import { Component } from '@certe/atmos-core';
/**
 * Directional light component.
 * Direction is derived from the Transform's forward vector (negative Z axis in world space).
 */
export declare class DirectionalLight extends Component {
    color: Float32Array<ArrayBuffer>;
    intensity: number;
    castShadows: boolean;
    shadowIntensity: number;
    shadowResolution: number;
    /** Near cascade: ortho half-extent in world units. */
    shadowSize: number;
    /** Near cascade: how far behind/ahead the light camera reaches. */
    shadowDistance: number;
    /** Far cascade: ortho half-extent in world units. */
    shadowFarSize: number;
    /** Far cascade: how far behind/ahead the light camera reaches. */
    shadowFarDistance: number;
    /** Extract world direction (negated Z column of worldMatrix, normalized) into `out`. */
    getWorldDirection(out: Float32Array): Float32Array;
}
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