/**
 * Implementation of the GLTF 2.0 format exporter.
 *
 * @category Exporter
 */
export class GltfExporter extends CoreExporter {
    static writeBufferView(resources: any, json: any, buffer: any): void;
    static createPrimitive(resources: any, json: any, mesh: any, options?: {}): {
        attributes: {};
    };
    /**
     * @ignore
     */
    collectResources(root: any): {
        buffers: any[];
        cameras: any[];
        entities: any[];
        materials: any[];
        skins: any[];
        textures: any[];
        entityMeshInstances: any[];
        bufferViewMap: Map<any, any>;
        compressableTexture: Set<any>;
    };
    writeBufferViews(resources: any, json: any): void;
    writeCameras(resources: any, json: any): void;
    attachTexture(resources: any, material: any, destination: any, name: any, textureSemantic: any, json: any): void;
    writeStandardMaterial(resources: any, mat: any, output: any, json: any): void;
    writeMaterials(resources: any, json: any): void;
    writeNodes(resources: any, json: any): void;
    writeMeshes(resources: any, json: any, options: any): void;
    writeSkins(resources: any, json: any): void;
    convertTextures(srcTextures: any, options: any): any[];
    writeTextures(resources: any, textureCanvases: any, json: any, options: any): Promise<any[]>;
    getBlob(canvas: any, mimeType: any): any;
    getPaddedArrayBuffer(arrayBuffer: any, paddingByte?: number): any;
    buildJson(resources: any, options: any): Promise<{
        asset: {
            version: string;
            generator: string;
        };
        scenes: {
            nodes: number[];
        }[];
        images: any[];
        samplers: any[];
        textures: any[];
        scene: number;
    }>;
    /**
     * Converts a hierarchy of entities to GLB format.
     *
     * @param {Entity} entity - The root of the entity hierarchy to convert.
     * @param {object} options - Object for passing optional arguments.
     * @param {number} [options.maxTextureSize] - Maximum texture size. Texture is resized if over the size.
     * @param {boolean} [options.stripUnusedAttributes] - If true, removes unused vertex attributes:
     *
     * - Texture coordinates not referenced by materials
     * - Vertex colors if not used by materials
     * - Tangents if no normal maps are used
     * - Skinning data if no skinned meshes exist
     *
     * Defaults to false.
     * @returns {Promise<ArrayBuffer>} - The GLB file content.
     */
    build(entity: Entity, options?: {
        maxTextureSize?: number;
        stripUnusedAttributes?: boolean;
    }): Promise<ArrayBuffer>;
}
import { CoreExporter } from './core-exporter.js';
import type { Entity } from '../../framework/entity.js';