/**
 * Timeline.ts
 *
 * Sequential and parallel animation group orchestration.
 * Enables complex choreographed animation sequences.
 */
import { AnimationEngine, AnimationClip } from './AnimationEngine';
export type TimelineMode = 'sequential' | 'parallel';
export interface TimelineEntry {
    clip: AnimationClip;
    setter: (value: number) => void;
    startOffset?: number;
}
export interface TimelineConfig {
    mode: TimelineMode;
    loop: boolean;
    loopCount: number;
    pingPong: boolean;
    delay: number;
    onComplete?: () => void;
    onLoop?: (count: number) => void;
}
export declare class Timeline {
    private entries;
    private config;
    private engine;
    private elapsed;
    private isPlaying;
    private isPaused;
    private currentLoop;
    private direction;
    private totalDuration;
    constructor(config?: Partial<TimelineConfig>, engine?: AnimationEngine);
    /**
     * Add an animation to the timeline.
     */
    add(clip: AnimationClip, setter: (value: number) => void, startOffset?: number): Timeline;
    /**
     * Start playing the timeline.
     */
    play(): void;
    pause(): void;
    resume(): void;
    stop(): void;
    /**
     * Update the timeline. Call every frame.
     */
    update(delta: number): void;
    private updateSequential;
    private updateParallel;
    private handleCompletion;
    private recalcDuration;
    /**
     * Get total duration of the timeline.
     */
    getDuration(): number;
    /**
     * Get current elapsed time.
     */
    getElapsed(): number;
    /**
     * Get normalized progress (0-1).
     */
    getProgress(): number;
}
//# sourceMappingURL=Timeline.d.ts.map