The mouseX variable in p5.js is used to store the current horizontal position of the mouse, relative to (0, 0) of the canvas. If touch is used instead of mouse input, mouseX will hold the x value of the most recent touch point.
Syntax:
mouseX
Below programs illustrate the mouseX variable in p5.js:
Example 1: This example uses mouseX variable to display position.
function setup() {           // Create canvas     createCanvas(1000, 400);           // Set the text size     textSize(20); }    function draw() {           // Set background color     background(200);           // Create rectangle     rect(mouseX, height/2, 30, 30);           // Display position     text("Position of mouse relative to canvas is "            + mouseX, 30, 40); } |
Output:
Example 2: This example uses mouseX variable to display position.
function setup() {       // Create canvas     createCanvas(1000, 400);           // Set font size     textSize(20); }    function draw() {           // Set background color     background(200);           // Create circle     circle(mouseX, mouseY, 30);           // Display position     text("Position of mouseX relative to canvas: "            + mouseX, 30, 40); } |
Output:
Reference: https://p5js.org/reference/#/p5/mouseX
