WebVR with ThreeJS : how to set initial camera position?

Hye,

I’m trying to use WebVR on a ThreeJS scene. I would like to setup the initial point of view when entering on virtual reality. And it doesn’t work.

I tried that in the render function

camera.position.set(22.909, 491.937, 468.292);
camera.position.z = 22.909;
camera.position.y = 491.937;
camera.position.x = 468.292;
camera.lookAt(new THREE.Vector3(471.640, -614.395, -578.009)); 			
viewer.scene.view.position.set(-3.052, -380.615, -465.823);
viewer.scene.view.lookAt(471.640, -614.395, -578.009);
renderer.render( viewer.scene.scene, camera );

And that on the initialisation

viewer.scene.view.position.set(-3.052, -380.615, -465.823);
viewer.scene.view.lookAt(471.640, -614.395, -578.009);
var camera = new THREE.PerspectiveCamera( 70, window.innerWidth / window.innerHeight, 0.0001, 2000 );
camera.position.set(-3.052, -380.615, -465.823); // Set position like this
camera.lookAt(new THREE.Vector3(471.640, -614.395, -578.009)); // Set look at coordinate like this
viewer.scene.scene.add( camera );

Please, if you know how to define the original position of the user when entering on VR tell me how !