fill(row, col, value, border)

Fills a specific cell and all connected cells holding the same value as it with value via flood fill; with border = true, the rim where the flood stops is filled too.

Example#

(click on any cell to perform flood fill with selected border option; press any key to reset)

code

Quadrille.cellLength = 20;  
let quadrille;  
let mode;  

function setup() {  
  createCanvas(400, 400);  
  mode = createSelect();  
  mode.option('flood fill without border');  
  mode.option('flood fill with border');  
  mode.selected('flood fill without border');  
  reset();  
}  

function draw() {  
  background('black');  
  drawQuadrille(quadrille);  
}  

function mouseClicked() {  
  const row = quadrille.mouseRow;  
  const col = quadrille.mouseCol;  
  const border = mode.value() === 'flood fill with border';  
  quadrille.fill(row, col, 255, border);  
}  

function keyPressed() {  
  reset();  
}  

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

Connected means same value, and sameness is identity (===) — see clear(row, col, directions) for the identity note and clear(row, col, border) for the rim semantics; here the rim is filled with value instead of cleared.

Syntax#

fill(row, col, value, border)

Parameters#

Param	Description
`row`	Number: row index of the cell to start filling [0..height]
`col`	Number: column index of the cell to start filling [0..width]
`value`¹	Any: A valid JavaScript value
`border`	Boolean: Specifies whether to include the border of the flood fill area. Default is `false`

A plain function value is stored, not called — it becomes a per-cell display routine ({ row, col, options }) => { ... } (see options). To have a function evaluated per cell at fill time — a fresh object or a varied tile per cell — tag it: Quadrille.factory(({ row, col }) => new Object(...)). ↩︎