import { QueueEntry } from './layer';
import { StreamState } from './stream';
/**
 * Defines the structure for storing the state of an animation.
 * Contains information about the state of layers and layer clips within the animation.
 */
export interface AnimationState {
    /**
     *  Stores the state of each layer by its ID.
     */
    byLayer: {
        [id: string]: LayerState;
    };
    /**
     *  Stores the state of each layer clip by its ID.
     */
    byLayerClip: {
        [id: string]: LayerClipState;
    };
    /**
     * ptional ID of the spotlight layer, if any.
     */
    spotlightLayer?: string;
}
/**
 * Represents the state of an individual layer within an animation.
 */
export interface LayerState {
    /**
     *  Queue state entries for the layer.
     */
    queue: LayerQueueEntryState[];
    /**
     *  Index of the currently active queue entry, if any.
     */
    active?: number | null;
}
/**
 * Defines the state of a queue entry within a layer.
 * Excludes the 'layerClip' object itself, instead referencing it by ID.
 */
export type LayerQueueEntryState = Omit<QueueEntry, 'layerClip'> & {
    layerClip: string | null | undefined;
};
/**
 * Describes the state of a LayerClip within an animation.
 */
export interface LayerClipState {
    /**
     *  Start time of the clip.
     */
    t0: number;
    /**
     * End time of the clip, or null to indicate an indefinite duration.
     */
    t1: number | null;
    /**
     *  The time at which the clip was paused, if applicable.
     */
    pauseTime?: number;
    /**
     * Playback rate of the clip.
     */
    rate: number;
    /**
     * Indicates whether the clip is set to loop.
     */
    loop: boolean;
    /**
     * Indicates whether the clip is stopped.
     */
    stopped: boolean;
    /**
     *  The current stream state of the clip.
     */
    state: StreamState;
}