import type { Fog, Light } from './lights';
export declare class LightPool {
    /**
     * lights
     */
    private lights;
    /**
     * support only 1 fog
     */
    private fog;
    addLight(light: Light): void;
    removeLight(light: Light): void;
    addFog(fog: Fog): void;
    removeFog(fog: Fog): void;
    getFog(): Fog;
    getAllLights(): Light[];
    /**
     * USE_LIGHT
     * NUM_AMBIENT_LIGHTS
     * NUM_DIR_LIGHTS
     */
    getDefines(): Record<string, number | boolean>;
    private sortLights;
}
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