The flip() function is an inbuilt function in Nodejs | Jimp which flips the image horizontally or vertically. The default settings are to flip the image horizontally.
Syntax:
flip(h, v, cb)
Parameter:
- h: This parameter takes a boolean value, if true the image will be flipped horizontally.
- v: This parameter takes a boolean value, if true the image will be flipped vertically.
- cb: This is an optional parameter that is invoked when compilation is complete.
Input Images:
Setup Environment:
npm init -y
Install Dependencies:
npm install jimp
Example 1: In this example, we will flip the image.
javascript
// npm install --save jimp // import jimp library to the environment const Jimp = require( 'jimp' );
// User-Defined Function to read the images async function main() {
const image = await Jimp.read(
// flip function also known as mirror function
image.flip( true , false )
.write( 'flip1.png' );
} main(); console.log( "Image Processing Completed" );
|
Output:
Example 2: With h, v, and cb (optional parameters)
javascript
// npm install --save jimp // import jimp library to the environment const Jimp = require( 'jimp' );
// User-Defined Function to read the images async function main() {
const image = await Jimp.read(
// flip function using callback function
image.flip( true , true , function (err) {
if (err) throw err;
})
.write( 'flip2.png' );
} main(); console.log( "Image Processing Completed" );
|
Output:
Reference: https://www.npmjs.com/package/jimp