The atan2 Function - Friday Minis 260

thank you so much I've looking in how to do it for so much time!!!

thank you so much! very helpful!

Thank you. Was trying to understand this, in surveying I use Arctan x/y, because of 0 degrees being north, then we go clockwise instead of counter clockwise.

I was using Arctan in excel with if statements to choose the quadrant given the signs.

Now I can use =ATAN2(deltaN, deltaE) and I will get the same result. I have set up an IF statement if the angle is less than 360 to add 360, otherwise it is the correct angle. Works well.

Thank you for helping me visualise the unit circle and relate it to the compass bearings we are used to after using them for so long.

Great explanation, keep up the good work!

Thanks man. I keep coming back to refer this video 😊

Simple but Profound! Thank you! :)

Bruh thank you. Finding the angle between two points is super useful,

great job!

great information. 😎 Thanks.

Thank you. Such a Chad.

Thank you. It finally makes sense :)

Legend.

I confuse atan with atan2 haha. Thanks for the vídeo

Wish I knew this few years ago lol

It's helpful. Thanks a lot

Thank you great video very helpful. I was wondering if I were to use a calculator to find the answer what would I insert? because as you know the simple tan-1(y/x) wouldn't give the right answer for quadrants 2 and 3

I didn't quite get the wikipedia explanation but this was easypeasy to understand thanks!

Very helpful video!! small question: Why don't we just use atan2 all the time since it's so much better than atan?

Thank you, man!!!!!!!!!

Thanks man

Been using it, but never quite understood why. Great vid!

I almost lost my mind to figure out WTF is Atan2, and you just saves my day!! Thank you so much!!!!

thank you sir!

Very very well explained! Thanks!

This was brilliant. short, simple. to the point. giving basic understanding of Atan originally and then comparing and the use of diagrams

Fantastic video. So well done. Thank you!

Thank you, for really nice explanation :D

It's very concise and easy to grasp. I was googling atan2 but I was bombarded with lots of technical jargon. Great job!!

lol sitting in a coffee shop called Well and Good (a phrase you said in the video). Glad you made this, helped.

It helps me to find out more what iam doing now. Thanks

brother in my game after get value from atan2() i need to get negative of atan2() like angle = - atan2(y,x) why that happen ?

a concrete example would have been nice

simple and clear. Thank you. mozambican from Brazil.

Most of the early years of programming is just discovering some guy or gal in the 80s or 90s figured out the solution to the problem you're working on and game development is no exception.

This was exactly what I wanted to find when I searched mathf.atan2

Thanks man, it was very helpful 👍

commenting to feed the algorithm because this helped me understand the function a lot better :)

Thanks man i really needed this

Great explanation!! Thank you!

Thank you soooo much,
my robotics teacher didn't make me understand!

at times you sound just a little bit like rayner teo

Roses are red
violets are blue
There's always a Asian better then you

wait , I'm also Asian 0_0

like

Perfect explanation, thanks!

Great video. Thank you!

this is extremelye helpful, especially when your teacher doesnt understand code himself so you gotta figure things out to pass

Thank you for this excellent video. Having just seen a program using atan2() and a bunch of coordinate calculations, I had no idea what it was doing. This video summed it up perfectly.

I just noticed that there are a number of webpages devoted to the question: Why aren't there asin2() and acos2() functions? After thinking a bit about it, I realized that this is because atan2 relies on the value of atan(y/x) along with the signs of x and y. But this task can also be accomplished by using asin(y/sqrt(x^2+y^2)) or acos(x/sqrt(x^2+y^2)) along with the signs of x and y. So the function could have been called something like angle_finder().

The sad thing is that many people have extensively used functions asin, acos and atan but are still unaware of the existence of atan2.

Thank you for this nice video!