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Real-Time 3D Graphics with WebGL 2

You're reading from   Real-Time 3D Graphics with WebGL 2 Build interactive 3D applications with JavaScript and WebGL 2 (OpenGL ES 3.0)

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Product type Paperback
Published in Oct 2018
Publisher Packt
ISBN-13 9781788629690
Length 500 pages
Edition 2nd Edition
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Authors (2):
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Farhad Ghayour Farhad Ghayour
Author Profile Icon Farhad Ghayour
Farhad Ghayour
Diego Cantor Diego Cantor
Author Profile Icon Diego Cantor
Diego Cantor
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Table of Contents (14) Chapters Close

Preface 1. Getting Started FREE CHAPTER 2. Rendering 3. Lights 4. Cameras 5. Animations 6. Colors, Depth Testing, and Alpha Blending 7. Textures 8. Picking 9. Putting It All Together 10. Advanced Techniques 11. WebGL 2 Highlights 12. Journey Ahead 13. Other Books You May Enjoy

Time for Action: Unique Object Labels

This section is divided into two parts. In the first part, you will develop code to generate a random scene with cones and cylinders. Each object will be assigned a unique object label that will be used for coloring the object in the offscreen renderbuffer. In the second part, we will configure the picker to work with unique labels. Let's get started:

  1. Open the ch08_02_picking-initial.html file in your browser. This is a scene that is only showing the floor object. We are going to create a scene that contains multiple objects that can be either balls or cylinders.
  2. Open ch08_02_picking-initial.html in a source code editor.
  3. We will write code so that each object in the scene can have the following:
    • A position assigned randomly
    • A unique object label color
    • A non-unique diffuse color
    • A scale factor that will determine the size of the object...
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