Soft Body Physics Explained

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

Thanks for watching

[jao]

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!💪🏽

[lucinoide-]

this is really some of if not thee best content on math + programming on youtube. keep it up man these are blessed

[anupamrana]

Wow What a content.... you're so underrated may YouTube algorithm bless you

[AlexandriaLibraryGame]

Nice, I was googling the other day trying to find a video like this.

[specialgorilla]

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.

[TheSirako]

Incredible content, keep it up! I'm getting vibes of a soon-to-blow-up channel:)

[FenlonAcoustic]

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.

[misterZalli]

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.

[bobsmithy]

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.

[ruchirraj]

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 😁

[thelostsoul]

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!

[Testgeraeusch]

8:44 "Exclamation mark not factorial sign" <- made my day :D

[TheSpinTensor]

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.

[vbt]

I love this video!
Total Sebastian Lague
vibes, keep on making great videos! <3

[SuryanIsaac]

Subscribed in 15 seconds - I can feel the effort that went into this video

[BrendanGraziani]

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.

[rhetorical_]

I am SO LUCKY to have found this channel! This is some awesome content, thank you Inspecto!

[andermium]

This gives me a whole new level of appreciation for the work C4D4U is doing with his softbody simulations!

[charliew.]

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.

[alessi]

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!