import { AnimationClip3D } from './AnimationClip3D';
export declare class AnimationUtils3D {
    static makeClipAdditive(targetClip: AnimationClip3D, referenceFrame?: number, referenceClip?: AnimationClip3D, fps?: number): AnimationClip3D;
    static subclip(sourceClip: AnimationClip3D, name: string, startFrame: number, endFrame: number, fps?: number): AnimationClip3D;
}
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