Every shape you see is drawn from a real equation — change the math and the shape changes, live. Nothing here is a fixed picture.
Explore (the easy way): pick a shape from the gallery — a donut, a ripple pond, a planet orbit — then nudge plain-language sliders like twist, size and waviness. Hit 🎲 Surprise me to jump somewhere new.
Build (the real thing): type your own formulas for x(u,v), y, z or a vector field, set the slider ranges, change the mesh resolution. For when you want the actual math.
Tap Edit the math ▾ in Explore to peek at the equation behind any preset — that is your on-ramp to Build.
Shortcuts: E Explore · B Build · S play/pause a sim · R reset · drag to orbit, scroll/pinch to zoom. Bad formulas never break the page — you get a friendly note and your last good shape stays.
🔗 Share this scene
A scene is fully described by its inputs — the preset, your equations, every slider, the seed and the camera. Share it and your friend (or teacher) gets the exact same scene back, with no drift.