https://github.com/patrick-s-young/react-three-cannon-hinge-constraint

Demo of @react-three/cannon's useHingeConstraint physics hook
https://github.com/patrick-s-young/react-three-cannon-hinge-constraint

leva physics-simulation react-three-cannon react-three-fiber threejs zustand

Last synced: about 2 months ago
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Demo of @react-three/cannon's useHingeConstraint physics hook

• Host: GitHub
• URL: https://github.com/patrick-s-young/react-three-cannon-hinge-constraint
• Owner: patrick-s-young
• Created: 2022-08-06T19:50:51.000Z (over 2 years ago)
• Default Branch: main
• Last Pushed: 2022-08-06T20:55:19.000Z (over 2 years ago)
• Last Synced: 2023-03-04T10:04:19.330Z (almost 2 years ago)
• Topics: leva, physics-simulation, react-three-cannon, react-three-fiber, threejs, zustand
• Language: JavaScript
• Homepage:
• Size: 288 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

Awesome Lists containing this project

README

        
# Hinge Constraint With Cannon Hooks  

In this [@react-three/fiber](https://www.npmjs.com/package/@react-three/fiber) example, I leveraged [use-cannons](https://github.com/pmndrs/use-cannon)'s useHingeConstraint to create a collections of 'paddles' that can be set to

rotate clockwise/counterclockwise at varying speeds. 

With the hooks version of useHingeContraint, a ref is returned for accessing the api:

```

const [, , hingeApi] = useHingeConstraint(doorRef, doorFrameRef, {

 collideConnected: false,

 axisA: [0, 1, 0],

   axisB: [0, 1, 0],

   pivotA: [-1.05, 0, 0],

   pivotB: [0, 0, 0]

 }

);

```

Then wrap the api in a useEffect with the speed state variable as a depency:

```

useEffect(() => {

 hingeApi.setMotorSpeed(speed)

}, [speed]);

```

![use-cannon-hinge-constraint_24fps](https://user-images.githubusercontent.com/42591798/183264955-0e765437-d773-4ae3-ac4d-082d63202f57.gif)

The slider was enabled by [leva](https://github.com/pmndrs/leva), a hook-based GUI library, and [zustand](https://www.npmjs.com/package/zustand), a state management solution. Both are brought to you by [Poimandres](https://pmnd.rs/).

## View In Sandbox

[codesandbox.io/s/rgccxz](https://codesandbox.io/s/rgccxz)

## Running Locally

Make sure you have [Node.js](http://nodejs.org/) installed.

```sh

git clone https://github.com/patrick-s-young/react-three-cannon-hinge-constraint.git # or clone your own fork

cd react-three-cannon-hinge-constraint

npm install

npm start

```

## Built With

* [@react-three/fiber](https://www.npmjs.com/package/@react-three/fiber) - React renderer for three.js.

* [@react-three/cannon](https://www.npmjs.com/package/@react-three/cannon) - React hooks for cannon-es, a rigid body physics engine.

* [zustand](https://www.npmjs.com/package/zustand) - state-management solution that uses simplified flux principles.

* [leva](https://github.com/pmndrs/leva) - hook-based GUI library.

* [@react-three/drei](https://www.npmjs.com/package/@react-three/drei) - Helper library for @react-three/fiber.

## Author

* **Patrick Young** - [Patrick Young](https://github.com/patrick-s-young)

## License

This project is licensed under the MIT License - see the [LICENSE](LICENSE) file for details.