June 2013
Intermediate to advanced
346 pages
8h 42m
English
Content preview from OpenGL ES 2 for Android
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The Math Behind Orthographic Projections
We’ll start off with orthographic projections, as they’re easier to understand. An orthographic projection maps part of our 3D world onto the screen, and it does so in a way such that everything appears the same size, no matter how near or far it is. For this reason, this type of projection is great for doing 2D games and art.
Creating an Identity Orthographic Projection
The following is a basic definition of an orthographic projection matrix:
Given this matrix, all coordinates between left and right, bottom and top, and near and far will be mapped into normalized device coordinates, and anything within this ...
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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.