p5.js mouseMoved() Function
Last Updated :
04 Mar, 2021
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The mouseMoved() function in p5.js is called every time the mouse moves and a mouse button is not pressed.
Syntax:
javascript
Output:
Example 2: This example uses mouseMoved() function change the color of ellipse.
javascript
Output:
Reference: https://p5js.org/reference/#/p5/mouseMoved
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;
}
}
// 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;
}
