import { ColorRepresentation } from 'three';
import { ViewpointState } from '../../render/viewpoint/ViewpointTools.ts';
import { ExtensionBase } from '../ExtensionBase.ts';
export declare class SliceExtensionOptions {
    handleColor: ColorRepresentation;
    planeColor: ColorRepresentation;
}
export declare class SliceExtension extends ExtensionBase implements ViewpointState {
    static getName: () => string;
    private sharedToolbar;
    isSliceOn: boolean;
    private plane;
    private planeMap;
    private normal;
    private offset;
    private perpendicularOffset;
    private handleGroup;
    private planeGroup;
    private handleMesh;
    private planeLines;
    private startOffset;
    private startHandlePosition;
    private readonly handleColor;
    private readonly planeColor;
    isPicking: boolean;
    constructor(viewerName: string, options?: SliceExtensionOptions);
    private initKeymap;
    commandChanged(): void;
    added(): void;
    deleted(): void;
    storeViewpointState(): any;
    restoreViewpointState(state: any): void;
    private initVisuals;
    private updateVisuals;
    private onDragStart;
    private onDrag;
    private onDragEnd;
    private applyClipping;
    toggleSlice(): void;
    setSlice(on: boolean, skipPicking?: boolean): void;
    flipPlane(): void;
    startPickFace(): void;
    sharedToolbarRender(container: HTMLElement): void;
}
export default SliceExtension;