https://github.com/stackgl/lookat-camera

Simple "lookat" camera abstraction built on top of gl-matrix
https://github.com/stackgl/lookat-camera

Last synced: 12 months ago
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Simple "lookat" camera abstraction built on top of gl-matrix

• Host: GitHub
• URL: https://github.com/stackgl/lookat-camera
• Owner: stackgl
• License: other
• Created: 2015-06-16T17:34:15.000Z (about 11 years ago)
• Default Branch: master
• Last Pushed: 2015-06-16T17:34:22.000Z (about 11 years ago)
• Last Synced: 2025-06-03T02:05:45.757Z (about 1 year ago)
• Language: JavaScript
• Homepage: http://stack.gl/lookat-camera/
• Size: 207 KB
• Stars: 10
• Watchers: 16
• Forks: 2
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE.md

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README

          
# lookat-camera

[![stable](http://badges.github.io/stability-badges/dist/stable.svg)](http://github.com/badges/stability-badges)

Simple "lookat" camera abstraction built on top of

[gl-matrix](http://github.com/toji/gl-matrix).

## Usage

[![NPM](https://nodei.co/npm/lookat-camera.png)](https://nodei.co/npm/lookat-camera/)

See [demo.js](./demo.js) for a usage example.

### `camera = require('lookat-camera')()`

Creates a new camera instance.

### `view = camera.view([view])`

Updates the view matrix based on the camera's current configuration and

returns the result. Optionally, you may pass in your own `view` array to

modify directly.

### `camera.position`

`[x, y, z]` vector that determines the position of the camera in world space.

### `camera.target`

`[x, y, z]` vector that determines the target of the camera in world space.

### `camera.up`

Normalized `[x, y, z]` vector that determines the up direction of the camera.

Generally you'll want this to be `[1, 0, 0]`, `[0, 1, 0]` or `[0, 0, 1]`.

## Contributing

See [stackgl/contributing](https://github.com/stackgl/contributing) for details.

## License

MIT. See [LICENSE.md](http://github.com/stackgl/lookat-camera/blob/master/LICENSE.md) for details.