class StlMultiLoader {
    constructor() {
        this.loader = new THREE.STLLoader();
    }
    load(filenamesVec, callback) {
        var filename = filenamesVec[0];
        var name = filename.slice(0, filename.lastIndexOf('.'));
        name = name.slice(name.lastIndexOf('/') + 1);
        this.loader.load(filename, (geometry) => {
            this.out = this.out || {};
            this.out[name] = geometry;
            if (filenamesVec.length > 1) {
                this.load(filenamesVec.slice(1), callback);
            } else {
                callback(this.out);
            }
        }, undefined, (e) => {
            console.log("Unable to read " + filename + " " + e + " " + e.stack);
        });
    }
}