Pointcloud not loading

CesiumJS
1

I have a pointcloud on Cesium Ion which renders in the Sandcastle but does not render in my app. The browser returns a 404 error related: Failed to load resource: the server responded with a status of 404 (Not Found). This is accompanied by the following message in the browser window: Cannot GET /ThirdParty/draco_decoder.wasm. The issue appears to be related to a number of posts concerning the loading of the configuration of Webpack concerning the module for Draco compression:

While some users appear to have been able to resolve the issue I haven’t been able to determine the following:

  • Does Cesium contain the relevant package or do I need to load an external package? If so which package?
  • Is there a specific function I need to call to ensure the pointcloud is loaded using Draco?
  • As I am building my app with Webpack are there any specific changes I’d need to consider making to the webpack.config.js file.

Any pointers in the right direction would be much appreciated.

2

Hi there,

draco_decoder.wasm is shipped with CesiumJS. It is used to decode draco-encoded data. Your point cloud is likely draco encoding for a smaller file size.

There’s no function you should need to call on it. CesiumJS should handle the loading directly assuming it has access to draco_decoder.wasm in order to decode.

Ensure you are copying the ThirdParty directory contents in your webpack config to make sure it’s included in your app.