Rotating 3d object with texture issue - object

Question

I'm trying to imitate http://threejs.org/examples/canvas_geometry_cube.html
via using a 3d.obj file with a texture mapping.
But i keep receiving the following error plus the rotation is totally off.
Uncaught TypeError: Cannot read property 'rotation' of undefined
Full demo is here http://wunderfauks.com/test/examples/test.html

Answer 1

Where you assign the value for group the code for loading has not executed yet and obj does not have a value. Move those 10 lines of code inside your loading function.

Answer 2

I've done it, if anyone needs to know you need to apply a matrix rotation.
Here's an example.
function onWindowResize() {
windowHalfX = window.innerWidth / 2;
windowHalfY = window.innerHeight / 2;
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
renderer.setSize( window.innerWidth, window.innerHeight );
}
//
function onDocumentMouseDown( event ) {
event.preventDefault();
document.addEventListener( 'mousemove', onDocumentMouseMove, false );
document.addEventListener( 'mouseup', onDocumentMouseUp, false );
document.addEventListener( 'mouseout', onDocumentMouseOut, false );
mouseXOnMouseDown = event.clientX - windowHalfX;
targetRotationOnMouseDown = targetRotation;
}
function onDocumentMouseMove( event ) {
mouseX = event.clientX - windowHalfX;
targetRotation = targetRotationOnMouseDown + ( mouseX - mouseXOnMouseDown ) * 0.02;
}
function onDocumentMouseUp( event ) {
document.removeEventListener( 'mousemove', onDocumentMouseMove, false );
document.removeEventListener( 'mouseup', onDocumentMouseUp, false );
document.removeEventListener( 'mouseout', onDocumentMouseOut, false );
}
function onDocumentMouseOut( event ) {
document.removeEventListener( 'mousemove', onDocumentMouseMove, false );
document.removeEventListener( 'mouseup', onDocumentMouseUp, false );
document.removeEventListener( 'mouseout', onDocumentMouseOut, false );
}
function onDocumentTouchStart( event ) {
if ( event.touches.length === 1 ) {
event.preventDefault();
mouseXOnMouseDown = event.touches[ 0 ].pageX - windowHalfX;
targetRotationOnMouseDown = targetRotation;
}
}
function onDocumentTouchMove( event ) {
if ( event.touches.length === 1 ) {
event.preventDefault();
mouseX = event.touches[ 0 ].pageX - windowHalfX;
targetRotation = targetRotationOnMouseDown + ( mouseX - mouseXOnMouseDown ) * 0.05;
}
}
function animate() {
requestAnimationFrame( animate );
render();
stats.update();
}
function render() {
//plane.rotation.y = group.rotation.y += ( targetRotation - group.rotation.y ) * 0.05;
var rotation = new THREE.Matrix4().makeRotationY(Math.PI/2);
var translation = new THREE.Matrix4().makeTranslation(0, 0, 0);
rotation = group.rotation.y += (targetRotation - group.rotation.y);
var transformation = new THREE.Matrix4().makeTranslation(0, 0, 0).makeRotationY(rotation * 0.01 * 0.3) ;
group.applyMatrix(transformation);
renderer.render( scene, camera );
}