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Node Jimp | rotate

  • Last Updated : 19 Feb, 2021

Introduction 
The rotate() function is an inbuilt function in Nodejs | Jimp which rotates the image clockwise and the dimensions of the image remain same.
Syntax: 
 

rotate(r, mode, cb)

Parameter: 
 

  • r – This parameter stores the rotation angle for the image.
  • mode – This is optional parameter which stores the scaling method.
  • cb – This is optional parameter which is invoked when compilation is complete.

Input Images: 
 

 



Step 1 : Setting up environment 

npm init -y

Step 2 : Install jimp

npm install jimp --save

Example 1:
 

javascript




// npm install --save jimp
// import jimp library to the environment
var Jimp = require('jimp');
 
// User-Defined Function to read the images
async function main() {
  const image = await Jimp.read
 
// rotate Function having a rotation as 55
  image.rotate(55)
  .write('rotate1.png');
}
 
main();
  console.log("Image Processing Completed");

Output: 
 

Example 2: With mode and cb (optional parameters)
 

javascript




// npm install --save jimp
// import jimp library to the environment
var Jimp = require('jimp');
 
// User-Defined Function to read the images
async function main() {
    const image = await Jimp.read
 
// rotate Function having rotation angle as 99, mode and callback function
    image.rotate(99, Jimp.RESIZE_BEZIER, function(err){
        if (err) throw err;
    })
        .write('rotate2.png');
}
 
main();
  console.log("Image Processing Completed");

Output: 
 

Reference: https://www.npmjs.com/package/jimp
 




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