Cesium 3D Tiles reference

Namespace: DawnCesium. Public headers live under Gems/Cesium3DTiles/Code/Include/Cesium3DTiles/.

Components (checklist)

Area	Runtime component	Notes
Georeference	`CesiumGeoreferenceComponent`	Level origin / ellipsoid
Tileset	`Cesium3DTilesetComponent`	One 3D Tiles dataset
Overlays	`CesiumIonRasterOverlayComponent`, Bing, TMS, WMS, WMTS, UrlTemplate, Google Map Tiles, Azure Maps, GeoJSON, Vector Tiles, Polygon, Debug Colorize	Same entity as tileset
Polygon	`CesiumCartographicPolygonComponent`	LLH rings
Excluder	`CesiumTileExcluderComponentBase`	Subclass for custom predicates
Anchor	`CesiumGlobeAnchorComponent`	LLH ↔ Transform
Origin shift	`CesiumOriginShiftComponent`	LargeWorld render origin
Flight	`CesiumFlyControllerComponent`, `CesiumFlyToComponent`	Play-mode fly / scripted fly-to
Sub-level	`CesiumSubLevelComponent`	Geographic Prefab switch
Camera	`CesiumCameraManagerComponent` (+ system component)	LOD frustum aggregation
Environment	`CesiumSunSkyComponent`, `CesiumCreditSystemComponent`	Lighting / attribution
Metadata	`CesiumFeaturesMetadataComponent`, `CesiumVoxelMetadataComponent`	Schema / voxel shading
Vectors	`CesiumGeoJsonDocumentComponent`	Document API
Capture	`CesiumVtCaptureComponent`	Runtime VT-style capture
Bridges	WorldStreaming / Terrain / NavMesh bridge components	Optional; sibling Gems required

Editor wrappers are EditorCesium* counterparts under Code/Source/Tools/.

Common EBuses

Bus	Typical use
`CesiumGeoreferenceRequestBus`	LLH ↔ ECEF ↔ engine transforms; set origin
`CesiumEllipsoidRequestBus`	Ellipsoid radii / asset queries
`Cesium3DTilesetRequestBus`	Refresh, SSE, suspend, sample heights, materials, tile handles, offline render
`Cesium3DTilesetNotificationBus`	Loaded / load failure / heights sampled / overlay failures
`CesiumRasterOverlayRequestBus` (+ per-type buses)	Overlay attach / refresh
`CesiumGlobeAnchorRequestBus`	Move to LLH / ECEF; orientation
`CesiumOriginShiftRequestBus` / `NotificationBus`	Mode, thresholds; origin shifted
`CesiumFlyControllerRequestBus`	Yaw / pitch
`CesiumFlyToRequestBus` / `NotificationBus`	Scripted flights
`CesiumSubLevelSwitcherRequestBus`	Active sub-level control
`CesiumCameraBus`	Custom LOD cameras
`CesiumSunSkyBus`	Date, solar time, atmosphere knobs
`CesiumCreditBus`	Attribution queries
`CesiumMetadataRequestBus`	Hit picking / statistics
`CesiumGeoJsonDocumentBus`	Feature / geometry queries
`CesiumVoxelBus`	Voxel cell sampling
`CesiumVtCaptureBus`	Capture status / UV transform
`CesiumCartographicPolygonBus`	Polygon vertices
`CesiumTileExcluderBus`	`ShouldExcludeTileEx`
`CesiumTileLifecycleBus`	Tile load / unload
`CesiumBridgeBus`	Bridge mode / stats helpers
`CesiumIonGeocoderRequestBus`	Place-name geocoding
`Cesium3DTilesSystemRequestBus`	`ClearRequestCache`

BehaviorContext / ScriptCanvas reflections cover the primary request and notification surfaces used by designers. See Reference for the primary request and notification surfaces.

Asset types

Extension	Purpose
`.cesiumionserver`	Private / self-hosted ion server (URL, API, default token, OAuth app id)
`.cesiumellipsoid`	Named ellipsoid radii (WGS84 / Moon / Mars shipped with the Gem)

Asset Processor settings: Gems/Cesium3DTiles/Registry/assetprocessor_settings.setreg.

Default materials / shaders: Gems/Cesium3DTiles/Assets/Materials/ (CesiumTileDefault), Assets/Shaders/Cesium{PointCloud,Line,Splat,Voxel,VtCapture,OcclusionQuery}.*.

Settings quick links

Gem defaults: /O3DE/Gems/Cesium3DTiles/* — see Configuration and debugging
HTTP: /O3DE/Cesium3DTiles/Http/*
Bridge: /O3DE/Cesium3DTiles/Bridge/*
Diagnostics: /O3DE/Cesium3DTiles/Diagnostics/*

Next steps

Getting started if you have not built a scene yet.
Double-precision rendering and World Streaming for large-world stack pairing.
Navigation3D for air navigation over Cesium terrain.