;

/**
*
* Accepts a fileinput event, presumably from a file upload event listener, and assigns
* functions to each file reader listed in the event to be called upon the full loading
* of that given reader's files
*
* @method readMultipleFiles
* @for renderGlobal
* @param {Event} evt A fileinput event, to be given by a fileinput event listener
* @return {Void}
*
*/
function readMultipleFiles(evt) {
	//Retrieve all the files from the FileList object
	var files = evt.target.files;

	if (files) {
		for (var i=0, f; f=files[i]; i++) {

			var r = new FileReader();
			var extension=grabExtension(f.name)[0];
			//console.log(f.name);

			if(extension===undefined){
				continue;
			}
			if(extension.toLowerCase()==="stl"){
				r.onload = (function(f) {
					return function(e) {
					//console.log(f.name);
						var contents = e.target.result;
						if(r.result!=null){
							STLs.push(r.result);
						}
						loadParts();
					};
				})(f);
				r.readAsArrayBuffer(f);
				fileReaders.push({Reader: r, Name: f.name});
			}
		}
		//`console.log(fileReaders);
	}
	else {
		  alert("Failed to load files");
	}
}


// Inserts the file loading manager into the document
document.getElementById('fileinput').addEventListener('change', readMultipleFiles, false);



/**
*
* Called internally upon every recieved fileload event. Checks if every file reader in the
* array "fileReaders" has fully read each of their files. If so, then the function converts
* all recieved stl files into threeJS models and executes "renderParts".
*
* @method loadParts
* @for renderGlobal
* @return {Void}
*
*/
function loadParts (){


		// Looks for unloaded files
		var pos=0;
		var lim=fileReaders.length;
		while(pos<lim){
			if(!(fileReaders[pos].Reader.readyState===2)){
				//console.log(pos);
				//console.log(fileReaders[pos].Name);
				break;
			}
			pos++;
		}


	// Executes if all files are loaded
	if(pos===lim){
		console.log("ALL DONE");
		parts.length=0;
		pos=0;
		var partGeom=null;
		var partMesh;
		var theCenter;
		var ext;
		while(pos<lim){
			ext=grabExtension(fileReaders[pos].Name)[0];
			if(ext.toLowerCase()==="stl"){
				partGeom=parseStl(fileReaders[pos].Reader.result);
				if(partGeom===null){
					partGeom=parseStlBinary(fileReaders[pos].Reader.result);
				}
				//console.log(partGeom);
				var postMaterial =
				partMesh=new THREE.Mesh(
						partGeom,
						getStdMaterial()
				);
				parts.push({
					Mesh: partMesh,
					Name: fileReaders[pos].Name
				})
				scene.add(partMesh);

			}
			pos++;
		}
		requestAdvance(1);
	}

}