https://github.com/maptalks/colorin
a simple colors interpolate lib
https://github.com/maptalks/colorin
Last synced: about 1 year ago
JSON representation
a simple colors interpolate lib
- Host: GitHub
- URL: https://github.com/maptalks/colorin
- Owner: maptalks
- License: mit
- Created: 2022-11-27T14:15:51.000Z (over 3 years ago)
- Default Branch: main
- Last Pushed: 2024-11-01T08:11:31.000Z (over 1 year ago)
- Last Synced: 2025-03-05T19:52:20.949Z (over 1 year ago)
- Language: HTML
- Homepage:
- Size: 2.78 MB
- Stars: 3
- Watchers: 3
- Forks: 3
- Open Issues: 0
-
Metadata Files:
- Readme: readme.md
- License: LICENSE
Awesome Lists containing this project
README
# colorin
colors interpolate
## gallery
## Examples
[base](https://maptalks.github.io/colorin/test/base.html)
[pie](https://maptalks.github.io/colorin/test/pie.html)
[maptalks points](https://maptalks.github.io/colorin/test/mtk-points.html)
[maptalks lines](https://maptalks.github.io/colorin/test/mtk-lines.html)
[maptalks polygons](https://maptalks.github.io/colorin/test/mtk-polygons.html)
[zoom stops](https://maptalks.github.io/colorin/test/zoomstop.html)
[custom imagedata size](https://maptalks.github.io/colorin/test/customsize.html)
[covid-19 usa](https://maptalks.github.io/colorin/test/covid-19.html)
[echarts-bar](https://maptalks.github.io/colorin/test/echarts-bar.html)
[echarts-calendar](https://maptalks.github.io/colorin/test/echarts-calendar.html)
maptalks.js already has this feature built-in
[maptalks funtion-type demo](https://maptalks.org/examples/en/style/color-interpolate/#style_color-interpolate)
## Install
* CDN
```html
```
* NPM
```sh
npm i colorin
# or
yarn add colorin
```
### Warning
in nodejs, you need dynamic registerCanvas,you can use [@napi-rs/canvas](https://github.com/Brooooooklyn/canvas) or [node-canvas](https://github.com/Automattic/node-canvas)
```sh
npm i @napi-rs/canvas
# or
yarn add @napi-rs/canvas
```
```js
const {
ColorIn,
registerCanvas
} = require('colorin');
const {
createCanvas
} = require('@napi-rs/canvas');
const canvas = createCanvas(1, 1);
registerCanvas(canvas);
```
## API
### `ColorIn` class
#### constructor(colors, [options])
+ colors `Color collection`
```js
import {
ColorIn
} from 'colorin';
const colors = [
[0, '#226412'],
[2, '#4C931B'],
[4, '#80BD3F'],
[6, '#B9E287'],
[8, '#E7F5D1'],
[10, '#F7F7F7'],
[13, '#226412'],
[16, '#80BD3F'],
[18, '#F1B7DB'],
[22, '#DF78AF'],
[24, '#C6147E'],
[26, '#8F0051']
];
const ci = new ColorIn(colors);
const [r, g, b, a] = ci.getColor(11);
//if you use cdn
const ci = new colorin.ColorIn(colors);
```
#### method
+ getColor(stop) `get color by stop`
```js
const [r, g, b, a] = ci.getColor(11);
```
+ getImageData() `get canvas image data`
```js
const imgData = ci.getImageData();
```