p5.js resizeCanvas() Function

0 0 1 minute read

The resizeCanvas() function is used to resize the canvas to the height and width given as parameters. The canvas is immediately redrawn after the resize takes place unless the optional ‘noRedraw’ parameter is set to true.

Syntax:

resizeCanvas(w, h, [noRedraw])

Parameters: This function accepts three parameters as mentioned above and described below:

w: It is a number representing the width of the new canvas.
h: It is a number representing the height of the new canvas.
noRedraw: It is a boolean value which specifies if the canvas is immediately redrawn when resized.

Below example illustrates the resizeCanvas() function in p5.js:

Example 1: In this example, we fixed the increase size.

function setup() { 
  createCanvas(200, 200); 
  textSize(16); 
  
  rect(0, 0, height, width); 
  background('green'); 
  text("This is the canvas area", 20, 80); 
  text("Canvas height: " + height, 25, 100); 
  text("Canvas width: " + width, 25, 120); 
} 
  
function mouseClicked() { 
  resizeCanvas(300, 300, true); 
  
  rect(0, 0, height, width); 
  background('green'); 
  text("This is the canvas area", 50, 130); 
  text("Canvas height: " + height, 50, 150); 
  text("Canvas width: " + width, 50, 170); 
} 

Output:

Example 2: In this example, size depends on the click position.

function setup() { 
  createCanvas(200, 200); 
  textSize(16); 
  
  rect(0, 0, height, width); 
  background('green'); 
  text("Press anywhere to resize", 10, 20); 
  text("Canvas height: " + height, 10, 40); 
  text("Canvas width: " + width, 10, 60); 
} 
  
function mouseClicked(event) { 
  // resize canvas to the 
  resizeCanvas(event.x, event.y); 
  
  rect(0, 0, height, width); 
  background('green'); 
  text("Press anywhere to resize", 10, 20); 
  text("Canvas height: " + height, 10, 40); 
  text("Canvas width: " + width, 10, 60); 
} 

Output:

Online editor: https://editor.p5js.org/
Environment Setup: https://www.zambiatek.com/p5-js-soundfile-object-installation-and-methods/

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

Whether you’re preparing for your first job interview or aiming to upskill in this ever-evolving tech landscape, zambiatek Courses are your key to success. We provide top-quality content at affordable prices, all geared towards accelerating your growth in a time-bound manner. Join the millions we’ve already empowered, and we’re here to do the same for you. Don’t miss out – check it out now!