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OpenGL Game Development By Example

You're reading from   OpenGL Game Development By Example Design and code your own 2D and 3D games efficiently using OpenGL and C++

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Product type Paperback
Published in Mar 2016
Publisher
ISBN-13 9781783288199
Length 340 pages
Edition 1st Edition
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Authors (2):
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Robert Madsen Robert Madsen
Author Profile Icon Robert Madsen
Robert Madsen
Stephen Madsen Stephen Madsen
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Stephen Madsen
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Toc

Table of Contents (14) Chapters Close

Chapter 2. Your Point of View

Imagine that you are making a video. You've got your cell phone out, and you point it at the area that you want to shoot and press record. You're taking a video of the Grand Canyon, so you have to pan the camera around to get the whole scene in. Suddenly, a bird flies past the field of view, and you've captured the whole scene.

The preceding scenario is pretty much how games work as well. The game has a virtual camera that can be positioned and even moved around. Similarly to the video camera on your cell phone, the game camera can only see a part of the game world, so sometimes you have to move it around. Any game objects that move in front of the camera will be seen by the player.

This chapter will explain how things are rendered in the game. Rendering is the process of actually displaying images on the screen. In order to get your get your game onto the screen, you will need to have a solid understating of the following terms:

  • Coordinate...
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