import { Project } from '../../project/project';
import { Exporter, ExportOptions } from '../exporter';
export interface GLTFExportOptions extends ExportOptions {
    scale?: number;
    binary?: boolean;
    embed_textures?: boolean;
    export_animations?: boolean;
}
/**
 * GLTF exporter
 * Exports project geometry to GLTF format (JSON or binary GLB)
 *
 * Returns:
 * - JSON object when binary=false (glTF JSON format)
 * - ArrayBuffer when binary=true (GLB binary format)
 *
 * Note: This is a simplified GLTF exporter. For full GLTF support with
 * animations, materials, and textures, consider using Three.js GLTFExporter
 * or a more complete GLTF library.
 */
export declare class GLTFExporter implements Exporter {
    export(project: Project, options?: GLTFExportOptions): any | ArrayBuffer;
    private getGeometryData;
    private getCubeGeometry;
    private getMeshGeometry;
    private createBuffer;
    private getMin;
    private getMax;
    private eulerToQuaternion;
    private arrayBufferToBase64;
    /**
     * Build animation tracks from project animations
     */
    private buildAnimationTracks;
    /**
     * Create GLB (binary GLTF) format
     * GLB structure:
     * - 12-byte header (magic, version, total length)
     * - JSON chunk (length, type, JSON data)
     * - Binary chunk (length, type, binary data)
     */
    private createGLB;
    /**
     * Convert string to ArrayBuffer
     */
    private stringToArrayBuffer;
    /**
     * Pad ArrayBuffer to specified boundary (typically 4 bytes)
     */
    private padToBoundary;
}
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