p5.js noFill() Function

The noFill() function is used to disable the filling geometry. If noStroke() and noFill() function are called simultaneously then nothing will be drawn on the screen.

Syntax:

noFill()

Parameters: This function does not accept any parameter.

Below examples illustrate the noFill() function in p5.js:

Example 1:

function setup() {

    // Create Canvas of given size
    createCanvas(400, 300);
}

function draw() {

    // Set the background color
    background(220);

    // Use fill() function to fill color
    fill('green')
    // Draw a line
    rect(50, 50, 150, 150);

    // Use noFill() function
    noFill();

    // Draw a line
    rect(100, 100, 150, 150);
}

Output:

Example 2:

function setup() {

    // Create Canvas of given size
    createCanvas(400, 300);
}

function draw() {

    // Set the background color
    background(220);

    // Use noFill() function
    noFill();

    // Draw a line
    circle(140, 100, 150);

    // Use fill() function to fill color
    fill('green')
    // Draw a line
    circle(240, 100, 150);
}

Output:

Reference: https://p5js.org/reference/#/p5/nofill