p5.js | rotateX() function

The rotateX() function in p5.js is used to rotate the shape or an object around the x-axis.
Syntax:

rotateX(angle)

Parameters: This function accepts single parameter angle which stores the angle by which rotation is to be done.
Below programs illustrate the rotateX() function in p5.js:
Example 1: This example uses rotateX() function to rotate an object around the x-axis. 

javascript

function setup() {

    // Create Canvas of given size
    createCanvas(800, 550, WEBGL);
}

function draw() {

    // Set the background color
    background(220);

    // Set stroke weight
    strokeWeight(12);

    // Rotation function
    rotate(PI / 7.0);

    // Call to rotateX function
    rotateX(millis() / 1000);

    // Draw rectangle
    rect(3, 3, 200, 39);

    // Draw ellipse
    ellipse(160, 160, 40, 40);
}

Output:

Example 2: This example uses rotateX() function to rotate an object around the x-axis. 

javascript

function setup() {

    // Create canvas of given size
    createCanvas(500, 500, WEBGL);
}

function draw() {

    // Set background color
    background(200);

    // Set property to rotate the
    // shape about the x-axis
    rotateX(frameCount * 0.01);

    // Set stroke weight
    strokeWeight(2);

    // Set fill color
    fill("green");

    // Draw of height 100 and radius 50
    cylinder(50, 100);
}

Output:

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