Autodesk forge查看器加载自定义特性

<script src="https://developer.api.autodesk.com/modelderivative/v2/viewers/7.*/viewer3D.min.js"></script>

let viewer;

function initializeViewer() {
  const options = {
    env: 'AutodeskProduction',
    getAccessToken: function(onTokenReady) {
      const token = 'YOUR_ACCESS_TOKEN';
      const timeInSeconds = 3600; // Use value provided by Forge Authentication API
      onTokenReady(token, timeInSeconds);
    }
  };

  Autodesk.Viewing.Initializer(options, () => {
    viewer = new Autodesk.Viewing.GuiViewer3D(document.getElementById('forgeViewer'), { extensions: ['Autodesk.DocumentBrowser'] });
    viewer.start();

    const documentId = 'urn:YOUR_URN';
    Autodesk.Viewing.Document.load(documentId, onDocumentLoadSuccess, onDocumentLoadFailure);
  });

  function onDocumentLoadSuccess(doc) {
    const viewables = doc.getRoot().getDefaultGeometry();
    viewer.loadDocumentNode(doc, viewables);
  }

  function onDocumentLoadFailure(viewerErrorCode) {
    console.error('onDocumentLoadFailure() - errorCode:' + viewerErrorCode);
  }
}

initializeViewer();

class CustomExtension extends Autodesk.Viewing.Extension {
  constructor(viewer, options) {
    super(viewer, options);
    this.viewer = viewer;
  }

  load() {
    console.log('CustomExtension loaded');
    // 在这里添加您的自定义代码
    return true;
  }

  unload() {
    console.log('CustomOverride unloaded');
    // 在这里添加您的自定义代码
    return true;
  }
}

Autodesk.Viewing.theExtensionManager.registerExtension('CustomExtension', CustomExtension);

// 在initializeViewer函数中添加以下代码来加载自定义扩展
viewer.loadExtension('CustomExtension');