import * as THREE from 'three';
export interface ClipSdf {
    position: THREE.Vector3;
    quaternion: THREE.Quaternion;
    updateMatrixWorld: (force?: boolean) => void;
    removeFromParent: () => void;
}
export interface ClipEdit {
    sdfs: ClipSdf[] | null;
    add: (sdf: ClipSdf) => void;
}
/** Spark's PLANE sdf is an Object3D facing local +Z; a THREE.Plane is a normal and an offset. */
export declare function sdfTransformForPlane(plane: THREE.Plane): {
    position: any;
    quaternion: any;
};
/**
 * Points one cutting sdf at each clipping plane. Spark unions the sdfs of an edit, so a splat
 * is dropped when it is behind any plane — the same half-space three keeps for everything else.
 */
export declare function syncClipSdfs(edit: ClipEdit, planes: readonly THREE.Plane[], createSdf: () => ClipSdf): void;
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