May 2014
Intermediate to advanced
306 pages
8h 8m
English
Content preview from WebGL HotshotBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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WebGL 3D with Perspective View
Now let's convert this 2D triangle to a 3D triangle and see some interesting modifications. A third value is added to each vertex, which is set to -2.0. Note that no position is specified for the camera and therefore, it defaults to the origin (0, 0, 0), with the camera lens pointing down the negative z axis.
Engage thrusters
We specify the vertices in 3D just as we did in 2D, using a vertices array, but now each vertex is made up of (x, y, z) values. In WebGL, negative z values are further away and the positive direction is towards the user's location. Not all 3D coordinate systems specify negative values as away from the user. Classical geometry sometimes presents the negative values as towards the user. Still, other ...
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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.