Splat Equation

Splashery stretches a drumhead over this Splash's outline, twelve inches across, and finds the ways it can ring. Its lowest is 433.6 Hz, 25 cents flat of A4. The next fifteen are its overtones, and each one draws its own figure: sand gathers on the lines that stay still.

Tap to play time t. Pick a program, or type your own equations, in the Splash tab.

Every splat has a place and a color. Here you program them with math: each splat gets two numbers, u and v, and your equations x, y and z turn them into its place, while hue (or r, g and b) gives its color. Time t runs from 0 to 2π, so the shape can move.

Tap it to play one cycle of t and watch the shape move. Pick a sphere, a torus, a Möbius strip, a seashell, a trefoil knot, a wave, a spiral galaxy or a Klein bottle in the Splash tab, or type your own, such as z = sin(u + t). Under Splats, Solid shows a clean surface, Fine a finer one, and Dots every splat on its own. The Splash Manual explains the whole language.

Made in Splashery. Its code is MIT.

This link opens it in the Playground. To put it on your own page, add the element and one script tag. Every option.