A KMZ could name one large packed image in thousands of <href>s, and each
one made a fresh Blob copy for Cesium to decode. kmzImageResolver now keeps
one blob URL per archive entry, and countKmlGeometry refuses a document
with more than 2,000 <href> and <Style> elements (MAX_KML_LINKS) before
Cesium reads it.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
- Imported metadata stays inert: descriptions, native labels, properties and
KML extended data are dropped from every entity; names are kept as short
plain text. GeoJSON loads with a describe that builds no HTML, and
simplestyle (including marker-symbol) is dropped, so no icon asset is
fetched for a file and GeoJSON draws in its row's color.
- Bound geometry before loading: features and vertices are counted in the
parsed GeoJSON, the KML document and while reading GPX, and a file over
20,000 features or 250,000 vertices is refused before Cesium builds it.
- Imports run one batch at a time, so concurrent picks or drops cannot pass
the 12-file cap.
- Fly-to framing walks long tracks by index instead of spreading them into a
call.
- Fly-to is an immediate navigation through the application shell; the fly
after an import is a deferred navigation stamped when the batch starts and
re-asserted just before flying.
- Dated imports never change the shared clock: imported sources expose no
clock, entities are available for all time, and a KML gx:Track is drawn as
its line.
- GPX is read into GeoJSON with one line per track segment, without times.
- KML/KMZ rows show a hatched swatch (they keep their own styles); keyboard
focus is kept on the same control after hide/show and moves to the next
row after remove.
- Unit regressions for each, and the rendered QA now imports hostile
metadata, dated KML/GPX and a two-segment track, and fails on any request
for a file's contents or icon assets, a clock change, or surviving
metadata.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
viewer.flyTo frames ground-clamped billboards before the destination's
terrain has loaded, and their bounding sphere then sits kilometers below
the surface: flying to a points-only GeoJSON from another city left the
camera about 2.3 km underground (a black screen). Frame the features'
longitudes and latitudes at the surface instead, and let the existing
camera ground guard lift the eye once the terrain can be measured
(src/ui/flyToDataSource.js, with tests).
Co-Authored-By: Claude Opus 5.5 <[email protected]>
DISPLAY ▸ Import (and drop onto the globe) puts the person's own files on
the map as Cesium data sources, clamped to the ground, one color per file,
with a row to show/hide, fly to or remove each. Files stay in the browser
for the session.
KML/KMZ are sanitized before Cesium reads them (network links, remote
icons/styles, models, photo/screen overlays and balloon HTML removed; KMZ
images served from blob URLs), so an imported file cannot make the page
fetch anything. KMZ is read with a small dependency-free zip reader on the
platform DecompressionStream, with a zip-bomb limit. Bounded file size,
entity count and number of files.
Tests: src/data/geoFileImport.test.mjs, src/ui/geoFileImport.test.mjs.
Gate: scripts/qa-geo-import.mjs. The import half of #890.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
