The mouseMoved() function in p5.js is called every time the mouse moves and a mouse button is not pressed.
Syntax:
mouseMoved(Event)
Parameters: This function accepts single parameter Event which is optional.
Below programs illustrate the mouseMoved() function in p5.js:
Example 1: This example uses mouseMoved() function change the rectangle color when mouse move over.
function setup() { // Create Canvas of size 500*500 createCanvas(500, 500); } let value = 0; function draw() { // SEt background color background(200); // Set the filled color fill(value); // Create rectangle of given size rect(25, 25, 460, 440); // Set the text color fill('lightgreen'); // Set font size textSize(15); // Display the text text('Move Mouse Across the page to change its value.', windowHeight/6, windowWidth/4); } function mouseMoved() { value = value + 5; if (value > 255) { value = 0; } } |
Output:
Example 2: This example uses mouseMoved() function change the color of ellipse.
// Declare a variable let value; function setup() { // Create Canvas of size 500*500 createCanvas(500, 500); } function draw() { // Set background color background(200); // fill color according to // mouseMoved() function // Set the color fill(value, value, value); // Draw ellipse ellipse(mouseX, mouseY, 115, 115); } function mouseMoved() { value = mouseX%255; } |
Output:
Reference: https://p5js.org/reference/#/p5/mouseMoved
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