import * as THREE from 'three/webgpu';
export interface SplatRenderViewContext {
    readonly renderTarget: THREE.RenderTarget<THREE.Texture> | null;
    readonly width: number;
    readonly height: number;
    readonly viewport: THREE.Vector4;
    readonly scissor: THREE.Vector4;
    readonly camera: THREE.Camera;
    readonly coordinateSystem: THREE.CoordinateSystem;
    readonly pixelRatio: number;
    readonly isFullViewport: boolean;
}
export interface SplatSceneCoordinatorHandle {
    remove(splats: SplatCoordinatedMesh): void;
}
export interface SplatCoordinatedMesh extends THREE.Object3D {
    autoUpdate: boolean;
    _disposed: boolean;
    readonly _splatSceneCoordinators: Set<SplatSceneCoordinatorHandle>;
    update(renderer: THREE.Renderer, camera: THREE.Camera, viewContext: SplatRenderViewContext): void;
}
/**
 * Build the active physical render-view context used by Gaussian splat projection.
 *
 * @param {THREE.Renderer} renderer Active renderer.
 * @param {THREE.Camera} camera Active camera.
 * @param {THREE.RenderTarget|null} [renderTarget] Active render target.
 * @returns {Object} Render-view context.
 */
export declare function createSplatRenderViewContext(renderer: THREE.Renderer, camera: THREE.Camera, renderTarget?: THREE.RenderTarget<THREE.Texture> | null): SplatRenderViewContext;
/**
 * Find the Scene containing an Object3D.
 *
 * @param {THREE.Object3D} object Object to inspect.
 * @returns {THREE.Scene|null} Containing scene, if attached.
 */
export declare function findSplatScene(object: THREE.Object3D): THREE.Scene | null;
/**
 * Register splats for automatic updates before a scene render pass starts.
 *
 * @param {GaussianSplats} splats Gaussian splat mesh.
 * @param {THREE.Scene} scene Containing scene.
 */
export declare function registerSplatMesh(splats: SplatCoordinatedMesh, scene: THREE.Scene): void;
/**
 * Remove splats from all automatic scene update coordinators.
 *
 * @param {GaussianSplats} splats Gaussian splat mesh.
 */
export declare function unregisterSplatMesh(splats: SplatCoordinatedMesh): void;