This example demonstrates a custom force-directed simulation where 250 nodes, grouped into five color-coded types, repel each other and are pulled toward the center while colliding and settling into a stable clustered layout. Using d3.forceSimulation with configurable forces for charge, x/y centering, and collision, the nodes animate in SVG as the simulation ticks. The rendering includes touch interaction support, allowing users to place temporary circular touch zones on the canvas that subtly pull nearby nodes toward them through the tick handler’s custom logic.