Skip to content

Latest commit

 

History

History

ramp

Folders and files

NameName
Last commit message
Last commit date

parent directory

..
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

ramp

npm version npm downloads Twitter Follow

This project is part of the @thi.ng/umbrella monorepo.

About

Parametric interpolated 1D lookup tables for remapping values.

Status

STABLE - used in production

Search or submit any issues for this package

Installation

yarn add @thi.ng/ramp

ES module import:

<script type="module" src="https://cdn.skypack.dev/@thi.ng/ramp"></script>

Skypack documentation

For Node.js REPL:

# with flag only for < v16
node --experimental-repl-await

> const ramp = await import("@thi.ng/ramp");

Package sizes (gzipped, pre-treeshake): ESM: 1.02 KB

Dependencies

Usage examples

Several demos in this repo's /examples directory are using this package.

A selection:

Screenshot Description Live demo Source
Unison wavetable synth with waveform editor Demo Source

API

Generated API docs

import { linear, hermite } from "@thi.ng/ramp";

const rampL = linear([[0.1, 0], [0.5, 1], [0.9, 0]]);
const rampH = hermite([[0.1, 0], [0.5, 1], [0.9, 0]]);

for(let i = 0; i <= 10; i++) {
    console.log(
        i / 10,
        rampL.at(i / 10).toFixed(2),
        rampH.at(i / 10).toFixed(2)
    );
}

// 0   0.00 0.00
// 0.1 0.00 0.00
// 0.2 0.25 0.16
// 0.3 0.50 0.50
// 0.4 0.75 0.84
// 0.5 1.00 1.00
// 0.6 0.75 0.84
// 0.7 0.50 0.50
// 0.8 0.25 0.16
// 0.9 0.00 0.00
// 1   0.00 0.00

Authors

Karsten Schmidt

If this project contributes to an academic publication, please cite it as:

@misc{thing-ramp,
  title = "@thi.ng/ramp",
  author = "Karsten Schmidt",
  note = "https://thi.ng/ramp",
  year = 2019
}

License

© 2019 - 2021 Karsten Schmidt // Apache Software License 2.0