Impact force is common haptic feedback on virtual reality (VR) controllers, such as hitting objects with weapons or rackets. It applies to different points of application of force (PAFs) and directions in varied scenarios. Therefore, we propose a controller, transPAF, to render omnidirectional impact feedback with dynamic PAF all round the controller for versatile VR scenarios. transPAF consists of a controller, a semicircular track, a linear track, and an impactor, which are all rotatable. The impactor can move to any position in a sphere, which means the whole 3D space all round the controller, and rotate in any direction. In the demonstration, users can use four weapons, including a sword, a pickaxe, a hook, a dagger, and a tennis racket in the VR scene to attack monsters and hit balls, so that they can feel the sensation of the impact force applied to different PAFs and directions.
