Node Jimp | fade
Introduction
The fade() function is an inbuilt function in Nodejs | Jimp which fades each pixel by a factor between 0 and 1.
Syntax:
fade(f, cb)
Parameter:
- f – This parameter stores the value by which image is made transparent. It has a range of 0 to 1. 1 will turn the image completely transparent.
- 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 environmentvar Jimp = require('jimp');// User-Defined Function to read the imagesasync function main() { const image = await Jimp.read// fade function image.fade(.5) .write('fade1.png');}main(); console.log("Image Processing Completed"); |
Output:
Example 2: With f and cb (optional parameters)
javascript
// npm install --save jimp// import jimp library to the environmentvar Jimp = require('jimp');// User-Defined Function to read the imagesasync function main() { const image = await Jimp.read// fade function using callback function image.fade(0.8, function(err){ if (err) throw err; }) .write('fade2.png');}main(); console.log("Image Processing Completed"); |
Output:
Reference: https://www.npmjs.com/package/jimp
