March 2017
Intermediate to advanced
480 pages
11h 3m
English
Content preview from Game Physics Cookbook
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Raycast Axis Aligned Bounding Box
Any ray that intersects an AABB will do so twice. The first intersection is where the ray enters the AABB; the second is where the ray exists. If we know both intersection points, the point closest to the origin of the ray is the intersection point.
We can simplify finding the intersections points by visualizing the problem top down. Looking only at the X and Y axis. In this example, the AABB is represented by two slabs. The intersections of the slabs form four planes. These planes represent the faces of the AABB. We cast a ray and check if it's intersecting the X slab:
We found two points as a result of testing 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.