​

function setup() {

  createCanvas3D(600, 400);

  background3D("#333333");

​

  diffuse("#ff7d00");  

  sphere(0, 0, 0, 1);

}

​

function draw() {}

​

// when pressing H key we change the showingGrid flag to its opposite and use it as parameter for showGrid()

function keyPressed() {

  if (key == "h") {

    showingGrid = !showingGrid;

    showGrid(showingGrid);

  }

}