Why is the origin located at the top-left corner rather than the bottom-left corner of the screen?

Question

As a mathematician, I don't like this. The y-axis should increment upwards. I have no idea why the origin is at the top-left corner and why the y-axis increments downwards. Is there anyone out there who knows why this is so? Thanks!

Answer 1

Erik Johanson
The top-left part of your screen is usually the starting point of the screen, that's why it's called the origin

Answer 2

This is due to the history of computer graphics. This thread explains it well.

https://gamedev.stackexchange.com/questions/83570/why-is-the-origin-in-computer-graphics-coordinates-at-the-top-left