import * as THREE from 'three';
import { OrbitControls } from 'three/addons/controls/OrbitControls.js';
import type { RenderedPart } from './protocol.js';
export interface ViewerOptions {
    canvas: HTMLCanvasElement;
    backgroundColor?: number;
    /** Square build-plate outline/grid size in mm; omit for no bed. */
    bedSize?: number;
}
export declare class Viewer {
    canvas: HTMLCanvasElement;
    renderer: THREE.WebGLRenderer;
    scene: THREE.Scene;
    camera: THREE.PerspectiveCamera;
    controls: OrbitControls;
    private currentGroup;
    private lastW;
    private lastH;
    constructor(opts: ViewerOptions);
    private resize;
    private animate;
    presentObject(object3d: THREE.Object3D): void;
    loadParts(parts: RenderedPart[]): number;
}