Events to track bulk polygon loading / triangulation complete

CesiumJS
2

This is certainly something that can be improved in CesiumJS. An obtuse, but correct way to check for this would be the value of viewer.clockViewModel.canAnimate. If it’s true, then all geometry is loaded. If it’s false, then it can’t. You can wrap this in a postRender resolve callback

await new Promise((resolve) => {
  const removeEvent = viewer.scene.postRender.addEventListener(() => {
    if (viewer.clockViewModel.canAnimate) {
      removeEvent();
      resolve();
    }
  });
});

I added it to one of the geometry Sandcastles to show an example

I also will add a link back to this post and a note to the GitHub issue that exists for addressing this: Scene ready event · Issue #4422 · CesiumGS/cesium · GitHub

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