This example renders an animated, abstract visualization of thousands of lines and circles generated procedurally from trigonometric functions. The scene continuously updates every 10 milliseconds, with shapes shifting position, radius, and color via the interpolateRainbow scale. Built with D3 v7, the code uses selections such as `.selectAll()` and `.join()` to bind new data to SVG elements, while the entire SVG rotates dramatically based on nested sine calculations. The fork explores D3’s data-join and update patterns, set against a black background.