Relaxed k-d tree

When you have a lot of data, like when you are playing a computer game with lots of levels, it can sometimes be hard to search through it all and figure out what you are looking for. A relaxed K-d tree is a way of organizing the data so that it's easier to find what you need. It works by putting the data into smaller sections, like squares or rectangles, so that it's not all one big mess. Then, when you want to search through the data, you can start by looking in one of these sections, and then you only need to look at the data in that section. This makes it easier to find what you need because you don't have to look through the whole, giant bunch of data.