https://github.com/jzecca/color-curve-adjust

Performs a Photoshop/GIMP curve adjustment on a RGB color
https://github.com/jzecca/color-curve-adjust

color curve gimp npm-package photoshop

Last synced: 5 months ago
JSON representation

Performs a Photoshop/GIMP curve adjustment on a RGB color

• Host: GitHub
• URL: https://github.com/jzecca/color-curve-adjust
• Owner: jzecca
• License: mit
• Created: 2019-06-11T13:39:18.000Z (about 7 years ago)
• Default Branch: master
• Last Pushed: 2021-10-20T22:29:06.000Z (over 4 years ago)
• Last Synced: 2025-09-26T05:58:17.695Z (9 months ago)
• Topics: color, curve, gimp, npm-package, photoshop
• Language: TypeScript
• Homepage:
• Size: 124 KB
• Stars: 10
• Watchers: 1
• Forks: 0
• Open Issues: 2
• Metadata Files:
  • Readme: README.md

Awesome Lists containing this project

README

          
# color-curve-adjust

[![Build Status](https://img.shields.io/github/workflow/status/jzecca/color-curve-adjust/CI?logo=github&style=flat-square)](https://github.com/jzecca/color-curve-adjust/actions/workflows/ci.yaml)

[![Coverage](https://img.shields.io/codecov/c/gh/jzecca/color-curve-adjust?logo=codecov&style=flat-square)](https://codecov.io/gh/jzecca/color-curve-adjust)

> Performs a Photoshop/GIMP curve adjustment on a RGB color

Based on [CSPL.js](https://github.com/kuckir/CSPL.js).

Read more about the algorithm [here](http://blog.ivank.net/interpolation-with-cubic-splines.html).

## Install

```

$ npm install color-curve-adjust

```

## Usage

- Edit your curve in Photoshop

    ![Photoshop curve](example.png)

- Create an array of each point of the curve

    ```ts

    const curve = [

        { x: 0, y: 85 },

        { x: 50, y: 120 },

        { x: 140, y: 200 },

        { x: 190, y: 225 },

        { x: 255, y: 255 },

    ];

    ```

- Import the module and call it with a color and your array

    ```ts

    import curveAdjust from 'color-curve-adjust';

    curveAdjust('#5a2149', curve);

    //=> '#9d6b8d'

    curveAdjust('#5a2149', curve, 'r');   // adjust only the red channel

    //=> '#9d2149'

  

    curveAdjust('#5a2149', curve, 'gb');  // adjust only green & blue channels

    //=> '#5a6b8d'

    ```

## License

MIT © [Jérôme Zecca](https://zed-k.com)