p5.js Image resize() Method

The resize() method of p5.Image in p5.js is used to resize the image to the given width and height. The image can be scaled proportionally by using 0 as one of the values of the width and height.

Syntax:

resize( width, height )

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

width: It is a number that specifies the width of the resized image.
height: It is a number that specifies the height of the resized image.

The examples below illustrate the resize() method in p5.js:

Example 1:

Javascript

function preload() {
    img_orig = loadImage("sample-image.png");
}
  
function setup() {
    createCanvas(500, 400);
    textSize(20);
  
    heightSlider =
      createSlider(0, 500, 200);
    heightSlider.position(30, 300);
  
    widthSlider =
      createSlider(0, 500, 400);
    widthSlider.position(30, 340);
}
  
function draw() {
    clear();
  
    text("Move the sliders to resize the image",
      20, 20);
    image(img_orig, 20, 40);
  
    new_height = heightSlider.value();
    new_width = widthSlider.value();
      
    img_orig.resize(new_width, new_height);
}

Output:

Example 2:

Javascript

function preload() {
    img_orig = loadImage("sample-image.png");
}
  
function setup() {
    createCanvas(500, 400);
    textSize(20);
  
    sizeSlider =
      createSlider(0, 500, 250);
    sizeSlider.position(30, 240);
}
  
function draw() {
    clear();
  
    text("Move the slider to resize " +
      "the image proportionally", 20, 20);
    image(img_orig, 20, 40);
  
    new_size = sizeSlider.value();
      
    // Setting one of the values as 0,
    // for proportional resizing
    img_orig.resize(new_size, 0);
}