We used Sphere Colliders for creating the interactive virtual hand. Each joint in the thumb, index finger, middle finger, ring finger, and pinky, along with the wrists and palms, is equipped with a sphere collider. Specifically, we have 59 sphere colliders per hand and 118 colliders in total for both hands as shown in Figure 2. To simulate the physical interaction between the hands and the fluid, each particle in the fluid constantly monitors its distance from the nearest sphere collider. We have let every fluid particle checks its proximity to each sphere collider. If the distance between a particle’s center and a collider’s center is less than the collider’s radius, a collision is detected. Once a collision had been detected, a force was calculated aiming to push the particle away from the collider. The virtual hand intergrating with simulated fluid in the scence is shown in Figure 1.
