p5.js | Mouse | mouseButton
The mouseButton variable in p5.js is used to get automatically which kind of key is pressed on mouse. The value of the system variable mouseButton is either LEFT, RIGHT, or CENTER depending on which button was pressed last.
Syntax:
mouseButton
Below programs illustrate the mouseButton variable in p5.js:
Example 1: This example uses mouseButton variable to detect the mouse button.
function setup() { // Create canvas createCanvas(500, 500);} function draw() { // Set background color background(237, 34, 93); // Fill color fill(0); if (mouseIsPressed) { if (mouseButton === LEFT) { ellipse(height/2, width/2, 100, 100); } if (mouseButton === RIGHT) { rect(height/2, width/2, 100, 100); } }} |
Output:
Example 2: This example uses mouseButton variable to detect the mouse button.
function setup() { // Create canvas createCanvas(500, 500); // Set the text size textSize(40); } function draw() { // Set background color background(237, 34, 93); // Set the text color fill(255); // Check the status of the mouse if (mouseIsPressed) { text(mouseButton, height/2, width/2); }} |
Output:
Reference: https://p5js.org/reference/#/p5/mouseButton
