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Cesium for Omniverse v0.24.0

Cesium for Unity Samples v1.15.4

CesiumJS 1.127

Cesium for Unreal

In February, we explored enhancements to our lighting system in CesiumJS, attended Geo Week and the LA Geospatial Summit, and opened registration for the 2025 Cesium Developer Conference. Join us in June for technically oriented, community-driven tracks at our inaugural event. 

We made improvements across Cesium this month. To get notifications about our monthly releases, you can subscribe to the Cesium release roundup thread on our community forum.

CesiumJS 1.127 is now available. Highlights of the release include:

Updated Cesium3DTilesVoxelProvider to load glTF tiles using the new EXT_primitive_voxels extension to more closely align with the rest of the 3D Tiles ecosystem. Tilesets using the previous custom JSON format are no longer supported. #12432 

Updated the requestData method of the VoxelProvider interface to return a Promise to a VoxelContent. Custom providers should now use the VoxelContent.fromMetadataArray method to construct the returned data object. 

TextureAtlas has been refactored and internal APIs have been updated. 

Implemented texturesByteLength, visited, and numberOfTilesWithContentReady in VoxelPrimitive.statistics. 

Procedurally generated box voxels in CesiumJS.

Cesium for Unreal v2.14.0 is now available. Highlights of this release include:

Added support for drawing 3D Tilesets to Runtime Virtual Textures. 

Added support for "enum" properties in EXT_structural_metadata. 

"External Tilesets" are now unloaded when they are no longer used. This will significantly reduce the growth of memory usage over time when using Google Photorealistic 3D Tiles and similar tilesets. 

Check the Cesium for Unreal release and the Cesium for Unreal Samples release for the full list of updates.

Download the Cesium for Unreal plugin from Epic Marketplace

Left: building roofs overlaid onto the Cesium OSM Buildings tileset using a Bing Maps Raster Overlay. Right: building roofs overlaid onto the Cesium OSM Buildings tileset using the new Runtime Virtual Texture support in Cesium for Unreal v2.14.0.

Cesium for Unity v1.15.4 is now available. Highlights of this release include:

Check the Cesium for Unity changelog for the full list of updates, and follow our Cesium for Unity tutorials to get started. 

Comparison of memory usage from loaded tiles over time in Cesium for Unity v1.15.3 as compared to the new release, Cesium for Unity v1.15.4.

Assets now support multi-selection for deleting multiple assets at once. 

Cesium Stories annotations provide an option to show the name of the annotation in the 3D view. 

Added the ability to import source data from Azure and export tiled asset data to Azure. This must be enabled under the features section of values.yaml. 

Cesium Stories now include annotation features for points, polygons, and polylines. 

Assets page now supports multi-selection for deleting multiple assets at once. 

A new installer script is available to assist with single node installations using Microk8s. 

New tabs are now available on the Administration panel when running with SAML mode. These tabs allow administrators to view the users in the system, upload an asset to a user's account, delete assets from a user's account and re-run failed jobs through the UI. 

The Administration panel now also provides access to the logs of a failed job through the Cesium ion UI. 

Tiler updates will be available this month. Highlights will include: 

- Major announcements 
    - The design tiler will be included in the official 3D Tiling Pipeline release. 
    - The `tilers` executable will be split into separate executables: `reality-tiler` and `design-tiler`. 

- Design Tiler 
    - Add support for line and point primitives. 
    - Add support for IFC metadata. 
    - Meshopt compression applied to instance attributes. 
    - Input models that don't contain metadata pickable. 
    - Fix reading .obj models. 
    - Fix bug where Draco compression would sometimes generate extra vertices. 
    - Fix bounding volume alignment when geometry is far away from the origin. 
    - Fix texture coordinate scaling when input model uses `KHR_texture_transform`. 
    - Improve coordinate conversion for instanced geometry. 
    - Variety of metadata related improvements. 

- Clip Tileset 
    - Fix a bug that could cause `clip-tileset` to excessively upsample while clipping tilesets with raster overlays. This could cause the process to take an excessive amount of time, or to run out of memory and crash. 

- Reality Tiler 
    - Remove support for the `--sanitize-error-logs` CLI flag; paths in error logs are now always sanitized by default.
    - Add support for tiling models with vertex colors. 

Check the changelogs for the full list of updates for Cesium ion SaaS and Cesium ion Self-Hosted.

In January, we shared our code review guide, which we recently created and made available in our new public community repo, celebrated Danny’s Patriot Award from Pennsylvania Employer Support of the Guard and Reserve, and began calling for presentations for the 2025 Cesium Developer Conference. We look forward to seeing you in Philadelphia in June!

CesiumJS 1.126 is now available. Highlights of the release include:

Add ITwinData.loadGeospatialFeatures(iTwinId, collectionId) function to load data from the Geospatial Features API. #12449

Fixed error when resetting Cesium3DTileset.modelMatrix to its initial value. #12409

Fixed the parameter types of the ClippingPolygon.equals function and fixed cases where parameters to equals functions had erroneously not been marked as 'optional'. #12394

Fixed Draco decoding for vertex colors that are normalized UNSIGNED_BYTE or UNSIGNED_SHORT. #12417

Cesium for Unreal v2.13.1 is now available. Highlights of this release include:

Added CesiumUrlTemplateRasterOverlay, allowing a raster overlay to be added using tiles requested based on a specified URL template.

Added EstimateTimeZoneForLongitude method to ACesiumSunSky to set a reasonable TimeZone value at the given longitude.

The "Place Georeference Origin Here" button on ACesiumGeoreference will now adjust the time zone of the ACesiumSunSky instances that reference it, based on the new origin's longitude. This improves user experience when moving the origin to locations where it would be nighttime in the current time zone. A new EstimateTimeZoneForLongitude method on ACesiumSunSky can also be invoked manually from C++ or Blueprint.

Added RequestHeaders property to Cesium3DTileset, and the various Raster Overlay classes, allowing custom headers to be specified.

Worked around a limitation in Unreal's FMatrix -> FTransform conversion that prevented models with a small scale factor (e.g., where vertex positions are expressed in millimeters) from rendering because their scale was treated as 0.0.

Cesium for Unity v1.15.1 is now available. Highlights of this release include:

Exceptions in either C# or C++ code are now handled much more reliably.

Snowdon Sample Model from Autodesk Revit, streamed with 3D Tiles and visualized using Cesium for Unity. Featured in Level 08_CesiumArchitecturalDesign in Cesium for Unity Samples.

Cesium OSM Buildings and Cesium OSM Buildings for Cesium World Bathymetry datasets have been updated based on the OSM Timestamp of Jan 13 00:00 GMT 2025.

In addition to the Bing geocoder, Cesium ion now provides the Google geocoder for use in your applications. See this sandcastle for implementation.

In addition to the Bing geocoder, the Google geocoder is now available to applications using Cesium ion Self-Hosted when your Self-Hosted installation is connected to your Cesium ion SaaS account. See this sandcastle for implementation.

Cesium ion Self-Hosted v1.6.0, including the ability to upload data from Azure for tiling, will be released no later than early March 2025.

DroneDeploy enables stakeholders to examine the entire life cycle of a project with its drone software and viewer, which use 3D Tiles and Cesium ion Self-Hosted to make massive photogrammetry datasets manageable and accessible. With Cesium’s 3D Tiling Pipeline, DroneDeploy puts its engineering resources into its custom viewer rather than model processing, and users get photorealistic 3D models for decisions based on reality.

Capture high-resolution aerial data to align teams and keep AEC projects on track. Courtesy DroneDeploy.

DroneDeploy Map Engine

Code review is at the heart of what we do at Cesium. In this blog we discuss core principles around our review process and introduce our code review guide, which we recently created and made available in our new public community repo. At Cesium we maintain multiple open source repositories, most notably our runtime libraries for visualizing geospatial graphics on the web (CesiumJS) and via native engines (Cesium Native, Cesium for Unreal, Cesium for Unity, and Cesium for Omniverse), and since 2012 we have been making monthly releases of these libraries. CesiumJS alone has close to 250,000 lines of source code and 280,000 lines of test code. We also maintain Cesium ion SaaS and Cesium ion Self-Hosted, platforms for tiling, hosting, and streaming 3D geospatial data as 3D Tiles. To top it off, Cesium projects are built collaboratively between the community and the core team, with more than 300 external contributors committing source code to CesiumJS and dozens contributing commits to our native runtimes. 

Maintaining projects at this scale and in open source is not possible without strong engineering processes. Pull requests (PRs) and code reviews—more than most any other engineering process—are where rules are enforced and culture is built. Cesium has structured our guide to reinforce the core values of our engineering teams: Enhance code quality and consistency, streamline collaboration, facilitate knowledge sharing, and foster shared ownership. You may notice our guide doesn’t drill deep into language and framework-specific practices; we designed it as an overarching framework that can be augmented with specific tooling or style guides for our individual projects.

Here are the key principles at work in our guide. 

Tone: Seek great code and motivated people

We often say, "comments are about the code, not the people." We believe review comments are positive opportunities to discuss and improve. Our guide suggests using guiding questions and presenting evidence. Questions invite discussion and are a more gentle way to suggest changes. Every suggestion should be able to link to an authoritative source, like the project's coding guide, rather than relying on the reviewer's opinion. Empathy on the reviewer's part can go a long way toward keeping the contributor motivated in the review process.


Code review cannot happen without well organized projects, and we lean heavily on Git to organize our engineering projects. Git branches and branch protection rules enable collaboration and help us avoid forcing work in progress upon others before it's ready. Our guide advises keeping branches as focused as possible, avoiding mixing large-scale, cross-cutting changes with other changes. We suggest breaking complex changes into a sequence of smaller pull requests, each of which builds upon the previous. Lastly, we caution to avoid rebasing to preserve a usable version history.


Open timely and scoped PRs that create a historical record

We believe PRs should be small, targeted, and atomic. The PR author should create tasks lists covering and linking to all additional work required before merging. Team members should start code review and respond promptly (within 24 hours) to maintain momentum and investment from the author. Pull requests serve as a historical record of a change, so it is important to document the context of the pull request to help preserve it for future reference. The author should include why the change is being made and the test plan with steps and configuration needed to verify the change. Linking is an effective tool for documenting context: We create links to relevant issues (in the current repository or other projects), community forum posts or support threads, standards or API documentation, changelogs for dependencies, and best practices, such as blogs or guides.


Communicate status with automation, CI, and GitHub tooling

No matter the project, our guide advises using Github Actions workflows as part of continuous integration (CI) processes to enforce style guidelines through linting, code quality through unit tests and code scanning, and security through secrets checking and vulnerability scanning. The specific implementations of these checks depend entirely on the language and other features of the project, but automating them, as our guide recommends, streamlines and strengthens the code review process. The reviewer should ensure all checks pass and check artifacts for each stage to ensure that there are no “silent failures.”

Reviewers should maintain velocity by being concise and direct in their comments, avoiding the temptation to expand scope of the PR, and always trying to level up the team by providing impactful feedback that will then be sought after by other engineers. Our guide provides an overview of the critical areas a reviewer should look at before approving a PR, including design, execution, performance, complexity, third-party libraries, style, tests, and documentation of the code changes. 

Approving and merging a pull request means that the reviewer is accepting some responsibility for the code being merged. The author of the code is still largely accountable for any critical issues that immediately arise, but the reviewer shares some accountability as well. In practice, reviews differ by level of toughness depending on the change, which we thought was valuable to break as follows:

Rubber stamp: suitable for pull requests that only deal with documentation.

Skim the code and ensure all CI automation is passing: suitable for small pull requests.

Compile locally and run the code: suitable for most pull requests.

Deep read of the code changes: suitable for most large pull requests.

Synchronously review one-to-one with the author: suitable for giant pull requests.

Lastly, reviews should be public. If the reviewer and author meet in a video call or in a room, the reviewer should summarize the discussion in a PR comment. This helps everyone looking at the PR later and ensures we are transparent about the life of the PR.

Our guide calls out important steps embedded in our code review process for maintaining consistency and usability of our public APIs. Changelogs and release notes should provide clear and open communication about project updates, while also managing user expectations and promoting new features. The code review should ensure the PR meets the following expectations critical for public facing APIs:

Have a versioning strategy: If the changes are significant or potentially break backward compatibility, verify that the project is prepared for a version bump in accordance with its versioning strategy, e.g., according to semantic versioning principles.

Highlight deprecations and breaking changes: Clearly mark any deprecations or breaking changes in the PR description.

It is sometimes necessary to reject a pull request, in particular to maintain the project’s scope. When doing so, first begin with thanks and acknowledge the contributor’s needs as valid, even if the contribution doesn’t align with the project’s goals. Then be clear and constructive about why the PR does not fit with the project. Following that, present the author with ways out, such as a workaround or forking the repo. And finally, encourage them to contribute again in the future.  

Our code review guide is a living document that can be edited and expanded as needed, so it can and will change over time. Cesium has designed our guide to be a forward-looking overarching framework, which can then be implemented as specific guides for individual projects. 

We invite anyone to open issues with feedback or submit PRs with suggestions about our new guide in our community repo, which houses the guide on GitHub.

Building Culture and Community with Code Reviews

In December, we announced the release of the Cesium Design Tiler and Cesium ion for Autodesk Revit Add-In and dug into Reality Tiler v2. Did you keep an eye on Saint Nick with NORAD Tracks Santa on Christmas Eve?

The Cesium Design Tiler and Cesium ion for Autodesk Revit Add-In are now available.

Cesium Design Tiler

CesiumJS 1.125 is now available. Highlights of the release include:

Expanded the integration with the iTwin Platform to load GeoJSON and KML data from the Reality Management API. Use ITwinData.createDataSourceForRealityDataId(iTwinId, realityDataId) to load data as the corresponding Data Source. #12344

Added environmentMapOptions to ModelGraphics. For performance reasons, the environment map will not update if the entity position changes by default. If environment map updates based on entity position are desired, ensure to provide an appropriate environmentMapOptions.maximumPositionEpsilon value. #12358

Reduced memory usage and performance bottlenecks when using environment maps with models. #12356

Fixed JulianDate to always generate valid ISO strings for fractional milliseconds. #12345

Fixed intermittent z-fighting issue. #12337

iTwin Reality Feature Service results displayed as GeoJSON with iTwin Reality Point Cloud data in CesiumJS.

Cesium for Unreal v2.12.0 is now available. Highlights of this release include:

Removed support for Unreal Engine 5.2. Unreal Engine 5.3 or later is now required.

Renamed FCesiumFeatureIdAttribute::GetFeatureIDForVertex to FCesiumFeatureIdAttribute::GetFeatureID.

Renamed FCesiumFeatureIdAttribute::GetVertexCount to FCesiumFeatureIdAttribute::GetCount.

Added support for metadata querying and styling on instanced models.

Fixed a bug in CesiumSubLevelSwitcherComponent that could prevent all sub-levels from loading if a single sub-level failed to load.

This release updates cesium-native from v0.42.0 to v0.43.0. See the changelog for a complete list of changes in cesium-native.

Cesium for Unity v1.14.1 is now available. This is the last release of Cesium for Unity that will support Unity 2021 LTS (2021.3). Future versions will require Unity 2022 LTS (2022.3) or Unity 6.

Fixed a bug that could cause a crash on AppDomain reloads.

Fixed a bug that could cause a crash or incorrect textures when multiple Cesium3DTileset tiles referenced the same image by URL.

Fixed a bug that could cause incorrect colors in a model that did have vertex colors but did not have normals.

Fixed a bug that could cause a hang when attempting to load a model with UINT16 indices where generating flat normals required more than 2^16 vertices.

Fixed a bug in the Abseil vcpkg overlay port that could cause linker errors on some systems.

The new Cesium Design Tiler tiles IFC and glTF models into 3D Tiles. Read more.

The Cesium ion for Autodesk Revit Add-In is available on the Downloads page. This Add-In uploads your current 3D View directly to Cesium ion and tiles it with the Design Tiler to produce 3D Tiles.

Cesium Stories now include annotation features for points, polygons, and polylines. Check out an example here.

The new Design Tiler is now available in the Self-Hosted UI as well as the Self-Hosted CLI.

Cesium ion Self-Hosted has been updated to include more secure container-based images. This is part of a continuing effort to increase the security of the Self-Hosted version of Cesium ion.

Exposed the double-sided option for 3D Models and 3D Capture on the CLI.

Exposed a new option useCrsOrdering on the CityGML Tiler.

Fixed a regression where input models with missing textures were handled incorrectly when KTX output was enabled.

Fixed an issue that could cause a crash when generating tiles with multiple texture types.

Tool added: QuantizedMeshTo3DTilesConverter.

Support for lunar data for imagery tiler, terrain tiler, and QuantizedMeshTo3DTilesConverter.

Buildings tiler now supports using traditional GIS ordering or the ordering from the CRS.

View your Revit models anywhere in the world with accurate geospatial context.

FOX Sports uses Cesium for Unreal and Google Photorealistic 3D Tiles to orient and immerse fans during FOX NFL SUNDAY.

Cesium has partnered with NORAD since 2012 to provide updates on Santa Claus’s real-time location in 3D on Christmas Eve.

On any given Sunday, Cesium for Unreal and Google Photorealistic 3D Tiles are used to orient and immerse FOX Sports' football fans.

Atlanta to Hollywood on FOX NFL SUNDAY. Courtesy FOX Sports.

FOX NFL SUNDAY Atlanta to Hollywood

For FOX NFL SUNDAY, the XR team builds virtual 3D cities to highlight team locations and then fly to the studio in Los Angeles, where the crew of analysts and Hall-of-Famers comments on the matchups of the day. These immersive 3D models are a new feature this season, enabling FOX Sports to visualize specific skylines and customize them with lighting and atmosphere each week for the best production quality and value. Designed for city scale, Google Photorealistic 3D Tiles show viewers the details they would encounter in the real world and reduce FOX’s need to acquire data in other ways.

FOX Sports' XR team uses Cesium for Unreal and Google Photorealistic 3D Tiles to build virtual 3D cities to highlight game locations, like the Steelers-Falcons matchup in Atlanta, Georgia, USA. Courtesy FOX Sports.

The NFL's 32 teams have 30 full-time stadiums and cities among them, plus the occasional international trip. Because Google Maps Platform’s Photorealistic 3D Tiles pull from Google's extensive high-resolution imagery, FOX Sports is well covered with game locations, and draping this imagery over 3D mesh and formatting it as 3D Tiles provides accurate geospatial context for fans, optimized for streaming for the on-air graphics team.

FOX Sports' XR specialists combine Photorealistic 3D Tiles; their own 2D imagery; and 3D models of clouds, water, watercraft, and hand-modeled trees in Unreal Engine, fusing these disparate datasets of varying sizes, georeferencing them, and streaming them via Cesium ion and Cesium for Unreal. Fans see a polished, realistic scene that seamlessly transitions to commentators in the studio.

“In the past, we’ve used aerial imagery, but we have not encountered a tool that has allowed us as much flexibility and detail as Cesium. We put a high value on our production quality, bringing out the most in our brand,” said Zac Fields, SVP of Graphic Technology at FOX Sports. “Beyond a cool visual, it’s very informative, showing cities around the world with context.”

After seeing the matchup location, the viewer flies to the studio in Los Angeles. Courtesy FOX Sports.

FOX NFL SUNDAY airs at 12 p.m. ET. Fields plans to extend the Cesium/Google combo to other sports, like international soccer and Major League Baseball. 

Learn to add Photorealistic 3D Tiles to your Unreal Engine project, and bring both art and information to your viewers.

Cesium Orients and Informs FOX Sports Football Fans

In November, we dove into the benefits of Cesium ion’s automated CI/CD pipeline and prepared for this year’s I/ITSEC in Orlando.

CesiumJS 1.124 is now available. Highlights of the release include:

Added an integration with the iTwin Platform to load iModels as 3D Tiles. Use ITwinPlatform.defaultAccessToken to set the access token. Use ITwinData.createTilesetFromIModelId(iModelId) to load the iModel as a Cesium3DTileset. #12289

PostProcessStageCollection.ambientOcclusion has been updated with a new algorithm to provide better results at all scales, with tunable performance cost. #12316

Added Entity.trackingReferenceFrame property to allow tracking entities in various reference frames. #12194, #12314

Added GoogleGeocoderService for standalone usage of Google geocoder. #12299

Fixed various performance issues related to loading many models (#12320), incorrect shared texture memory tracking (#12331), and point cloud filtering. (#12317)

An iModel of a Philadelphia Metrostation on top of an iTwin Reality Mesh shown in CesiumJS.

Cesium for Unreal v2.11.0 is now available. This is the last release of Cesium for Unreal that will support Unreal Engine v5.2. Future versions will require Unreal Engine v5.3+.

Added three new levels to the Cesium for Unreal Samples project.

Added a "From Ellipsoid" option to Cesium3DTileset to generate a tileset by tessellating the surface of the ellipsoid, producing a simple globe tileset without terrain features.

Fixed an overlay artifact bug that could occur when a Cesium3DTileset had three or more raster overlays.

Fixed a crash that could occur when using SampleHeightMostDetailed on a Cesium3DTileset with a raster overlay.

CesiumPolygonRasterOverlay now references CesiumCartographicPolygon instances using TSoftObjectPtr, which allows, for example, a raster overlay in the persistent level to use a polygon in a sub-level.

Snowdon Sample Model from Autodesk Revit, streamed with 3D Tiles and visualized using Cesium for Unreal. Featured in Level 14_CesiumArchitecturalDesign in Cesium for Unreal Samples.

Metadata queried from a door component in Snowdon Sample Model. Featured in Level 14_CesiumArchitecturalDesign in Cesium for Unreal Samples.

Metadata styling to highlight HVAC components in Snowdon Sample Model. Featured in Level 15_CesiumArchitecturalMetadataStyling in Cesium for Unreal Samples.

The same tileset with isolated floor views. Featured in Level 16_CesiumArchitecturalIsolateCategory in Cesium for Unreal Samples.

Cesium for Unity v1.14.0 is now available. Highlights of this release include:

Fixed a bug in CesiumWebMapTileServiceRasterOverlay that caused automatic Tile Matrix Set Labels to be created incorrectly, leading to incorrect tile request URLs.

Coming soon: full release of the Design Tiler and Cesium ion for Autodesk Revit Add-In.

Fixed a crash that would sometimes occur when subdividing model data to produce leaf tiles.

Fixed incorrect unlit and double-sided materials settings for generated tilesets with a single tile.

Fixed an issue where percent-encoded URIs were incorrectly decoded.

Fixed a rare issue where some tiles would have abnormally large textures.

Added experimental support for Reality Capture and iTwin Capture sidecar files.

Added support for embedding environment variables in paths within the config file (e.g., ${ENV_VAR}/path/to/model.obj).

Improved texture generation for some tiles.

CalTa Inc. has developed TRANCITY, a platform for managing large-scale infrastructure projects such as railways, roads, rivers, ports, and power plants in a three-dimensional space, with Cesium’s platform playing a crucial role in its operation.

COMSPOC has released Spacebook to make space data free to access and visualize with the help of CesiumJS.

In October, we discussed our collaborations with Esri, highlighted AERO AI’s work on reintegrating WebODM with Cesium ion, shared progress on the Cesium Revit Add-In, introduced Japan Regional Terrain and updates to Japan 3D Buildings, dove into how to become a Cesium Certified Developer in Japanese, and explained key updates to glTF rendering in CesiumJS.

CesiumJS 1.123 is now available. Highlights of the release include:

Updated default 3D Tiles and Model lighting when using PBR in order to create a more realistic appearance. #12129

Added ScreenSpaceCameraController.maximumTiltAngle to limit how much the camera can tilt. #12169 by new contributor albek446

Updated Japan Buildings sandcastle to use Japan Regional Terrain. #12259

Moved Viewer functionality to CesiumWidget to increase usability. Makes the CesiumWidget closer to a drop in replacement for the Viewer when not utilizing the extra Viewer widgets. #11967.

Fixed flickering issue caused by bounding sphere retrieval being blocked by the bounding sphere of another entity. #12230

Updates to default 3D Tiles and Model lighting when using PBR create a more realistic appearance.

Cesium for Unreal v2.10.0 is now available. Highlights of the release include:

Added a shared assets system that ensures external images referenced by different glTFs will only be loaded once per image. Previously, these images would be loaded again for each glTF that referenced them. This significantly reduces memory usage for tilesets that reuse the same textures.

Added CircumscribedGroundHeight property to CesiumSunSky. It defaults to 0, which is consistent with the previous behavior. It can be set to a larger value (like 40) to avoid dark splotchy artifacts when zoomed out far from the globe in certain tilesets where geometry extends very far beyond the ellipsoid in the low-detail representation, such as Google Photorealistic 3D Tiles.

Fixed a bug that caused incorrect lighting for tilesets using KHR_materials_unlit.

Reduced the memory used by tiles with KHR_materials_unlit.

CesiumGlobeAnchor properties are no longer shown on the main CesiumSunSky Details panel, because it is almost never necessary to set these. They can still be set on the component's own Details panel if needed.

Fixed error messages in the Unreal log about uninitialized fields in FCesiumSampleHeightResult.

Google Photorealistic 3D Tiles captured from an outer space view, after improvements to its generated normals and surrounding atmosphere.

Cesium for Unity v1.13.1 is now available. Highlights of this release include:

Added restrictions to CesiumRuntime.asmdef to prevent the plugin from attempting to load on platforms not supported by Cesium Native.

Cesium for Omniverse v0.24.0 is now available. Highlights of this release include:

Fixed bug where smooth normals setting would crash.

Peruse the changelog for the full list of updates, and get started with our Cesium for Omniverse tutorials.

Download the Cesium for Omniverse extension

Download the Cesium for Omniverse samples

Japan Regional Terrain is now available in the Cesium ion Asset Depot. Details are in this blog post.

Japan 3D Buildings includes updated building heights and additional bridge features.

Available soon: adding annotations to Cesium Stories. Look for an announcement on the community forum and let us know what you think!

An improved Asset Server is now available. 

The Asset Server allows users to serve Cesium data like Cesium World Terrain, their own data, and other data in environments where Cesium ion Self-Hosted is not deployed. It’s included in subscriptions for Cesium ion Self-Hosted and data like Cesium World Terrain. If you license Cesium content and received an Asset Server from Cesium before September 2024, we recommend upgrading to this newer server. The Asset Server is available on the Downloads page now for current Cesium ion Self-Hosted users; it will soon be downloadable by users with a subscription to Cesium data. If you’d like to access it sooner, please contact your account team.

File watchers that update the content and cache as source files change

“Reentry” blends a game with a simulator, so users learn to operate spacecraft with realistic procedures and, soon, Cesium Moon Terrain. Within a few hours of hearing about Cesium Moon Terrain, creator Petri Wilhelmsen began incorporating it into Reentry via Cesium ion and Cesium for Unity. Wilhelmsen reports it took only 30 minutes to replace his lower fidelity Moon with Cesium Moon Terrain.

The Lunar Module preparing for descent and landing on the lunar surface. Courtesy Petri Wilhelmsen.

In September, we introduced the AECO Tech Preview Program, highlighted our summer Refactor, shared that we’ve joined Bentley Systems, featured enhancements to the Three.js 3D Tiles renderer, and announced grant support for the Cesium plugin for Godot.

Visualization of structural metadata and mesh features from 3D Tiles 1.1 is now possible in Three.js with the San Francisco Ferry Building.

CesiumJS 1.122 is now available. Highlights of the release include:

Added CallbackPositionProperty to allow lazy entity position evaluation. #12170 by new contributor jfayot

Added enableVerticalExaggeration option to models. Set this value to false to prevent model exaggeration when Scene.verticalExaggeration is set to a value other than 1.0. #12141 by new contributor timeichfeld-msa

Fix Texture errors when using a HTMLVideoElement. #12219

Fixed noise in ambient occlusion post process. #12201

The new CallbackPositionProperty allows Entities to lazily evaluate a position. Here, it’s used to track a drone flying through the Grand Canyon, as visualized using Google Photorealistic 3D Tiles.

Cesium for Unreal v2.9.0 is now available. Highlights of the release include:

Cesium Releases in March 2025

Cesium Releases in February 2025

Building Culture and Community with Code Reviews

Cesium Releases in January 2025

Cesium Orients and Informs FOX Sports Football Fans

Cesium Releases in December 2024

Cesium Releases in November 2024