AR/AR1.html at master · okhatib/AR · GitHub

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<head>
  <script src="https://aframe.io/releases/0.7.1/aframe.min.js"></script>
    <script src="https://rawgit.com/chenzlabs/three.ar.js/0f645a5/dist/three.ar.min.js"></script>
    <script src="https://rawgit.com/chenzlabs/aframe-ar/0cf8d5a/dist/aframe-ar.min.js"></script>
    <script src="https://cdn.rawgit.com/donmccurdy/aframe-extras/cfe5f316/dist/aframe-extras.js"></script>
    <script type="text/javascript">
      AFRAME.registerComponent('shadow-material', {
        init() {
            this.material = new THREE.ShadowMaterial();
            this.el.getOrCreateObject3D('mesh').material = this.material;
            this.material.opacity = 0.3;
        }
      });
    </script>
    <!-- Prevent touch causing flicker on iOS. -->
    <style> * { -webkit-tap-highlight-color: rgba(0,0,0,0); } </style>
</head>
<body>
  <div style="height: 100px; position: fixed; top: 0; left: 0;background-color: white;z-index: 9999;">
    <span>Distance: <p id="distance" style="color: black;"></p></span>
  </div>

  <a-scene ar>
    <a-camera ar-raycaster raycaster cursor="fuse:false"> </a-camera>
    <a-ring id="cursor" radius-inner="0.02" radius-outer="0.03"  color="teal" position="0 -0.8 -5" rotation="-90 0 0"></a-ring>

    <a-ring id="pointA" color="red" radius-inner="0.02" radius-outer="0.03" position="0 0 -0.75" rotation="-90 0 0"></a-ring>
    <a-plane id="plane" width="0.5" height="0.5" position="0 0 0" rotation="-90 0 0"
                color="white" shadow="receive: true" shadow-material></a-plane>
  </a-scene>


<script type="text/javascript">
  function onSceneLoaded() {
    const raycaster = document.querySelector('[ar-raycaster]');
    const cursor = document.querySelector('#cursor');
    const pointA = document.querySelector('#pointA');
    const distanceDiv = document.querySelector('#distance');

    let calc = false;
    let lastEvent = null;

    raycaster.addEventListener('raycaster-intersection', (event) => {
      const target = event.detail.intersections[0].point;
      cursor.setAttribute('position', target);

      if(calc) {
        const FirstPosition = pointA.object3D.position;
        const dist = FirstPosition.distanceTo(target);
        distanceDiv.innerHTML = dist.toFixed(3) + " m";
      }
    });

    raycaster.addEventListener('click', () => {
      const currentEvent = new Date().getTime();
      if (lastEvent && (currentEvent - lastEvent < 1000)) {
        return;
      }
      lastEvent = currentEvent;

      const target = raycaster.components.cursor.intersection.point;

      if(!calc) {
        pointA.object3D.visible = true;
        pointA.setAttribute('position', target);

        const plane = document.querySelector('#plane');
        plane.object3D.visible = false;

        calc = true;
      }
      else {
        calc = false

        pointA.object3D.visible = false;
      }
    });

  }
  const scene = document.querySelector('a-scene');
  scene.addEventListener('loaded', onSceneLoaded);
</script>
</body>