https://github.com/mikolalysenko/box-frustum

A function to test if an axis aligned bounding box interesects the camera frustum.
https://github.com/mikolalysenko/box-frustum

Last synced: about 2 months ago
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A function to test if an axis aligned bounding box interesects the camera frustum.

• Host: GitHub
• URL: https://github.com/mikolalysenko/box-frustum
• Owner: mikolalysenko
• Created: 2013-02-09T19:47:07.000Z (almost 12 years ago)
• Default Branch: master
• Last Pushed: 2013-02-09T20:20:43.000Z (almost 12 years ago)
• Last Synced: 2024-10-20T14:28:03.160Z (2 months ago)
• Language: JavaScript
• Size: 109 KB
• Stars: 10
• Watchers: 4
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
box-frustum

===========

A function to test if an axis aligned bounding box interesects the camera frustum.

Usage/Installation

==================

First, pull this in via npm:

    npm install box-frustum

    

Then you can do a frustum test like this:

    require("box-frustum")(

      [1, 0, 0, 0,

       0, 1, 0, 0,

       0, 0, 1, 0,

       0, 0, 0, 1],

      [[-1,-1,-1], [1,1,1]])

      

Which will check if axis-aligned bounding box from (-1,-1,-1) to (1,1,1) intersects the frustum for the unit matrix.

`require("box-frustum")(m, box)`

--------------------------------

module.exports implements the frustum test. It takes two arguments:

* `m` is an array of 16 float values representing the homogeneous clip coordinate matrix for the camera in row major order.

* `box = [lo, hi]` is an array of two length 3 arrays giving the bounds for the axis aligned bounding.

Results: true if the box intersects the camera frustum, flase otherwise.

Credits

=======

(c) 2013 Mikola Lysenko. BSD