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A component for creating borders in VR

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Browser Usage

Live Example

Here are some live examples of the component. The simpler demo is ideal for mobile.

Demo notes:

  • Works fine in Chrome on a Mac
  • Having issues with player falling through floor on iOS for complex demos (keep it simple on mobile)
  • On Windows 10 machine (Lenovo Yoga 710 laptop) can't seem to walk and turn at the same time

HTML Example

Run this example in a browser (you'll need to add your own image files or get them from my repo). Step off the birds-eye view platform and wander around.

<!DOCTYPE html>
    <meta charset="utf-8">
    <title>simple aframe-border-component example</title>
    <meta name="description" content="aframe-border-component example">
    <script src=""></script>
    <script src="//"></script>
    <script src=""></script> 
    <script src=""></script> 
    <script src=""></script>   
  <a-scene stats-in-vr physics="debug: true;">
    <img id="texture-wall" src="img/arrow-left.png">
    <img id="texture-wall-blue" src="img/arrow-left-blue.png">
    <img id="texture-wall-red" src="img/arrow-left-red.png">
    <a-box id="rail" 
      static-body color="red" 
      depth="1" width="100" height="1"></a-box>
    <a-box id="wall-one" 
      static-body material="src: #texture-wall" 
      depth="1" width="4" height="1"></a-box>
    <a-box id="wall-one-spoke" 
      static-body material="src: #texture-wall" 
      rotation="0 90 0"
      depth="1" width="4" height="1"></a-box>
    <a-box id="wall-one-long" 
      static-body material="src: #texture-wall" 
      depth="1" width="20" height="1"></a-box>
    <a-box id="wall-one-blue" 
      static-body material="src: #texture-wall-blue" 
      depth="1" width="6" height="1"></a-box>
    <a-box id="wall-one-red" 
      static-body material="src: #texture-wall-red" 
      depth="1" width="7" height="1"></a-box>
  <a-sky id="sky" color="#0000ff"></a-sky>
  <a-box id="center" 
      position="0 0 0"
      depth="0.5" width="0.5" height="10"></a-box>
  <a-entity id="player"
      position="0 10.8 20">
  <!-- birds-eye view box to stand on -->
  <a-box static-body 
      depth="0.25" height="0.5" width="0.5" 
      position="0 9.8 20"

  <!-- outside border -->
  <a-entity id="arena" 
      border='sides: 4; radius: 25; wall: #rail;' 
      position='0 0.5 0'
      rotation='0 0 0'></a-entity>

  <!-- green interior -->
  <a-entity id="border1A" 
      border='sides: 3; radius: 6; wall: #wall-one;' 
      position='0 0.5 0'
      rotation='0 0 0'></a-entity>
  <a-entity id="border1B" 
      border='sides: 3; radius: 1; wall: #wall-one-spoke;' 
      position='0 0.5 0'
      rotation='0 0 0'></a-entity>

  <!-- blue ring -->
  <a-entity id="border2C" 
      border='sides: 10; radius: 15; wall: #wall-one-blue; open: 0 5;' 
      position='0 0.5 0'
      rotation='0 0 0'></a-entity>

  <a-grid id="ground" width="50" height="50" static-body color="#444444"></a-grid>


Include Script

Include the latest script. Update the @version in the URL as needed:

<script src=""></script>

Define Assets

Create an a-assets section and add the following:

  • an img to act as a material for the border
  • an entity, like a-box, a-cylinder or a-sphere, to act as a border

Be sure to give each entity unique id attributes. They will be needed to define the border.

The example below uses the static-body component from aframe-extras so the player can not go through the borders.

  <img id="texture-wall" src="img/arrow-left.png">
  <a-box id="wall-one" 
    static-body material="src: #texture-wall" 
    depth="1" width="4" height="1"></a-box>

You can also set the rotation for an asset. It will rotate relative to it's position and rotation along the border.

Create an Entity with a Border Component

A border component can consist of the following:

  • sides - the number of sides to create for the border (sides: 6;)
  • radius - the distance from the parent entity to create each border wall (radius: 10;)
  • wall - the id of the entity asset that will be used to create walls of the border (wall: #wall-one;)
  • open - a zero-based list of border walls that can be opened (not drawn) to allow entering and exiting (open: 0 2;)

Example border with no open walls:

<a-entity id="b4" 
  border='sides: 4; radius: 5; wall: #wall-one;' 
  position='0 0.5 0'></a-entity>

A border with open walls:

<a-entity id="b1" 
  border='sides: 5; radius: 6; wall: #wall-one; open: 0 2;' 
  position='0 0.5 0'></a-entity>

Adding / Removing Through JavaScript

An example of how to remove and add border attributes though JavaScript. The target element should be an a-entity.

    // how to remove / add a border attribute through JavaScript
      "border","sides: 4; radius: 5; wall: #wall-one-blue; open: 0 2;");

NPM Installation

$ npm init
$ npm install aframe-border-component --save

Browserify Example

Below is an example of requiring the module within a file to be passed to browserify.

The modules named export, Component, should be passed to AFRAME.aframeCore.registerComponent:

// Browser distribution of the A-Frame component.
(function () {
  if (typeof AFRAME === 'undefined') {
    console.error('Component attempted to register before AFRAME was available.');

  var border = require('aframe-border-component');

  // Register all components here.
  var components = {
    "border": border.Component

  var primitives = {

  Object.keys(components).forEach(function (name) {
    if (AFRAME.aframeCore) {
      AFRAME.aframeCore.registerComponent(name, components[name]);
    } else {
      AFRAME.registerComponent(name, components[name]);

  Object.keys(primitives).forEach(function (name) {
    if (AFRAME.aframeCore) {
      AFRAME.aframeCore.registerPrimitive(name, primitives[name]);
    } else {
      AFRAME.registerPrimitive(name, primitives[name]);


Build with grunt

Use a grunt task to build the distribution file:

browserify: {
    dist: {
        options: {
            browserifyOptions: {
                // ...
            transform: [['babelify', {presets: ['es2015']}]],
                plugin: [[ "browserify-derequire" ]]
        files: {
           // substitute your component name for the distribution file
           "./dist/YOUR-COMPONENT.js": ["./browser.js"]

For more information, review the Gruntfile.js and package.json files in the root of this projects source code.


To test, go to the root folder and type (sans $):

$ npm test



In lieu of a formal style guide, take care to maintain the existing coding style. Add unit tests for any new or changed functionality. Lint and test your code.

Version History

Version 0.1.6

  • updated doc to point to demos in their new location on bitbucket

Version 0.1.5

  • brought code coverage up to 100%

Version 0.1.4

  • added logging of name and version to console
  • integrated travis-ci and codecov

Version 0.1.3

  • code cleanup
  • added MIT license
  • updated examples to latest CDN

Version 0.1.2

  • fixed / updated documentation

Version 0.1.1

  • added cdn example

Version 0.1.0

  • initial release