Marcelo Paiva
Illustrations
Theme

All illustrations

A person seen from behind sits at a desk facing a monitor, surrounded by swirling billows and a pencil cup.

Draws this one again — same subject and the same people, a new palette and a new angle on it, described afresh. It replaces the drawing on this page for everyone, until somebody draws another. Costs the site about eight cents, and a few seconds.

Or press the left arrow and the right arrow.

What should an agent be allowed to do without asking?

Writingread the piece

Asked for
A person at a desk clicking a redraw button while six identical illustration files overwrite themselves onscreen
Drawn with (triad)
#876b24#69cfd4#8f3c8f

Why these three

Three points spaced evenly around the wheel — the furthest apart three hues can be.

  1. SeedSHA-256 of what-should-an-agent-be-allowed-to-do-without-asking, which is the same every time and different for every piece.
  2. Base hueThe first two bytes as a fraction of 65,535, times 360 = 55°.
  3. GeometryThe third byte modulo 4 picks triad, which adds 0°, 120°, 240°.
  4. WobbleThree more bytes shift each by up to ±12° — 11.7°, +7.8°, +4.4° — so two pieces that draw the same geometry are still not the same shape on the wheel.
  5. Result#876b2443° at 73% saturation, 53% value#69cfd4183° at 50% saturation, 83% value#8f3c8f300° at 58% saturation, 56% value

Saturation never drops below 72% and value never below 78%, which is what keeps a hue reading as the colour it was chosen to be rather than as a dark. More on how these are made.