Package Exports

@jimp/plugin-color

This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (@jimp/plugin-color) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.

Readme

@jimp/plugin-blit

Jimp color methods.

Bitmap manipulation to adjust the color in an image.

color

Apply multiple color modification rules

@param {array} actions list of color modification rules, in following format: { apply: '', params: [ ] }
@param {function(Error, Jimp)} cb (optional) a callback for when complete

import jimp from 'jimp';

async function main() {
  const image = await jimp.read('test/image.png');

  image.color([{ apply: 'red', params: [100] }]);
}

main();

brightness

Adjusts the brightness of the image

@param {number} val the amount to adjust the brightness, a number between -1 and +1
@param {function(Error, Jimp)} cb (optional) a callback for when complete

import jimp from 'jimp';

async function main() {
  const image = await jimp.read('test/image.png');

  image.brightness(20);
}

main();

contrast

Adjusts the contrast of the image

@param {number} val the amount to adjust the contrast, a number between -1 and +1
@param {function(Error, Jimp)} cb (optional) a callback for when complete

import jimp from 'jimp';

async function main() {
  const image = await jimp.read('test/image.png');

  image.contrast(70);
}

main();

posterize

Apply a posterize effect

@param {number} n the amount to adjust the contrast, minimum threshold is two
@param {function(Error, Jimp)} cb (optional) a callback for when complete

import jimp from 'jimp';

async function main() {
  const image = await jimp.read('test/image.png');

  image.posterize(5);
}

main();

opacity

Multiplies the opacity of each pixel by a factor between 0 and 1

@param {number} f A number, the factor by which to multiply the opacity of each pixel
@param {function(Error, Jimp)} cb (optional) a callback for when complete

import jimp from 'jimp';

async function main() {
  const image = await jimp.read('test/image.png');

  image.opacity(80);
}

main();

sepia

Applies a sepia tone to the image

@param {function(Error, Jimp)} cb (optional) a callback for when complete

import jimp from 'jimp';

async function main() {
  const image = await jimp.read('test/image.png');

  image.sepia();
}

main();

fade

Fades each pixel by a factor between 0 and 1

@param {number} f A number from 0 to 1. 0 will haven no effect. 1 will turn the image completely transparent.
@param {function(Error, Jimp)} cb (optional) a callback for when complete

import jimp from 'jimp';

async function main() {
  const image = await jimp.read('test/image.png');

  image.fade(0.7);
}

main();

convolution

Adds each element of the image to its local neighbors, weighted by the kernel

@param {array} kernel a matrix to weight the neighbors sum
@param {string} edgeHandling (optional) define how to sum pixels from outside the border
@param {function(Error, Jimp)} cb (optional) a callback for when complete

import jimp from 'jimp';

async function main() {
  const image = await jimp.read('test/image.png');

  // make me better
  image.convolution(weights);
}

main();

opaque

Set the alpha channel on every pixel to fully opaque

@param {function(Error, Jimp)} cb (optional) a callback for when complete

import jimp from 'jimp';

async function main() {
  const image = await jimp.read('test/image.png');

  image.opaque();
}

main();

pixelate

Pixelates the image or a region

@param {number} size the size of the pixels
@param {number} x (optional) the x position of the region to pixelate
@param {number} y (optional) the y position of the region to pixelate
@param {number} w (optional) the width of the region to pixelate
@param {number} h (optional) the height of the region to pixelate
@param {function(Error, Jimp)} cb (optional) a callback for when complete

import jimp from 'jimp';

async function main() {
  const image = await jimp.read('test/image.png');

  image.pixelate(10);
}

main();

convolute

Applies a convolution kernel to the image or a region

@param {array} kernel the convolution kernel
@param {number} x (optional) the x position of the region to apply convolution to
@param {number} y (optional) the y position of the region to apply convolution to
@param {number} w (optional) the width of the region to apply convolution to
@param {number} h (optional) the height of the region to apply convolution to
@param {function(Error, Jimp)} cb (optional) a callback for when complete

import jimp from 'jimp';

async function main() {
  const image = await jimp.read('test/image.png');

  // make me better
  image.pixelate(kernal);
}

main();