https://playground.babylonjs.com/#C6V6UY#436
I make a little change to the official demo of virtual joystick, I keep the left joystick to move camera and delete the right joystick. Instead, I just use the default FreeCamera to control camera’s rotation. The peoblem is that: when I move to right and at the mean time I rotate the camera to the right, the camera will jitters a lot. Any other direction has no this problem.