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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

The Model-View Matrix

The Model-View matrix allows us to perform affine transformations in our scene. Affine is a mathematical name that describes transformations that do not change the structure of the object undergoing such transformations. In our 3D world scene, such transformations are rotation, scaling, reflection shearing, and translation. Fortunately, we do not need to understand how to represent such transformations with matrices. We just need to use one of the many JavaScript matrix libraries that are available online (such as glMatrix).

Affine Transformations

You can find more information on how transformation matrices work at https://en.wikipedia.org/wiki/Affine_transformation.

Understanding the structure of the Model-View matrix will not help you if you just want to apply transformations to the scene or to objects in the scene. For that effect, simply use a library...

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