March 2017
Intermediate to advanced
480 pages
11h 3m
English
Content preview from Game Physics CookbookBecome 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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Picking
Picking objects in 3D space is a common problem. If you want your 3D simulation to interact with a mouse, we need to solve this problem. To implement picking, we need to find the pixel that the user has clicked relative to both the near and far planes of the camera. We can construct a ray from the point on the near plane to the point on the far plane. Finally, we can query the world using this ray.
The job of a graphics pipeline is to take a 3D point in world space and project it onto the screen. This transformation from world space to screen space is called Projection. To find the 3D world space position of a point based on the 2D pixel position of that same point we need to do the opposite of what the graphics pipeline does. Putting a ...
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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.