Function simplifyGaussians

simplifyGaussians(
    dataTable: DataTable,
    targetCount: number,
    createDevice?: DeviceCreator,
): Promise<DataTable>
Simplifies a Gaussian splat DataTable to a target number of splats by progressive pair-wise merging of nearest-neighbor gaussians.

The merge math is derived from sparkjsdev/spark gsplat.rs::new_merged (area·α weighted, mass-conserving opacity, no filter floor, opacity clamped at 1). It preserves color fidelity through multiple iterations far better than the NanoGS Porter-Duff opacity + volume-weighted formula does — color drift / over-saturation is essentially gone even at aggressive reductions.
Parameters
- dataTable: DataTable
  The input splat DataTable.
- targetCount: number
  The desired number of output splats.
- OptionalcreateDevice: DeviceCreator
  Optional factory yielding a GraphicsDevice. When supplied, KNN and edge-cost run on the GPU; otherwise the CPU KD-tree path is used.
Returns Promise<DataTable>
A new DataTable with approximately targetCount splats.
- Defined in data-table/decimate.ts:643