Fusion’s curve editor employs splines to facilitate smooth transitions between keyframes, allowing for interpolation as linear, bezier, or b-splines. This capability enables the application of custom curves that can loop, reverse, or ping pong among keyframes, resulting in intricate animations. Furthermore, you can manipulate, expand, and compress groups of keyframes to generate remarkable variations in motion. The replicate tool is designed to effortlessly produce rows of duplicated objects, filling various patterns with ease. By merely adjusting parameters on these replicated items, you can craft animations that appear both complex and polished. Additionally, there are options for randomization that introduce subtle differences, leading to animations that possess an organic quality that other systems may struggle to achieve. You can also create stunning particle effects that shimmer, swirl, and twinkle by employing physics properties such as avoidance, gravity, and bounce, with each behavior contributing to the natural movement of the particles. In essence, the combination of these features allows for the creation of visually dynamic animations that captivate and engage viewers.