Soft Body Physics Explained
ฝัง
- เผยแพร่เมื่อ 10 พ.ค. 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 - วิทยาศาสตร์และเทคโนโลยี
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._
Wow What a content.... you're so underrated may TH-cam algorithm bless you
Yes
It getting recommended randomly to me
Nice, I was googling the other day trying to find a video like this.
Goggleing*
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.
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.
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 TH-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
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!
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
Excited to have stumbled upon this gem. Very well produced content sir, can't wait to see your next video!
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 :)
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! :)
The quality of your content is so good, man! Keep it up!
Subscribed in 15 seconds - I can feel the effort that went into this video
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!
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.
I love this video!
Total Sebastian Lague
vibes, keep on making great videos!
That's exactly the type of content I was looking for, thanks a lot and keep going !
Holy, this was exactly what I was looking for. Physics for devs, with visuals and model names. Instantly subbed! Keep it up.
This video is ridiculously practical and easy to understand. I'm beyond impressed!
I am SO LUCKY to have found this channel! This is some awesome content, thank you Inspecto!
Now it's gonkee
This is... refreshingly comprehensive, assuming little to no prior knowledge. Just.. wonderful! I didn't know tutorials could come in this flavor.
where the beamNG fans at?
Here
Aqui
Here
Ima making my own BeamNG Muhahahahahah
Present
Very well made, informative video. You have a great speaking cadence and you present your material clearly. Thanks!
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.
your videos are very clear and comprehensive ! Thank you !
This video is actually really good. Well done keep making more.
This is a concise and informative video-- thank you so much for making this!
Absolutely awesome video, completely perfect! Best explanation yet and maybe ever! Good job
Amazing video. Such nice work from a small content creator. Im amazed!
5k subs only?? It's the first video I've seen of yours and I already subbed. I love the detail!
Your explanations of physics simulations are just amazing.
This is by far the best video explaining the introduction to softbodies I have ever seen, kudos to you!
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.
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
Love the explanation, i’ve personally obtained the best results in the past using a verlet integration scheme in terms of stability
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!
The most underrated channel. You have such knowledge....
TH-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!
I realy like your Intro and the Style of your Videos!
I barely understand any of this but your voice is nice, it's nice to relax to in the background☺
this is super informative! thanks :)
This is such a good analysis of soft bodies. Well done!
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.
Super cool presentation. Really liked the collision part
Great video! Keep up the awesome work, your channel is very promising
Nice discussion, thank you. You make me want to try this. So I bookmarked your video.
This is a really brilliant video, well done!
Absolutely Fantastic video, I was able to implement the whole thing while watching the video
How amazing. I subscribed your channel in the middle of video. Thanks.
Very good tutorial, thanks !
8:44 "Exclamation mark not factorial sign"
The quality of your videos is incredible
This is video is so well-explained that even I could understand.
happy this was recommended, really great video
Thanks, amazing tutorial. Will you do the second part?
Please keep uploading videos !!! You are the great
Great video keep creating and one video will go viral. I just want to know what software do you use for simulation?
This video is great. So glad I got it in my recommendations.
Thanks a lot fir this video.. keep making...good luck
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.
Great introduction!
Oh, boy. I wish I had known this Gonkee channel before. This content is gold!
The visualization is spot on.
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.
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
Really great video, good work
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 ______"
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
Interesting and inspiring topic!
Man, this video is S tier. God be with you.
That was a super explanation.
Wonderful video!!!
Subscribed. Content is amazing!
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.
Why is this in my recommended. And why do I want to watch more of this guy’s work
Awesome video! Thank you!
Excellent explanation.. The animations were quite good. How did you make them?
This gives me a whole new level of appreciation for the work C4D4U is doing with his softbody simulations!
Aprectiatcion*
@@AkariInsko Bone apple tea :)
Woah are you Gonkee? Great information by the way!
first video I've seen from you, subbed in 20 seconds
This channel is gold. Glad I found it
same!
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.
This was really great!
Very well done!
Very cool video I like how you explain! Can you put programming language you use or maybe software in description pleases.
Love it! Thank you very much!
Very exciting channel!
You give me super interesting idea, thx
Understanding soft bodies seemed so out of reach until this video. Nice job.
Are you Gonkee ? Pretty owesome explanation o/
The amount of flashbacks I just had to A Level Maths and Physics is insane
whole lot of linear algebra as well
Thank you. Fast and easy, I like it
Love this content!
Super cool and satisfying
Amazing Channel!
great video dude
Great video!
Gold! Thank you.