ArcRotateCamera Advanced Features

// Auto-rotation when idle
camera.useAutoRotationBehavior = true;
camera.autoRotationBehavior.idleRotationSpeed = 0.2;
camera.autoRotationBehavior.idleRotationWaitTime = 3000; // ms

// Bouncing behavior when hitting limits
camera.useBouncingBehavior = true;
camera.bouncingBehavior.transitionDuration = 150; // ms