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Engine · v5.8.0

Circus

A circus drawn with code and played by your song: the big top at night with its bulbs chasing on the beat and the curtains opening on the drop, the ringmaster in the spotlight, a flying trapeze whose swing keeps the bars and whose catch lands on the downbeat, a juggler throwing real siteswap patterns that change with the song, a wire walker who wobbles on the beat and recovers, and a grand finale with every act at once.

Circus engine preview

6 modes

Launch modes

The Big Top mode

The Big Top

The big top at night from outside: striped canvas sagging between its poles, strings of bulbs chasing on every beat, flags in the wind, searchlights sweeping with the bars, and the entrance curtains opening on the drop onto the show's light.

The Ring mode

The Ring

Inside the ring: the ringmaster in a follow-spot presenting on every downbeat, tumblers flipping across the ring on the bars, a cheerful clown juggling, the stands full under the striped roof.

Trapeze mode

Trapeze

The flying trapeze: the flyer's swing keeps the bars, lets go near the top, turns somersaults through the air and lands in the catcher's hands on the downbeat, the net below and the spots following.

The Juggler mode

The Juggler

A juggler close up in the spotlight, throwing real siteswap patterns on the beat: a calm cascade in the quiet, higher patterns as the song lifts and four objects on the drop, the throws' heights growing with their values.

High Wire mode

High Wire

The high wire seen along its length: the walker crosses once a phrase, a step a beat, wobbling with each step and steadied by the pole, stumbling on the drop and recovering, high above the ring.

Grand Finale mode

Grand Finale

Every act at once: the flyer and the catcher above, the wire walker, the ringmaster, tumblers, jugglers and the clown in the ring, spotlights sweeping and confetti falling, all of it bursting on the drop.

51 controls

Controls

ControlGroupTypeDefaultAnimationAudio
Primary colorPrimary color used by the engine paletteStylecolor#ffcf5cYesNo
Secondary colorSecondary color used by the engine paletteStylecolor#d62839YesNo
BackgroundBackground used by the engine paletteStylecolor#0a0c26YesNo
OpacityVisualizer opacityTransformrange1YesNo
SensitivityBounded overall audio responseAudiorange1YesNo
Spectrum rangeHow much of the 40 Hz to 14 kHz range the visual spans, from the bass up. Lower it to give the bass and mids more of the barsAudiorange1YesNo
Frequency scaleHow the bars are spread across the frequencies. Log spreads them by octave, mel by how pitch is heard, and linear by hertz, which gives most bars to the highsAudioselectlogNoNo
Auto-levelLifts every part of the spectrum to its own recent range, so quiet highs move as much as loud bass. A note held for several seconds settles lower as it adapts. 0 shows the raw spectrumAudiorange0.8YesNo
Primary audio sourcePrimary audio sourceAudioselectbassNoNo
Frequency focusWhich part of the spectrum drives this visual; while no explicit audio source is set, the motion envelope follows this selectionAudioselectfullNoNo
Burst intensityGlow and trail swell on sharp hits; 0 keeps bursts offAudiorange0YesNo
Ambient bedProminence of the standing background layer behind the beat-born elementsEffectsrange1YesNo
Wake lengthHow far motion trails stretch behind beat-born travelers; 0 removes the wakeEffectsrange1YesNo
Audio contributionMaximum contribution from the primary audio routeAudiorange0.55YesNo
Audio dynamicsHow much of the band's movement reaches the visual. 1 = full dynamics; 0 holds it at a steady level for a calmer, more constant lookAudiorange1YesNo
Audio attackEnvelope attack in millisecondsAudiorange45YesNo
Audio releaseEnvelope release in millisecondsAudiorange240YesNo
Geometry scaleGeometry scaleGeometryrange1YesYes
Motion directionRotate the animated visual pass to face this direction; the general background stays fixedMotionselectnoneNoNo
SpeedTime-based motion; default major cycle is 6–12 secondsMotionrange0.1YesYes
Color modeDuo palette, primary→secondary gradient, or full rainbow sweepStyleselectduoNoNo
GlowGlowEffectsrange0.55YesYes
Global glowShared emissive strength across the frameEffectsrange0.35YesYes
Pulse intensityBeat pulse scale for spawn, size, and shakeEffectsrange1YesYes
Beat responseHow hard every engine hits on each detected beatAudiorange1.2YesYes
Beat smoothingHow long each beat hit rings out before it settlesAudiorange0.35YesYes
Beat attackSeconds for a hit to swell to full. 0 snaps instantlyAudiorange0YesYes
Beat releaseSeconds for a hit to fade, overriding Beat smoothing. 0 follows itAudiorange0YesYes
Beat shakeFrame kick strength on each beatEffectsrange0.6YesYes
Motion echoMotion echoEffectsrange0YesYes
BlurBlurEffectsrange0YesYes
Chromatic aberrationChromatic aberrationEffectsrange0YesYes
Beat sync allRoute beat energy into spawn, shake, pulse, speed, and scaleAudiobooleantrueNoNo
Symmetry and tilingReshape the whole picture: mirror it, fold it into a kaleidoscope, or tile it (the plane groups p1, p2, p4m and p6m)Shape and symmetryselectnoneNoNo
Kaleidoscope foldsHow many mirrored copies go round the kaleidoscopeShape and symmetryrange6YesNo
Symmetry angleTurns the mirror line, or the kaleidoscope, in degreesShape and symmetryrange0YesYes
Kaleidoscope spinHow fast the kaleidoscope turns, in turns per bar of the song (0.25 is once a phrase)Shape and symmetryrange0YesYes
Tile sizeEach tile's size as a share of the frameShape and symmetryrange0.5YesNo
Tile gapThe gap between tiles, as a share of a tile; it shows the background colourShape and symmetryrange0YesNo
WarpBend the whole picture: a twist, a bulge, waves or ripples that move once a bar, a polar unroll, or a fisheye lensShape and symmetryselectnoneNoNo
Warp amountHow strong the warp isShape and symmetryrange0.5YesYes
Warp centreWhere the warp is centred in the frameShape and symmetryselectcentreNoNo
BulbsHow bright the strings of bulbs, the marquee and the ring's lights. They chase a step on every beatShowrange1YesYes
SpotlightsHow bright the follow-spots, the washes and the searchlights. They lift with the kickShowrange1YesYes
HazeHaze in the beams: how much of the light you see in the air, and the dust drifting in itShowrange0.6YesYes
DaringHow bold the acts are: the flyer's somersaults and kick, the wire walker's wobble, the tumblers' height and the juggling patternsActsrange0.6YesYes
PropsWhat the jugglers throw: glowing balls that light in a colour for each throw's height, spinning clubs or ringsActsselectballsNoNo
ConfettiConfetti and streamers: over the grounds when the doors open on the drop, and through the finaleShowrange1YesYes
CrowdHow full the stands are, and the audience's lights winking among themShowrange1YesYes
VariationAnother take on the same show: the performers' looks, the crowd, the stars and the wagons. The same number always gives the same sceneShowrange0YesNo
Title and artistShow or hide the song title and artist this visualizer draws.TextselectautoNoNo