Loading Collada files with a progress callback function can help track the

Is there a proper way to incorporate a loading bar while using the ColladaLoader?

The code indicates that the loader requires three parameters, with one being a progressCallback.

progressCallback( { total: length, loaded: request.responseText.length } );

When I call a function for the progressCallback to showcase the values, the total appears as null and the loaded reaches 5,200,000.

function(callback){    
    console.log(callback.loaded + ' / ' + callback.total);
}

How can I include a percentage of the loaded elements using the ColladaLoader?

javascriptthree.jsloadercollada

Answer №1

Upon inspecting the inner workings of ColladaLoader.js, it appears that the progressCallback function evaluates both the total character count(5,200,000) and the number of characters read in your collada file.

To calculate the percentage, you can utilize the following formula:

var percentage = Math.round(callback.loaded / callback.total) * 100;

The fluctuation in your percentage values is likely due to local execution or cached data. Running this through a server will result in a more gradual update of the percentage.

It has been pointed out by WestLangley that the total value will only be displayed if accessed through a server or local server, showing as null when opened directly from a file. This behavior stems from Ajax making requests to the server for data.

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