import type * as THREE from 'three';
export interface AnimationState {
    clipIndex: number;
    playing: boolean;
    speed: number;
}
export declare const MIN_SPEED = 0.1;
export declare const MAX_SPEED = 3;
export declare const DEFAULT_ANIMATION_STATE: AnimationState;
/** A model with no clips is never "animated", so the card offers no animation action for it. */
export declare function initialState(clipCount: number): AnimationState | null;
export declare function withClip(state: AnimationState, clipIndex: number, clipCount: number): AnimationState;
export declare function withPlaying(state: AnimationState, playing: boolean): AnimationState;
export declare function withSpeed(state: AnimationState, speed: number): AnimationState;
/** The renderer draws on demand, so a paused or stopped mixer must not keep asking for frames. */
export declare function needsFrames(states: (AnimationState | null)[]): boolean;
/** Runs the state's clip alone, at its speed, paused or not. One place, so every viewer plays alike. */
export declare function applyAnimationTo(mixer: THREE.AnimationMixer, clips: THREE.AnimationClip[], state: AnimationState): void;
//# sourceMappingURL=modelAnimation.d.ts.map