Oleg Orlov

var Test = { isThread: true };

Test.Checker = function() {
    this.bufferMaterial = undefined;
};
Test.Checker.prototype.checkTextures = function( scene ) {
    if ( scene !== undefined && scene !== null) {
        scene.children.filter(function( item ) {
            if ( item instanceof THREE.Mesh ) {
                this.bufferMaterial = item.material;
            }
        });
    }
};
Test.Checker.prototype.changeTexture = function() {
    if ( this.bufferMaterial !== undefined ) {
        this.bufferMaterial = new THREE.MeshBasicMaterial({
            map: THREE.ImageUtils.loadTexture( '/images/textures/box2.jpg' )
        });
    }
    else return -1;
};

onmessage = function( sender ) {
    var objectTest = new Test.Checker();
    objectTest.checkTextures( sender.data );
    if ( this.bufferMaterial !== undefined ) this.changeTexture();
};