2021年7月30日 星期五

好玩的WebVR，A-Fame一個針對3D/AR/VR所設計的網路框架

A-Frame 無需安裝任何東西，採用 HTML 文件開發，使其易於上手，用於構建虛擬實境 (VR) 體驗的網路框架。A-Frame 不僅僅是 3D 場景圖或標記語言，它的核心更是一個強大的實體組件框架。

網址：https://aframe.io/

範例一：


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<!DOCTYPE html>
<html>
  <head>
    <script src="https://aframe.io/releases/1.2.0/aframe.min.js"></script>
  </head>
  <body>
    <a-scene>
      <a-box position="-1 0.5 -3" rotation="0 45 0" color="#4CC3D9"></a-box>
      <a-sphere position="0 1.25 -5" radius="1.25" color="#EF2D5E"></a-sphere>
      <a-cylinder position="1 0.75 -3" radius="0.5" height="1.5" color="#FFC65D"></a-cylinder>
      <a-plane position="0 0 -4" rotation="-90 0 0" width="4" height="4" color="#7BC8A4"></a-plane>
      <a-sky color="#ECECEC"></a-sky>
    </a-scene>
  </body>
</html>

範例二：

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<!DOCTYPE html>
<head>
  <meta charset="utf-8">
  <title>Model Viewer AR - VR</title>
  <meta name="description" content="Model Viewer (VR / AR) • A-Frame">
  <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no" />
  <script src="https://aframe.io/releases/1.2.0/aframe.min.js"></script>
  <script src="info-message.js"></script>
  <script src="https://unpkg.com/aframe-extras@3.3.0/dist/aframe-extras.min.js"></script>
  <script src="hide-on-enter-ar.js"></script>
  <script src="ar-shadows.js"></script>
  <script src="ar-hit-test.js"></script>
  <script src="model-viewer.js"></script>
  <script src="background-gradient.js"></script>
</head>
<body>

<a-scene
  renderer="colorManagement: true;"
  info-message="htmlSrc: #messageText"
  model-viewer="gltfModel: #triceratops; title: Triceratops">
  <a-assets>
    <!--
      Model source: https://sketchfab.com/3d-models/triceratops-d16aabe33dc24f8ab37e3df50c068265
      Model author: https://sketchfab.com/VapTor
      Model license: Sketcfab Standard
    -->
    <a-asset-item id="triceratops"
      src="https://cdn.aframe.io/examples/ar/models/triceratops/scene.gltf"
      response-type="arraybuffer" crossorigin="anonymous"></a-asset-item>

    <a-asset-item id="reticle"
      src="https://cdn.aframe.io/examples/ar/models/reticle/reticle.gltf"
      response-type="arraybuffer" crossorigin="anonymous"></a-asset-item>

    <img id="shadow" src="https://cdn.glitch.com/20600112-c04b-492c-8190-8a5ccc06f37d%2Fshadow.png?v=1606338852399"></img>
    <a-asset-item id="messageText" src="message.html"></a-asset-item>
  </a-assets>
</a-scene>
</body>
</html>
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