This program draws a checkerboard

in black and white

​

by Daniel Weiner

3/1/21

*/

​

function setup() {

  createCanvas(400, 400);

  background(220);

  fill(220);

  let numRows = 8;

  let numCols = 8;

  let sqW = width / numRows;

  let sqH = sqW;

  for (let i = 0; i < numRows; i++)  {

    for (let j = 0; j < numCols; j++) {

      rect(sqW*j, sqH*i, sqW, sqH);

      // only draw ellipse if i+j is even

      let drawCirc = (i+j)%2 == 0;

      if (drawCirc) {

        ellipse(sqW*j+sqW/2, sqH*i+sqH/2, sqW, sqH);

      } 

    }

  }

}

​

function draw() {

}