create 3d lights for use with stack.gl
npm install gl-light[![NPM version][npm-image]][npm-url]
![experimental][experimental-image]
[![js-standard-style][standard-image]][standard-url]
Create 3d lights for use with stack.gl.
``
npm install gl-light
Define data for your light
`javascript`
var data = {
position: [0, 10, 20, 1]
}
Then create it
`javascript`
var light = require('gl-light')(data)
#### light = require('gl-light')(data)
Create a light by providing data.
The following properties on data are required:position
- a 3 or 4 vector with the position, with the fourth element specifying point or directional light, default [0, 0, 0, 1]
The fourth element of position specifies a point (1) or directional (0) light. If a 3 vector is passed, the fourth element will be set to 1.
#### light.attributes
All derived attributes are stored on light.attributes, and include:position
- a 4 vector with the position in homogenous coordinates
#### light.position([x, y, z, [w]])`
Update the position. If a 3 vector is passed, the fourth element will be kept the same.
[npm-image]: https://img.shields.io/badge/npm-v1.0.0-lightgray.svg?style=flat-square
[npm-url]: https://npmjs.org/package/gl-light
[standard-image]: https://img.shields.io/badge/code%20style-standard-lightgray.svg?style=flat-square
[standard-url]: https://github.com/feross/standard
[experimental-image]: https://img.shields.io/badge/stability-experimental-lightgray.svg?style=flat-square