Enable your camera. Video stays on this device.

Hold a form

Extend both index fingers and thumbs. Move or turn your hands to place the form.

Bloom

• A · first hand aperture → color, full hue circle
• B · second hand aperture → rotation speed, 0–1 turn/sec
• C · index span → shape, in the order below
• D · thumb span → tube width, solid depth or inflation

1. Triangle frame
2. Square frame
3. Hexagon frame
4. Smooth donut
5. Square-base pyramid
6. Cube
7. Hexagonal prism
8. Star crystal

Increasing C advances this list. D thickens the first four tubes, raises the pyramid, inflates the cube's size, deepens the prism and grows the crystal spikes.

First and second follow the hands initially shown on the left and right of the mirror. Crossing keeps their roles. These distances are linked, so a gesture can change several controls. Color and speed leave the base shape unchanged.

Tap or click an effect icon. F fullscreen; C camera; ? controls; Escape closes this dialog.