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Canvas Cookbook

You're reading from   Canvas Cookbook Over 80 simple but creative and structured recipes to explore the capabilities of HTML5 Canvas

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Product type Paperback
Published in May 2019
Publisher
ISBN-13 9781785284892
Length 254 pages
Edition 1st Edition
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Concepts
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Toc

Table of Contents (11) Chapters Close

Preface 1. Paths and Text 2. Shapes and Composites FREE CHAPTER 3. Animation 4. Images and Videos 5. Interactivity through Events 6. Creating Graphs and Charts 7. 3D Modeling 8. Game Development 9. Interoperability and Deployment Index

Rendering 3D objects


Before we begin with our first recipe, let me introduce two methods that are very important in rendering a 3D object on a canvas. One is WebGLRenderer() and the second is CanvasRenderer(). The latter renders a scene on the canvas using Canvas 2D Context, and the former does the same using WebGL. Performance-wise, WebGL is better than CanvasRenderer. WebGL is, however, device dependent.

The first recipe is a simple display of rotating objects and the output is as follows:

How to do it…

The recipe is as follows:

The HTML code:

<html>
<head>
<title>Rotating Shapes</title>
<script src="../threeLib/build/three.min.js"></script>
<script src="rotatingshapes.js">
</script>
</head>
<body onload="init()">
  <center>
  <canvas width="400" height="400" id="MyCanvasArea" style="border:2px solid blue;">
    Canvas tag is not supported by your browser
  </canvas>
  <h1>3D rotating objects using three.js...
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