1.120

CesiumGS/cesium1.120Aug 1, 2024by jjhembd

AI Summary

CesiumJS 1.120 introduces new coordinate transformations for the Moon, supports scene splitting, and improves image-based lighting calculations.

Key Highlights

Added computeIcrfToMoonFixedMatrix for Moon coordinate transformations.
Added computeIcrfToCentralBodyFixedMatrix for lighting calculations.
Added SplitDirection property for display primitives relative to Scene.splitPosition.
Fixed environment map LOD selection and specular BRDF.

New Features

Moon fixed frame and ICRF transformations.
Central body fixed frame transformation.
Scene split direction support for primitives.
Improved image-based lighting calculations.

Full Release Notes

2024-08-01

Highlights include:
- Added `Transforms.computeIcrfToMoonFixedMatrix` and `Transforms.computeMoonFixedToIcrfMatrix` to compute the transformations between the Moon's fixed frame and ICRF at a given time.
- Added `Transforms.computeIcrfToCentralBodyFixedMatrix` to specify the default ICRF to fixed frame transformation to use internally, including for lighting calculations.
- Added SplitDirection property for display PointPrimitive and Billboard relative to the `Scene.splitPosition`. [#11982](https://github.com/CesiumGS/cesium/pull/11982)
- Fixed environment map LOD selection in image-based lighting. [#12070](https://github.com/CesiumGS/cesium/pull/12070)
- Corrected calculation of diffuse component in image-based lighting. [#12082](https://github.com/CesiumGS/cesium/pull/12082)
- Updated specular BRDF for image-based lighting. [#12083](https://github.com/CesiumGS/cesium/pull/12083)

See the [changelog](https://github.com/CesiumGS/cesium/blob/1.120/CHANGES.md) for the complete list of changes.