Fills all empty cells in the quadrille with the specified value — filled cells are never overwritten (to re-value those, use replace(value); to start over, clear first). Returns the quadrille (chainable).

Example#

(click or press a key to toggle between filling empty cells and resetting to random colors)

Quadrille.cellLength = 20;
let quadrille;
let filled = false;

function setup() {
  createCanvas(400, 400);
  reset();
}

function draw() {
  background(0);
  drawQuadrille(quadrille);
}

function mouseClicked() {
  filled = !filled;
  filled ? quadrille.fill(255) : reset();
}

function keyPressed() {
  filled = !filled;
  filled ? quadrille.fill(255) : reset();
}

function reset() {
  quadrille = createQuadrille(20, 20, 100, color('red'));
  quadrille.rand(100, color('lime')).rand(100, color('blue'));
}

Empty cells appear black because the background is set to black (background(0)), while the fill color is white (fill(255)).

One value, one instance. A non-factory value is stored as-is in every cell: all cells filled by the call share the same instance. That single fact powers two idioms elsewhere in the API — strict search matches across cells (===), and flood fill/flood clear treat them as one connected region, since the flood matches the start cell’s value by identity. Per-cell instances instead — e.g. a fresh color('green') per cell via Quadrille.factory — would strict-match nothing and flood nowhere. When sharing is the point, Quadrille.singleton(value) names the intent in code: a pure identity function — the value passes through unmodified — that reads as the semantic mirror of Quadrille.factory.

Syntax#

fill(value)

Parameters#