import * as spec from '@galacean/effects-specification';
import type { GraphContext, InstantiationContext } from '../graph-context';
import type { PoseResult } from '../pose-result';
import { GraphNodeData, PoseNode } from '../graph-node';
export declare enum TransitionState {
    None = 0,
    TransitioningIn = 1,
    TransitioningOut = 2
}
export declare class StateNodeData extends GraphNodeData {
    stateName: string;
    childNodeIndex: number;
    instantiate(context: InstantiationContext): void;
    load(data: spec.StateNodeData): void;
}
export declare class StateNode extends PoseNode {
    childNode: PoseNode | null;
    private transitionState;
    private elapsedTimeInState;
    private isFirstStateUpdate;
    isTransitioning(): boolean;
    isTransitioningIn(): boolean;
    isTransitioningOut(): boolean;
    startTransitionIn(context: GraphContext): void;
    startTransitionOut(context: GraphContext): void;
    setTransitioningState(newState: TransitionState): void;
    getElapsedTimeInState(): number;
    evaluate(context: GraphContext, result: PoseResult): PoseResult;
    protected initializeInternal(context: GraphContext): void;
    protected shutdownInternal(context: GraphContext): void;
}