Soft Body Physics Explained
Вставка
- Опубліковано 13 тра 2024
- While it’s physically impossible for a rigid body to exist in real life, it presents a simplicity that makes it convenient and optimal to use as a representation of most hard objects. Soft bodies take care of what rigid bodies lack the capability to represent - shapes that are elastic, can be deformed and can be compressed. This is Inspecto, and in this video I attempt to find out exactly how soft bodies work, and explain it to anyone else who’s also been curious about them.
Timestamps
00:00 Intro
00:48 Representation
02:08 Spring-Mass Model
05:17 Collision
07:01 Particle Spring-Mass Model
08:47 Limitations
Music by LAKEY INSPIRED
/ lakeyinspired
/ @lakeyinspired
Thanks for watching - Наука та технологія
You have the potential to become the "3 blue one brown" of game and simulation development.
You already earned my bell, so keep it up!💪🏽
Same!!!
Nice channel for sure
I couldn't have said it better!
He will never be the 3blue1brown of game development.
He leaks the black background lol
Jk, great work🔥 keep it up
@@NHCH "lacks"
this is really some of if not thee best content on math + programming on youtube. keep it up man these are blessed
And physics 😂
homestuck (:
Actually Physics
Soft body physics is made out of rigid body’s
"Thee" means _you._
Nice, I was googling the other day trying to find a video like this.
Goggleing*
Just came from your sound synthesis video, and I'm only a minute into this one, and I had to stop the video and take the time to say how utterly fantastic this content is. If the quality of the content on this channel continues as it has been, this channel is going to be HUGE. I'm absolutely delighted to have found this channel.
Wow What a content.... you're so underrated may UA-cam algorithm bless you
Yes
It getting recommended randomly to me
A great introductory video!
If you feel like it, I'd appreciate if you made a followup video(s) about the different approaches to soft bodies (and maybe integration techniques) that you mentioned.
Yo this video is actually sick. I was surprised to see it doesn't have more views. You definitely earned a subscriber, I've been looking for a good explanation of this for a long time.
Appreciate the support!
You've been looking for a long time, but without bothering to Google it or do a simple search on UA-cam? 😊
Incredible content, keep it up! I'm getting vibes of a soon-to-blow-up channel:)
100% Agreed
Same, this is really well made
Excited to have stumbled upon this gem. Very well produced content sir, can't wait to see your next video!
I love this video!
Total Sebastian Lague
vibes, keep on making great videos!
I absolutely love your videos they are just next level quality with incredible animations and editing, along with great informative content, if you ever hit 1M, I won’t even be surprised
What an incredibly elegant and easy to understand explanation! I wish I had this when I was trying to figure this stuff out in the past!
The quality of your content is so good, man! Keep it up!
This video really helped me get started in this field, I really thought it to be very difficult to do something like this but after watching this video it really inspired me to venture into this field and learn more about physics simulations in general, Thanks a lot 😁
Its easy to do if you dont need realism, pretty much any haphazard way of connecting together points with velocities will give you a quite good result! complete self contrived baby numerics will work! :)
Amazing explanation. Even after learning about Hooke's law in high school and at uni, it never clicked with me how I'd actually make a program to simulate it. However this video does. Now I really want to implement it.
Thank you, good luck if you try to implement it :)
That's exactly the type of content I was looking for, thanks a lot and keep going !
I am SO LUCKY to have found this channel! This is some awesome content, thank you Inspecto!
Now it's gonkee
Subscribed in 15 seconds - I can feel the effort that went into this video
Very well made, informative video. You have a great speaking cadence and you present your material clearly. Thanks!
Holy, this was exactly what I was looking for. Physics for devs, with visuals and model names. Instantly subbed! Keep it up.
This is... refreshingly comprehensive, assuming little to no prior knowledge. Just.. wonderful! I didn't know tutorials could come in this flavor.
your videos are very clear and comprehensive ! Thank you !
This is a concise and informative video-- thank you so much for making this!
So glad I found your channel. I do some physic simulation for kids myself, hope to learn a lot on the coding side from you! Keep up the great job!
Absolutely awesome video, completely perfect! Best explanation yet and maybe ever! Good job
Nice video. Regarding the integration algorithms you could check out verlet-integration (or variations thereof like leap-frog integration). It is only slightly more complicated than euler integration but fixes a lot of its problems. Also it is probably possible to implement a multistep-integration scheme, where you integrate the external forces on the point-masses with different timesteps than the springs, thus reducing the required computational power. If you do so, you can further optimize the integration of the springs, as they are harmonic, thus exactly integratable with terms, that can be precomputed.
This video is actually really good. Well done keep making more.
this is super informative! thanks :)
Amazing video. Such nice work from a small content creator. Im amazed!
Just spent the whole day coding this as well as I could from the video - furthest I've ever gone is circle-circle collisions so this was definitely a pretty big challenge to me.
This video is ridiculously practical and easy to understand. I'm beyond impressed!
As a kid that would like to do some programming stuff as a job later in my life, this is awesome. Currently in class we started to study vectors, but i could still grasp somewhat of an understanding of everything that was said in this video due to the clarity of your explanations. I've learned a lot today. Thank you!
wait until you start studying tensors
@@rykehuss3435 i dunno if i should be scared or excited.....
@@thelostsoul9446 scared
@@rykehuss3435 good
The most underrated channel. You have such knowledge....
Very good tutorial, thanks !
How amazing. I subscribed your channel in the middle of video. Thanks.
I realy like your Intro and the Style of your Videos!
This is a really brilliant video, well done!
This is by far the best video explaining the introduction to softbodies I have ever seen, kudos to you!
Super cool presentation. Really liked the collision part
5k subs only?? It's the first video I've seen of yours and I already subbed. I love the detail!
Absolutely Fantastic video, I was able to implement the whole thing while watching the video
Nice discussion, thank you. You make me want to try this. So I bookmarked your video.
Great video! Keep up the awesome work, your channel is very promising
Your explanations of physics simulations are just amazing.
UA-cam lacks good explanators in the field of computer science simulations -- I'm sure you will be the best one given a couple of years!
Great introduction!
Tryna learn all I can about rigid body physics to make my own crude engine in Java (yes, I'm that -sadistic- masochistic. I always mix up those words), so this video is right up my alley of interest. That ray method for detecting collisions is so damn elegant that I feel stupid for not knowing about it sooner lmao. In before your channel blows up...It's well deserved!
Ever run across a channel and think "Wow how have I not seen their videos sooner, this quality must have attracted a huge following" only to be floored when you see the abysmal view and subscriber count!?!
Those are rookie numbers (42k views / 7k subscribers as of 4/7/2021) we gotta pump this channel up!
Eagerly looking forward to more. Also if you have a Github page where you can share your implementation of these codes that would likely help your viewers as well.
The quality of your videos is incredible
Love the explanation, i’ve personally obtained the best results in the past using a verlet integration scheme in terms of stability
Thanks a lot fir this video.. keep making...good luck
This is such a good analysis of soft bodies. Well done!
Interesting and inspiring topic!
happy this was recommended, really great video
8:44 "Exclamation mark not factorial sign"
Please keep uploading videos !!! You are the great
This is video is so well-explained that even I could understand.
I barely understand any of this but your voice is nice, it's nice to relax to in the background☺
Really great video, good work
This video is great. So glad I got it in my recommendations.
Subscribed. Content is amazing!
That was a super explanation.
The visualization is spot on.
Just imagining the limitations and issues these kind of simulations can create(like, example, the spring moving past its maximum extension in a single frame) makes me happy that I'm not going into that field myself.
Awesome video! Thank you!
Wonderful video!!!
I'm not bright enough to understand what you're talking about, but I now do desire to play squishy Tetris.
Great video... I think.
I've also subscribed to your channel, so I may someday (in the far future) understand what you're talking about.
first video I've seen from you, subbed in 20 seconds
Oh, boy. I wish I had known this Gonkee channel before. This content is gold!
This channel is gold. Glad I found it
same!
This was really great!
Great video, helped me create my own soft body simulation (in python!) without giving the code. Great explanation overall, really helped me understand the methods behind soft bodies. Definitely earned a subscription and a bell.
I am having a little trouble implementing self-collision though. Any help would be much appreciated.
@@BrendanGrazianigive each particle a radius. Check collisions between each particle kinda like:
#idk how to actually python but example:
for i, p1 in enumerate(shape):
for j in range(i+1, len(shape):
p2 = shape[j]
#assuming that in a shape you have each point
#get distance (squared) between each point with d = (x2-x1)^2 + (y2-y1)^2
#sum the radius of both particles and square it. If the dist is less than sum of rad squared, then they are colliding
#for resolution, take the difference between the position of p1 and p2
#divide the difference by the magnitude of the difference to obtain the separation axis
#sum up the radius of both points (not squared) and subtract that by distance (just take the sqrt of previously calculated d) to get penetration depth.
#multiply the difference axis by the pen depth (separation vector) divided by 2 (because you apply it to both points).
#Add and subtract the Sep Vec to both p1 and p2.
That's soo good, I had no idea that that pattern of calculating velocity was called "Euler integration", but I've seen it already in many engines and frameworks. Keep it up
Ruler*
Everything in math/physics is called "Euler ______"
The amount of flashbacks I just had to A Level Maths and Physics is insane
whole lot of linear algebra as well
Woah are you Gonkee? Great information by the way!
Very well done!
You give me super interesting idea, thx
This is SO CLOSE to an advanced Ph.D. level course at a university! Only the quality - higher. Awesome.
Though, at university, you get to see all of the different ways to model stiffness, complex geometries of elements, plasticity.... Still, introduction wise - this is amazing work.
Very exciting channel!
Thanks, amazing tutorial. Will you do the second part?
Love this content!
Love it! Thank you very much!
Man, this video is S tier. God be with you.
Great video keep creating and one video will go viral. I just want to know what software do you use for simulation?
This gives me a whole new level of appreciation for the work C4D4U is doing with his softbody simulations!
Aprectiatcion*
@@AkariInsko Bone apple tea :)
Are you Gonkee ? Pretty owesome explanation o/
Super cool and satisfying
perfect!
I waited so long to find somebody alking about Physic simulation this smooth...I mean : I can create a whole Physic system only using this video EVEN IT'S the purpose was only the soft body...You're my Lord now
Thank you. Fast and easy, I like it
Gold! Thank you.
Amazing Channel!
Great! Just great! Thank you. :))))
Please please keep up the excellent videos
thank you man!!!
Love the vid brotha
Nice video! Just wanted to point out what you are doing is a semi implicit Euler integration which is already slightly more stable than the standard Euler method.
great video dude
I love this video, I love it so much that I'm using it for making an elaborate for my final high school exam, have you used any documentation paper like in the fluid simulations video? I can't find any documentation about spring-mass model that doesn't include heavy mass competences
Great video!