Function loadSTLFile

js/stlLoader.js:16–37

(file)

const objLoader = new OBJLoader();

/**
 * Load an STL from a File object.
 * Returns { geometry, bounds } where bounds = { min, max, center, size } (THREE.Vector3).
 * The geometry is translated so its bounding-box centre is at the world origin.
 */
export function loadSTLFile(file) {
  if (file.size > MAX_FILE_SIZE) {
    return Promise.reject(new Error(
      'File too large (' + Math.round(file.size / 1024 / 1024) + ' MB). Maximum supported: ' + (MAX_FILE_SIZE / 1024 / 1024) + ' MB.'
    ));
  }
  return new Promise((resolve, reject) => {
    const reader = new FileReader();
    reader.onload = (e) => {
      try {
        const geometry = stlLoader.parse(e.target.result);
        const { nanCount, degenerateCount, originOffset } = setupGeometry(geometry);
        const bounds = computeBounds(geometry);
        resolve({ geometry, bounds, nanCount, degenerateCount, originOffset });
      } catch (err) {
        reject(err);
      }
    };
    reader.onerror = () => reject(new Error('Could not read file'));
    reader.readAsArrayBuffer(file);