​

​

function setup() {

  createCanvas(400, 400);

}

​

function draw() {

  background(220);

  for (let i = 1; i <= PANES; i++) {

    const rightBoundary = i*width/PANES;

    const leftBoundary = (i-1)*width/PANES;

    // print(rightBoundary);

    // print(leftBoundary);

    if (mouseX < rightBoundary && mouseX > leftBoundary) {

            strokeWeight(0);

        fill(255, 0, 0);

      rect(leftBoundary, 0, width/PANES, height); 

    }

    strokeWeight(1);

    line(i*width/PANES, 0, i*width/PANES, height);

  }

}