Initial camera transform values

[piedoom]

I am trying to create a camera with a default position, for ease of use. I noticed that as soon as the camera is enabled, the initial set rotation is discarded. I suspect this has to do with something like pitch and yaw defaulting to 0 and resetting any rotations.

For reproducing, try the following:

// ... create the camera
camera.transform = Transform::from_xyz(10f32, 10f32, 10f32).looking_at(Vec3::ZERO, Vec3::Y);

[Gnurfos]

Pull request #15 fixes this