The scene builds the page's Cesium engine right after the viewer
(src/app/globeEngine.js), names the startup Google tileset to it once
loaded, returns it beside the viewer and destroys it before the viewer.
The debug handle exposes it as window.__godsEyeView.engine. Nothing
consumes it yet; render holds taken before the governor is installed
apply at install.
qa-globe-contract now runs on the app's engine (self-built only when the
app has none); a throwaway engine checks creation and destroy leave the
scene untouched.
Map sources are applied through one src/maps/sceneApply.js helper shared by MapSourceController and engine.maps (live layer kept for an unchanged provider, providers cached per source). The contract gains flyTo endTransform and rectangle destinations, flyToSphere easing, drillPick width/height and pick content, with Cesium's own flyToSphere range. Input skips listeners removed during dispatch and stays inert after destroy.
createCesiumEngine wraps an existing viewer without changing it: camera, picker, projector, frames, render (through the render governor), surface, input, credits and maps, with geo values out and Cesium values in at the boundary. Map and surface code is shared with src/maps and services/groundSnap instead of copied. scripts/qa-globe-contract.mjs runs the contract suite against the engine in headless Chrome; the camera-events check now waits for the previous move to end, as Cesium's moveStart marks a move from rest.
FlightOptions and setView now state Cesium's defaults for missing angles
(heading 0, pitch -pi/2, roll 0), enforced by a contract-suite check. The
suite also checks a horizon-bounded view rectangle and an undefined one
when the camera looks away from the Earth.
Engine events get their own documented semantics (single registration,
branded instances); the fake follows Cesium's roll sign, angle ranges,
synchronous zero-duration flights, flyToSphere defaults and
computeViewRectangle. The contract adds viewProjection, horizonVisible,
flightActive, lookAtTransform/transform, zoomIn/zoomOut, input modifiers,
terrainHeight and clampToHeight, with geometric suite checks. Engine
import rules now follow each engine graph transitively.
src/globe/contract.js defines the engine-neutral GlobeEngine capabilities
(JSDoc), createEngineEvent with Cesium.Event semantics and
assertGlobeEngine. src/globe/testing adds a geo-based fake engine for shell
tests and an engine-agnostic contract suite that the fake passes in Node.
check-import-directions keeps the contract free of cesium, three and
@navaramap, and each engine directory free of the other engine.
The draped coverage line is about one pixel wide and can sit on a pixel
boundary: the probe hit at a fractional x while the click at the integer
pixel missed. Wait for tiles, click only at an integer pixel that picks the
line right before the click (off the centre column first), retry up to 4x.
Street level view/cameraFollow/groundClick/index, traffic footprint/viewport/ingestion, transit viewport/trails/state/rendering, FIRMS state/viewport, installations controls/viewport/state, radio queries/navigation/state, bikeshare viewport, submarine cable overlay and data/detection now use src/geo for Math, Cartesian2/3, Cartographic and WGS84 maths. Cesium stays for Rectangle, Ray, BoundingSphere, HeadingPitchRange, EasingFunction, EllipsoidGeodesic, EllipsoidalOccluder and the Ellipsoids passed into Cesium (pickEllipsoid, occluders). traffic/state.js keeps its Cesium lerp scratch (written per frame by Cesium.Cartesian3.lerp in animation.js; a geo scratch cost +4-7% there) and traffic/timing.js stays on Cesium (a test keeps it source-equivalent to model.parseRoads, outside this batch). street-level-layer, traffic-layer, installations-layer, bikeshare-layer and submarine-cables own the src/geo files.
Launches selection/replay/panel/policy/policyHelpers/state/camera, CCTV geometry/model/projection/navigation/cards/geometryQueue/state and ALPR model/visuals now use src/geo for Math, Cartesian2/3, Cartographic, Matrix3/4, Quaternion and ENU frames. launches/paths.js keeps Cesium (EllipsoidGeodesic). In camera.js, EllipsoidGeodesic, BoundingSphere.fromPoints/union and the BoundingSphere constructor stay on Cesium; the geo Cartographics passed into EllipsoidGeodesic are only read field by field and cloned there (computeProperties). The CCTV plane orientation stays a Cesium Quaternion and plane dimensions a Cesium Cartesian2 (entity ConstantProperty values). launches-layer and alpr-cameras own the src/geo files.
Dead reckoning, the grounded display floor, snapshot rendering, queries and layer scratch state now use src/geo. Outputs are bit-identical to the previous batch (frozen-clock probe over flights, military, local ADS-B and orbits); per-frame paths are as fast as base 132b9e96 or faster (see docs/migration/phase1a-report.md).
Moves the Cartesian3/Cartographic/Matrix3/Matrix4/Math calls of the vessel, satellite and Contacts (awareness) layers, plus flights controller/enrichment, to src/geo. The satellites-layer package boundary now owns the src/geo modules. Awareness keeps Cesium.Cartesian3.clone for the resolved subject position, which reaches the installations anchor (anchor.test pins a Cesium instance).
Move the Cartesian3/Cartographic/Matrix4/Transforms/Ellipsoid/Math calls of
the second batch (cockpit camera, context and controller; camera orientation
controls; application shell; location navigation; the annotation resolver
and engine; voice actions and pointer pick; the scene director; the embed
app) to src/geo. Behaviour is unchanged: same argument order, same `result`
semantics.
Kept on Cesium: out-of-scope classes (HeadingPitchRange, BoundingSphere,
Intersect, EllipsoidalOccluder, EasingFunction, SceneTransforms, JulianDate),
WGS84 where it goes into pickEllipsoid or EllipsoidalOccluder,
Matrix4.IDENTITY handed to lookAtTransform, and the Cartesian2 window
positions that reach scene.pickPosition: Cesium keys its per-frame pick
cache on windowPosition.toString(), which a plain object would collapse to
one "[object Object]" key.
The Contacts-subject harness in gevActions.test stubbed
Cesium.Cartographic.fromCartesian to place its subject; it now builds a real
subject position at the same coordinates with geo.cartesian3.fromDegrees.
The cockpit-controls and scenes package-boundary groups now own the src/geo
files.
Move the Cartesian3/Cartographic/Matrix/Quaternion/Transforms/Math calls of
the first batch (src/data motion, anchor, tracked-camera and icon helpers;
the root camera, locations, HUD, share-link, world-focus, ground-guard,
orbit and cloud modules; services/groundSnap) to src/geo. Behaviour is
unchanged: same argument order, same `result` semantics.
Kept on Cesium: out-of-scope classes (JulianDate, Axis, HeadingPitchRange,
BoundingSphere, Rectangle, EasingFunction, EllipsoidalOccluder with its
WGS84 and seed vector, SceneTransforms) and Matrix4.IDENTITY wherever it is
handed straight to a Cesium camera call (locations.test pins its identity).
synthesizeForwardKinematicsFix now returns a plain position, so the two
snapshot renderers clone it with the static Cesium.Cartesian3.clone instead
of the instance method. The package-boundary groups that reach these
modules now own the src/geo files.
An engine-neutral port of the CesiumJS 1.138 core maths gev uses: angle
maths, the WGS84 ellipsoid and geodetic coordinates, 2D/3D vectors, 3x3/4x4
matrices, quaternions and local east-north-up / heading-pitch-roll frames.
Formulas and operation order match Cesium, so outputs are bit-identical
(golden tests pin the centre, pole, -0 and quaternion branches).
- Values are plain-data instances of module-private constructors (own
enumerable fields only), so geo's hot functions keep their own V8 hidden
classes; matrices are plain column-major arrays Cesium accepts.
- Cesium's debug argument checks are ported with the same conditions, order
and DeveloperError messages, gated on DEBUG (src/geo/debug.js): on in Node
and the dev server, folded away by vite build, as Cesium's Build strips
them. A release-parity test compares DEBUG=false geo with Build/Cesium.
- The import-direction check forbids cesium and @cesium/* in src/geo;
CODE-BOUNDARIES.md and THIRD_PARTY_NOTICES.md document the port.
German Khokhlov