import { Camera } from 'three';
import { SparkRenderer } from '@sparkjsdev/spark';
interface UseCameraPreviewOptions {
    /**
     * The camera key (must match the key used in registerCamera)
     */
    cameraKey: string;
    /**
     * The Three.js camera instance
     */
    camera: Camera;
    /**
     * The SparkRenderer instance (from useSparkRenderer hook)
     */
    sparkRenderer: SparkRenderer;
    /**
     * Width of the render target in pixels
     */
    width: number;
    /**
     * Height of the render target in pixels
     */
    height: number;
    /**
     * Enable or disable preview rendering.
     * When false, the viewpoint is disposed and no rendering occurs.
     * @default true
     */
    enabled?: boolean;
}
/**
 * Hook to render camera preview using SparkViewpoint (supports 3DGS).
 *
 * Creates a SparkViewpoint for this camera that maintains its own sort order
 * and renders to its own internal target. The texture is accessed via
 * getPreviewTexture() which reads directly from viewpoint.target.texture.
 *
 * For legacy rendering without 3DGS support, use useLegacyCameraPreview instead.
 *
 * @example
 * useCameraPreview({
 *   cameraKey: 'cam1',
 *   camera,
 *   sparkRenderer,
 *   width: 1024,
 *   height: 768,
 *   enabled: previewInScene || previewInOverlay,
 * });
 */
export declare function useCameraPreview({ cameraKey, camera, sparkRenderer, width, height, enabled, }: UseCameraPreviewOptions): void;
export {};