p5.js Keyboard | keyIsPressed

The keyIsPressed variable in p5.js is true if any key is pressed and false if no keys are pressed.

Syntax:

keyIsPressed

Below program illustrates the keyIsPressed variable in p5.js:
Example-1:

filter_none

edit
close

play_arrow

link
brightness_4
code

let valueX;
let valueY;
  
function setup() {
    // Create Canvas of size 500*500
    createCanvas(1000, 500);
}
  
function draw() {
    
    // set background color
    background(200);
    fill('green');
    
    // set text and text size
    textSize(25);
    
    text('Press Key to change the figure '+
         'from Circle To Keyboard', 30, 30);
    
    // use of keyIsPressed Variable
    if (keyIsPressed) {
        // draw ellipse  
        ellipse(mouseX, mouseY, 115, 115);
        fill('red');
        text("Key Is Pressed", 100, 300);
    } else {
        rect(mouseX / 2, mouseY / 2, 300, 200);
    }
  
}

chevron_right


Output:
Before:

After:

Example-2:

filter_none

edit
close

play_arrow

link
brightness_4
code

let valueX;
let valueY;
  
function setup() {
    
    // Create Canvas of size 500*500
    createCanvas(500, 500);
}
  
function draw() {
    
    // set background color
    background(200);
    
    fill('green');
    
    // set text and text size
    textSize(25);
    text('Click to flip the the figure', 30, 30);
    
    // use of KeyIsPressed
    if (keyIsPressed) {
        fill(valueX, 255 - valueY, 255 - valueX);
        
        // draw rectangle 
        rect(mouseX, mouseY, 115, 115);
        fill(valueY, 255 - valueX, 255 - valueX);
  
        rect(mouseX, mouseY + 115, 115, 115);
        fill(255 - valueY, 255 - valueX, 255 - valueY);
    } else {
        rect(mouseX - 115, mouseY, 115, 115);
        fill(255 - valueY, 255 - valueY, 255 - valueY);
  
        rect(mouseX - 115, mouseY + 115, 115, 115);
    }
}

chevron_right


Output:
Before:

After:

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



My Personal Notes arrow_drop_up

Check out this Author's contributed articles.

If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute.geeksforgeeks.org or mail your article to contribute@geeksforgeeks.org. See your article appearing on the GeeksforGeeks main page and help other Geeks.

Please Improve this article if you find anything incorrect by clicking on the "Improve Article" button below.




Article Tags :

Be the First to upvote.


Please write to us at contribute@geeksforgeeks.org to report any issue with the above content.