Contents
What do you need to know about AABB collision detection?
An AABB is an axis aligned bounding box. AABB vs AABB is a box vs box or bounding box collision detection. It’s mainly used in broadphase physics detection. Assume that a center point and halfwidth extents or radius are the basic properties of an AABB (there are several methods to represent AABB structure ).
Which is an example of an AABB class structure?
This is a C++ code example for AABB structure: The bounding box (AABB) structure uses a Point class structure. Here is a C++ Point class example implementation: Now we can write a bounding box collision detection example in C++. We use a test to check if there is an overlap between the bounding boxes.
Why do we use a test in AABB?
We use a test to check if there is an overlap between the bounding boxes. There is a discussion in the comments about the validity of this test. There was a couple of issues raised. There was a typo in the test making it not compilable, and it could have been misleading. The last parenthesis in the if-sentences where missing.
Which is an example of an AABB problem?
AABB has a major fundamental problem that may not be visible at first. Take these 3 examples: Example 1: A normal AABB collision. The blue box is where the box is at the beginning of the frame. The green box is where the box is expected to be by the end of the frame. The aqua box shows where AABB will place the box after collision.
Which is the middle player in AABB collision?
Swept AABB is the middle player that will show a lot of the problems that can occur with normal AABB and help understand core concepts used in more advanced collision techniques. This article assumes you understand the AABB algorithm.
Where does the response box go in AABB?
As you can see, AABB has placed the response box on the opposite side of the block. Logically, this makes no sense as it has magically passed through the object. Example 3 shows a destination that doesn’t collide with the object. AABB will assume that there was no collision and the moving box will move through it like there was no collision at all.