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How to combine two bitmap patterns using Node Jimp Blit Function?
This NodeJS – Blit() is an inbuilt function that is used to combine two bitmap patterns. It can also be used for combining several bitmaps into one using a boolean function.
Syntax
blit(src, x, y, [srcx, srcy, srcw, srch])
Definition of blit() paramters
src – It will store the source image for blit.
x – It will take input for x to blit the image.
y – It will take input for y to blit the image.
srcx – It is an optional parameter that will take the x-position to crop the source image.
srcy – It is an optional parameter that will take the y-position to crop the source image.
srcw – It is an optional parameter that will take the width to crop the source image.
srch - It is an optional parameter that will take the height to crop the source image.
Input Image
Using Node JIMP – BLIT()
Before proceeding to use blit() functions, please check that the following statements are already executed for setting up the environment.
npm init -y // Initialising the Node environment
npm install jimp --save // Installing the jimp dependency
Create a blit.js file and copy-paste the following code snippet in it.
Use node blit.js to run the code.
Note – The method name should match with the JS file name. Only then it will be able to call the desired method.
Example
const Jimp = require('jimp') ;
async function blit() { // Function name is same as of file name
// Reading Image
const image1 = await Jimp.read
('/home/jimp/tutorials_point_img.jpg');
const image2 = await Jimp.read
('/home/jimp/tutorials_point_img.jpg');
image1.blit(image2, 100, 150)
.write('/home/jimp/blit.jpg')
}
blit(); // Calling the function here using async
console.log("Image is processed successfully");Output
Using Node JIMP – Blit() with Optional parameters
Example
const Jimp = require('jimp') ;
async function blit() {
// Reading Image
const image1 = await Jimp.read
('/home/jimp/tutorials_point_img.jpg');
const image2 = await Jimp.read
('/home/jimp/tutorials_point_img.jpg');
image1.blit(image2, 70, 100, 130, 30, 440, 80)
.write('/home/jimp/blit.jpg')
}
blit();
console.log("Image is processed successfully");Output
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