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]>
