June 2013
Intermediate to advanced
346 pages
8h 42m
English
Content preview from OpenGL ES 2 for Android
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Moving to a Perspective Projection
Before we go into the matrix math behind a perspective projection, let’s examine things at a visual level. In the previous chapter, we used an orthographic projection matrix to compensate for the aspect ratio of the screen by adjusting the width and height of the area that gets transformed into normalized device coordinates.
In the following image, we visualize an orthographic projection as a cube enclosing the entire scene, representing what OpenGL will end up rendering to the viewport and what we’ll be able to see:
Figure 30, The Projected Scene shows the same scene from a different viewpoint:
Figure 30. The ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.