Function parseSTL

src/webgl/loading.js:668–687

* @private * STL files can be of two types, ASCII and Binary, * * We need to convert the arrayBuffer to an array of strings, * to parse it as an ASCII file.

(model, buffer)

   * to parse it as an ASCII file.
   */
  function parseSTL(model, buffer) {
    if (isBinary(buffer)) {
      parseBinarySTL(model, buffer);
    } else {
      const reader = new DataView(buffer);

      if (!('TextDecoder' in window)) {
        console.warn(
          'Sorry, ASCII STL loading only works in browsers that support TextDecoder (https://caniuse.com/#feat=textencoder)'
        );
        return model;
      }

      const decoder = new TextDecoder('utf-8');
      const lines = decoder.decode(reader);
      const lineArray = lines.split('\n');
      parseASCIISTL(model, lineArray);
    }
    return model;
  }

  /**
   * @private