---
layout: default
title: JavaScript Utilities
parent: MediaPipe in JavaScript
nav_order: 1
---
# JavaScript Utils for MediaPipe
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1. TOC
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## Utilities
MediaPipe offers utilities for enabling users to use the MediaPipe Examples with ease, and conveniently integrate with existing code.
The utilities MediaPipe currently has are ~
* [Drawing Utilities][draw-npm],
* [Camera Utilities][cam-npm], and
* [Control Panel][ctrl-npm] Utilities.
### Drawing Utilities
These are for drawing on canvas using output from MediaPipe's solutions.
Currently, this includes three functions ~
1. *drawLandmarks*
```js
drawLandmarks(canvasContext, landmarks, {
fillColor: fillColor,
color: color,
lineWidth: lineWidth
}
```
This function is for drawing landmarks.
The value for the `landmarks` parameter can be found using in the `results` array.
2. *drawConnectors*
```js
drawConnectors(canvasContext, landmarks, LANDMARK_CONSTANTS, {
color: color,
lineWidth: lineWidth
})
```
This is a function used for plotting connectors in various MediaPipe Solutions.
The `LANDMARK_CONSTANTS` are specific for every solution, so you could choose these there.
3. *drawRectangle*
```js
drawRectangle(canvasContext, {
width: width,
height: height,
xCenter: xCenter,
yCenter: yCenter,
rotation: rotation
}, {
color: color
})
```
This allows drawing of a rectangle, with a certain width, height and rotation given the coordinates of its location.
The quickest way to get acclimated is to look at the examples above. Each demo
has a link to a [CodePen][codepen] so that you can edit the code and try it
yourself. We have included a number of utility packages to help you get started:
* [@mediapipe/drawing_utils][draw-npm] - Utilities to draw landmarks and
connectors.
* [@mediapipe/camera_utils][cam-npm] - Utilities to operate the camera.
* [@mediapipe/control_utils][ctrl-npm] - Utilities to show sliders and FPS
widgets.
Note: See these demos and more at [MediaPipe on CodePen][codepen]
All of these solutions are staged in [NPM][npm]. You can install any package
locally with `npm install`. Example:
```
npm install @mediapipe/holistic.
```
If you would rather not stage these locally, you can rely on a CDN (e.g.,
[jsDelivr](https://www.jsdelivr.com/)). This will allow you to add scripts
directly to your HTML:
```
```
Note: You can specify version numbers to both NPM and jsdelivr. They are
structured as `..`. To prevent breaking changes from
affecting your work, restrict your request to a `` number. e.g.,
`@mediapipe/holistic@0.1`.
[Ho-pg]: ../solutions/holistic#javascript-solution-api
[F-pg]: ../solutions/face_mesh#javascript-solution-api
[H-pg]: ../solutions/hands#javascript-solution-api
[P-pg]: ../solutions/pose#javascript-solution-api
[Ho-npm]: https://www.npmjs.com/package/@mediapipe/holistic
[F-npm]: https://www.npmjs.com/package/@mediapipe/face_mesh
[H-npm]: https://www.npmjs.com/package/@mediapipe/hands
[P-npm]: https://www.npmjs.com/package/@mediapipe/pose
[draw-npm]: https://www.npmjs.com/package/@mediapipe/pose
[cam-npm]: https://www.npmjs.com/package/@mediapipe/pose
[ctrl-npm]: https://www.npmjs.com/package/@mediapipe/pose
[Ho-jsd]: https://www.jsdelivr.com/package/npm/@mediapipe/holistic
[F-jsd]: https://www.jsdelivr.com/package/npm/@mediapipe/face_mesh
[H-jsd]: https://www.jsdelivr.com/package/npm/@mediapipe/hands
[P-jsd]: https://www.jsdelivr.com/package/npm/@mediapipe/pose
[Ho-pen]: https://code.mediapipe.dev/codepen/holistic
[F-pen]: https://code.mediapipe.dev/codepen/face_mesh
[H-pen]: https://code.mediapipe.dev/codepen/hands
[P-pen]: https://code.mediapipe.dev/codepen/pose
[Ho-demo]: https://mediapipe.dev/demo/holistic
[F-demo]: https://mediapipe.dev/demo/face_mesh
[H-demo]: https://mediapipe.dev/demo/hands
[P-demo]: https://mediapipe.dev/demo/pose
[npm]: https://www.npmjs.com/package/@mediapipe
[codepen]: https://code.mediapipe.dev/codepen