<script src="https://aframe.io/releases/0.8.0/aframe.min.js"></script> <script src="https://cdn.rawgit.com/jeromeetienne/AR.js/1.5.0/aframe/build/aframe-ar.js ...
pointA: { type: "vec2", default: {x:0, y:0} }, pointB: { type: "vec2", default: {x:4, y:0} }, ...