import type { Vector3 } from '@holoscript/core';
/**
 * VolumetricLight.ts
 *
 * Volumetric/god ray lighting: scattering computation,
 * shadow-aware shafts, intensity falloff, and ray marching.
 *
 * @module rendering
 */
export interface VolumetricLightConfig {
    id: string;
    position: [number, number, number];
    direction: Vector3;
    color: [number, number, number];
    intensity: number;
    scattering: number;
    decay: number;
    samples: number;
    maxDistance: number;
    shadowDensity: number;
    enabled: boolean;
}
export interface VolumetricSample {
    position: [number, number, number];
    accumulated: number;
    step: number;
}
export declare class VolumetricLight {
    private lights;
    addLight(config: Partial<VolumetricLightConfig> & {
        id: string;
    }): VolumetricLightConfig;
    removeLight(id: string): void;
    getLight(id: string): VolumetricLightConfig | undefined;
    getLightCount(): number;
    march(lightId: string, viewPos: Vector3, viewDir: Vector3): VolumetricSample[];
    getScatteringAt(lightId: string, worldPos: Vector3): number;
    private normalize;
}
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