plus an
  "Analyse" button that opens the panel pre-scoped to the intersecting
  features.
- vite.config.js: code-split turf, geotiff and pako so the eager bundle is
  unchanged (~283 kB). Giving pako its own chunk also fixes a circular chunk
  between jspdf and geotiff, which share it via fast-png.

Drawing-tool fixes carried in the same working tree:

- Delete/Backspace key deletes the selection via the EditBar's Delete
  interaction (same undoable block as the button).
- Multi-select: shift-click toggles, Ctrl/Cmd-drag box-selects; helper layers
  (vertex overlay, GPS) excluded.
- Undo: split/merge/divide wrapped in undo blocks so one press reverses the
  whole operation; vertex-overlay churn no longer pollutes the undo stack;
  sources are re-scanned and the stack cleared when edit mode is entered, so
  deletes on sub-grouped layers are undoable. NOTE: the undo behaviour is not
  yet confirmed on-device.
- ol-ext TouchCursor gated to touch-only devices, so hybrid touchscreen
  laptops keep the normal cursor.

Service worker v12 -> v13.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

2026-07-21 14:09:06 +02:00

ekke

ef12e4477b

Offline tile cache, polygon Divide, topographic layer integrations

Major feature batch covering drawing-tool improvements, layer additions,
and offline-first capabilities. Largest changes in MapView.js (+1700),
main.js (+1500), public/sw.js (+367), and new modules under src/.

Drawing & editing toolkit
  * Polygon Divide tool — sub-button under Split, divides a polygon into
    N equal-area pieces via binary search; user picks the cutting edge
  * UPN pick phase after Split and Divide — non-picked pieces have their
    identifier fields cleared automatically
  * Improved Merge algorithm — vertex-to-edge proximity (5 m tol.) with
    hybrid lockstep extension; bold A/B labels on selected polygons
  * Persistent vertex highlights — all vertices of the selected polygon
    rendered as dots while edit mode is on, without subclassing ol-ext
  * Toast notifications for merge/split/divide outcomes
  * Shapefile import — addGeoJSONLayer now includes an image style so
    Point features render (previously invisible)

Background & overlay layers
  * DEAfrica Coastlines v0.4 (WMS) in Biophysical Environment
  * DEAfrica Slope (SRTM 30m, style_slope) — semi-transparent background
  * Contours hillshade — get_contours_hillshade.php → local SQLite cache
  * OSM_roads — get_osm_roads.php → local SQLite cache, casing-stroke
    style (black 3.5 px outer, #F0F1F0 1.5 px inner)
  * External Source dialog — green + button in LayerSwitcher lets users
    add WMS / WFS / XYZ layers at runtime
  * Generic addWMSLayer / addXYZLayer with style, opacity, zIndex,
    legendUrl, onlineOnly options
  * TileWMS replaces ImageWMS (fixes 'Width exceeds 512' WMS errors)
  * Legend panel — bottom-right, auto-shown for visible layers that
    register a legendUrl
  * Default base map setting in Settings, persisted in localStorage;
    setBaseMap() on MapView

Offline tile cache (Phase 1 + 2)
  * Service worker: per-host tile caches (osm / topo / satellite /
    carto-light / carto-dark), counter-based eviction to prevent
    iOS Safari memory-pressure reloads, GET_TILE_STATS /
    CLEAR_TILE_CACHES message API
  * pwa.js helpers: getActiveServiceWorker, onServiceWorkerControllerChange,
    getTileCacheStats, clearTileCaches, getStorageEstimate
  * Settings: Offline Map Tiles card with per-provider stats + clear
  * Phase 2 download dialog: form to pick base map, area (current view /
    district / Ghana), zoom range; live tile-count + size estimate;
    progress bar with cancel; OfflineTileDownloader class with
    concurrency + throttling

Local database management
  * osm_roads table + saveOSMRoads / getLocalOSMRoads helpers
  * CACHED_LAYER_TABLES allow-list with clearTable / clearAllCachedLayers
  * Local Database Tables card: per-row Clear button (cached layers
    only) + 'Refresh cached layers' header button with reload prompt

Build & infrastructure
  * Shpjs lazy-loaded via dynamic import (saves ~140 kB from initial JS)
  * chunkSizeWarningLimit raised to 900 kB (openlayers + sqlite3.wasm
    can't be split further)
  * Toast notification module (src/toast.js)
  * Units module (src/units.js) for metric / imperial conversions
  * PDF export module (src/pdf-export.js)

Documentation & SQL
  * Topographic_Background_Layers_for_LUPMIS2.docx — research report
  * OpenTopography_Workflow.svg/.png — ETL pipeline diagram
  * LUPMIS2_Development_Status_Report.docx — April update section
  * sql/create_landuse_parcels.sql — PostgreSQL schema for the LUSPA
    land-use parcel specification (Feb 2026, revised), with PostGIS
    geometry column and standard indices

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

2026-05-26 10:55:30 +02:00

2 Commits