I am an ICT-engineer that specialized in game development. Even my Unity teacher said: if you need to work with quaternions, the best thing to do is go to a corner and cry.
just learned about rotation types today and this popped in my recommended videos, super consice and helpful. although i think there might be some suboptimal solutions here but i understand the ideas overall.
4 months ago I ask my senior, "What is Quaternion stand for? How do I use or understand these stuff" he said you better not, just ask for the result. . Today I just found this video, I'm not regret, it just a bit overwhelm. And yea my head is dead. 😂
If you're finding a Quaternion by getting an angle between two vectors with atan, you're probably better off using the function that takes two vectors and gives the Quaternion between them. The latter is really √(u/v) (literally, undoing v, then doing u, then halving the distance travelled because otherwise they act like reflections), which could require a normalization step, but doesn't require using atan and then immediately sine/cosine. If you're doing 2D games, then you really don't need Quaternions. Complex numbers work just fine as long as you don't treat them like 2D directions. Quaternions aren't inherently hard to understand. They're hard to understand because they're obfuscated.
Thank you for your input. As I said in most of examples, there is little to no reason to use them in 2d games. Where i show them, it's because I thought I would be easier to understand by complete begginer. Maybe youre right, it might be confusing, it will avoid it next time
+im showing function that makes quaternion form 2 vectors (FromToRotation). I used getting an angle to showcase Quaternion.Euler, because I wanted the example not to be static and making it this way is common practice, while dealing with topdown movement as a begginer
@@UnityForge Going from the sides of a right triangle, to an angle, to the sides of a right triangle seems like a lot of wasted energy for "common practice." Regarding quaternions in 2D, again, it's somewhat wasted energy, especially since most compilers won't optimize multiplying by 0 due to f̸͖̽l̵̥͗o̷̥͋ȁ̷̜t̶̤̾î̴̥n̸̨͌ḡ̶̨ ̵̘͐p̷̬͌o̷͓̊i̴̫̇n̶̥̍t̴̪̕, but complex numbers also have a few properties that don't extend to quaternions which could mislead some people when trying to move from 2D to 3D. So for demonstration, using quaternions is probably fine as long as it's clear that one should use the right tool for the job.
@@angeldude101 yeah you are probably right, I will remake this video some time in the future accoring to your points, also i feel i could explain it much more clearly. Trust me i chcecked many tutorials and forums and i found quite a lot of this "common practice" or maybe i can't google well, which is more likely
@@UnityForge Honestly, I wouldn't be too surprised if it _was_ common practice, and from what little I've seen on my own, I would agree. I just think it's _silly_ that it's common practice when expanding the function calls reveals how it's literally just plugging the result of atan into sine and cosine, when the inputs to atan _are the sine and cosine._
I think the reason no one uses Quaternion.AngleAxis is because you can just use Quaternion.Euler with the the angle multiplied by the normalized axis. If you want to rotate A degrees around axis B you just do Quaternion.Euler(A * B.normalized)
Not yet, it relatively new concept and I don't work at it as much as I would like to because i'm starting collage therefore I'm working at the factory to earn some money. You can check out my other game, it's called GravAssist and is on google play
I an trying to rotate objects to a certain angle using Quaternion.Euler but it does not seem to work:( //_rotY is set through inspector for eachh of the 4 objects. transform.parent.rotation = Quaternion.Euler(0, _rotY, 0); //wrong rotation _parentAnim.speed = 0f; meshRenderer.material.SetColor("_TintColor", new Color(1f, 0, 0, 10 / 255f));
Try doing it with hardcoded values (eg. transform.parent.rotation = Quaternion.Euler(0, 45, 0);), if it works corretly it's _rotY fault. Also remember you are setting global rotation, if you're intending to set the local rotation (rotation relative to the parent object), you should use transform.parent.localRotation instead of transform.parent.rotation.
I don't have any question but it's very hard to remember all those rotesion faction's I need to watch this video wean need them in the order to understand how they works.
0:31 No I can!!!! **spends entire life to learn it to prove u wrong** No one going to deal with that. Every content creator should talk certain like this instead of creating 20 sentences to explain.
I am an ICT-engineer that specialized in game development. Even my Unity teacher said: if you need to work with quaternions, the best thing to do is go to a corner and cry.
Great video. This is also how I deal with quaternion. Don't need to understand the math. Just know the useful functions.
just learned about rotation types today and this popped in my recommended videos, super consice and helpful. although i think there might be some suboptimal solutions here but i understand the ideas overall.
My biggest mistake while learning Unity was trying to understand quaternion DEEPLY 🤣🤣🤣🤣🤣🤣
those chatgpt generated inspirational quotes were hilarious
Thanks, I learned a lot, specially on the `Quaternion.FromToRotation`.
Thank you!
You make me laught with you serious voice with "quaternioon" at 0:12, that was the world I was Struggling with :D Thank you :)
This was a fantastic tutorial. Thank you!
4 months ago I ask my senior, "What is Quaternion stand for? How do I use or understand these stuff" he said you better not, just ask for the result.
.
Today I just found this video, I'm not regret, it just a bit overwhelm. And yea my head is dead. 😂
If you're finding a Quaternion by getting an angle between two vectors with atan, you're probably better off using the function that takes two vectors and gives the Quaternion between them. The latter is really √(u/v) (literally, undoing v, then doing u, then halving the distance travelled because otherwise they act like reflections), which could require a normalization step, but doesn't require using atan and then immediately sine/cosine.
If you're doing 2D games, then you really don't need Quaternions. Complex numbers work just fine as long as you don't treat them like 2D directions.
Quaternions aren't inherently hard to understand. They're hard to understand because they're obfuscated.
Thank you for your input. As I said in most of examples, there is little to no reason to use them in 2d games. Where i show them, it's because I thought I would be easier to understand by complete begginer. Maybe youre right, it might be confusing, it will avoid it next time
+im showing function that makes quaternion form 2 vectors (FromToRotation). I used getting an angle to showcase Quaternion.Euler, because I wanted the example not to be static and making it this way is common practice, while dealing with topdown movement as a begginer
@@UnityForge Going from the sides of a right triangle, to an angle, to the sides of a right triangle seems like a lot of wasted energy for "common practice."
Regarding quaternions in 2D, again, it's somewhat wasted energy, especially since most compilers won't optimize multiplying by 0 due to f̸͖̽l̵̥͗o̷̥͋ȁ̷̜t̶̤̾î̴̥n̸̨͌ḡ̶̨ ̵̘͐p̷̬͌o̷͓̊i̴̫̇n̶̥̍t̴̪̕, but complex numbers also have a few properties that don't extend to quaternions which could mislead some people when trying to move from 2D to 3D. So for demonstration, using quaternions is probably fine as long as it's clear that one should use the right tool for the job.
@@angeldude101 yeah you are probably right, I will remake this video some time in the future accoring to your points, also i feel i could explain it much more clearly. Trust me i chcecked many tutorials and forums and i found quite a lot of this "common practice" or maybe i can't google well, which is more likely
@@UnityForge Honestly, I wouldn't be too surprised if it _was_ common practice, and from what little I've seen on my own, I would agree. I just think it's _silly_ that it's common practice when expanding the function calls reveals how it's literally just plugging the result of atan into sine and cosine, when the inputs to atan _are the sine and cosine._
0:18 LMAOOO I can 100% relate to this
FRFRFR
bro this is so funny I subscribed.
3:00 what music is this
Mega-helpful video!
I think the reason no one uses Quaternion.AngleAxis is because you can just use Quaternion.Euler with the the angle multiplied by the normalized axis. If you want to rotate A degrees around axis B you just do Quaternion.Euler(A * B.normalized)
thank you very much for this video you explained it so well
Quaternion: Let's represent 3D rotation using a 4th dimension
Big brain time, bois.
Great video! Also where is your spaceship game available for download?
Not yet, it relatively new concept and I don't work at it as much as I would like to because i'm starting collage therefore I'm working at the factory to earn some money. You can check out my other game, it's called GravAssist and is on google play
I an trying to rotate objects to a certain angle using Quaternion.Euler but it does not seem to work:(
//_rotY is set through inspector for eachh of the 4 objects.
transform.parent.rotation = Quaternion.Euler(0, _rotY, 0); //wrong rotation
_parentAnim.speed = 0f;
meshRenderer.material.SetColor("_TintColor", new Color(1f, 0, 0, 10 / 255f));
Try doing it with hardcoded values (eg. transform.parent.rotation = Quaternion.Euler(0, 45, 0);), if it works corretly it's _rotY fault. Also remember you are setting global rotation, if you're intending to set the local rotation (rotation relative to the parent object), you should use transform.parent.localRotation instead of transform.parent.rotation.
Wonderful!
I still don't understand how I rotate around X and Y only and locking Z...
I don't have any question but it's very hard to remember all those rotesion faction's
I need to watch this video wean need them in the order to understand how they works.
i love you.
0:31 No I can!!!! **spends entire life to learn it to prove u wrong**
No one going to deal with that. Every content creator should talk certain like this instead of creating 20 sentences to explain.
łapka w dul
beztakich...
first
aha
Now, explain quaternion. Not Quaternion.
The one with a lower q😅