Autodesk Forge: Measurement and Slice not working - Not an instance of THREE.Object3D

问题

I have created a Forge Viewer using version 7 of the viewer3d.js and can view a model within it.

My issue is that the measurement and slice tools aren't working as expected. FYI I'm using typescript - angular 8.

I'm expecting the graphics to look like this for a slice:

Instead the plane and gyroscope symbol never appear:

Similarly with the measurement tool, the mouse cursor changes to the measurement cursor, but when i click on a surface, nothing happens.

Here is my code for loading the viewer:

  loadViewer(forgeTokenData, modelUrn) {


    options = {
      env: 'AutodeskProduction',
      api: 'derivativeV2',
      getAccessToken: (onSuccess) => {
        onSuccess((forgeTokenData as any).access_token, (forgeTokenData as any).expires_in);
    }};

    Autodesk.Viewing.Initializer(options, () => {

      // Find the element where the 3d viewer will live.
      const htmlElement = document.getElementById('viewerContainer');

      if (htmlElement) {
        // Create and start the viewer in that element
        const viewer = new Autodesk.Viewing.GuiViewer3D(htmlElement);
        viewer.start();

        const documentId = 'urn:' + this.removeBase64Padding(modelUrn);

        console.log(documentId);

        this.loadDocument(documentId, viewer);
      }});
  }

I've also loaded the styles and scripts in my index.html head:

<head>
  <meta charset="utf-8">
  <title>testing</title>
  <base href="/">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link rel="icon" type="image/x-icon" href="favicon.ico">
  <link rel="stylesheet" href="https://developer.api.autodesk.com/modelderivative/v2/viewers/7.*/style.min.css" type="text/css">
  <script src="https://developer.api.autodesk.com/modelderivative/v2/viewers/7.*/viewer3D.min.js" ></script>
</head>

Not sure why this is happening. Are there any other styles or scripts i'm missing?

I've noticed these errors in the console when i click on the slice / measurement tool:

来源：https://stackoverflow.com/questions/59271906/autodesk-forge-measurement-and-slice-not-working-not-an-instance-of-three-obj

标签

typescript

autodesk-forge

autodesk-viewer