v0.2.1: Scene transform bug fix

Small release containing a fix for a bug that caused scene transforms to be incorrectly applied.

v0.2.0: Real-time transformations

This update adds the ability to apply real-time transformations to splat scenes. Prior to this release, splat scenes could have a custom transformation applied when the scene was added to the viewer, after which the scene had to remain static.

Code changes

• Added dynamicScene parameter to Viewer and dynamicMode parameter to SplatMesh as a hint so that they won't make any optimizations that assume a static scene.

• Updated splat data access methods in SplatMesh so that by default they only apply scene transformations if dynamicMode is false.

• Added new API for accessing individual splat scenes. Each of the following methods returns a SplatScene object by which the position, orientation, and scale of an individual splat scene can be modified in real time.

  • SplatMesh.getScene(sceneIndex)
  • Viewer.getSplatScene(sceneIndex)
  • DropInViewer.getSplatScene(sceneIndex)

• Added demo page with dynamic scenes example: demo/dynamic_scenes.html

Breaking Changes

• Updated splat scene loading functions to have more consistent names that better describe their purpose:
  - Viewer.loadFile() changed to Viewer.addScene()
  - Viewer.loadFiles() changed to Viewer.addScenes()
  - DropInViewer.addSceneFromFile() changed to DropInViewer.addScene()
  - DropInViewer.addScenesFromFiles() changed to DropInViewer.addScenes()

• Changed Viewer.scene parameter to Viewer.threeScene to avoid confusion with the concept of splat scenes

v0.1.11: Publish NPM package

Small set of updates to prepare for publication as an NPM package: @mkkellogg/gaussian-splats-3d

v0.1.10: Optional integer-based splat sort

This release makes the integer-based splat sort optional, and provides a Viewer parameter to control it: integerBasedSort, which defaults to true. If set to false, the floating-point version will be used. The integer-based version is faster, but does not handle larger scenes well.

v0.1.9: Optional shared memory usage and cancellable scene load

• Allow shared memory usage to be disabled by passing false for sharedMemoryForWorkers to the constructor for Viewer. This forces data to be copied to and from the sorting web worker, but gets around the need to set special CORS headers to enable SharedArrayBuffer.
• Allow splat scene downloads to be cancelled via a special promise, AbortablePromise, that is returned by all scene loading functions (Viewer.loadFile(), etc.) and has an abort() method.

v0.1.8: General refactoring, cleanup and documentation

• Breaking change: RenderableViewer changed to DropInViewer
• General cleanup and refactoring of code to improve organization and readability
• Added comments to many functions and classes (documentation work is still ongoing).

v0.1.7: Transform-aware splat data access via SplatMesh

The SplatMesh class now has splat data accessors that will automatically apply the transform the developer has specified for the corresponding splat file:

• getSplatCenter()
• getSplatScaleAndRotation()
• fillSplatDataArrays()

Instead of returning the original value of these splat attributes as stored on disk, they will apply the transform that was specified when the splat scene was loaded (via Viewer.loadFile() or similar). The original value can still be accessed via the corresponding functions in SplatBuffer.

v0.1.6: Expose compression parameters

• Expose compression parameters blockSize and bucketSize so that they can be customized for a given scene
• General internal cleanup

v0.1.5: Support .splat to .ksplat conversion

• Support converting .splat files to .ksplat format
• Cleanup of compression code

v0.1.4: Support importing standard .splat files

• Breaking change: Rename extension for custom compressed splat scene file format from .splat to .ksplat
• Interpret files with .splat extension as the commonly used format created by antimatter15