Teaching myself C so I can build a particle simulation

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  • Опубликовано: 23 ноя 2024

Комментарии • 322

  • @gr4dience
    @gr4dience  6 месяцев назад +146

    Hi everyone! Glad to hear you're enjoying the video, it means a lot. I added the source code in the description for those who asked (it's kind of a mess). My semester just ended so I should have some time to work on another graphics project. Let me know what you guys wanna see below! - Cheers

    • @simonzanta1403
      @simonzanta1403 6 месяцев назад +3

      heyy, i really enjoyed your video about computer graphics. Im currently researching sources for my Bachelor Thesis from computer graphics and i would like to ask you, if you could share some insights on how you research topics. It would be really helpful, couse i have no idea where to find sources and mainly what to search for.

    • @gr4dience
      @gr4dience  6 месяцев назад +5

      @@simonzanta1403 Public code repositories were certainly my best friend during this project! If I ever needed inspiration for some feature or felt myself getting stuck, I would do a quick search on RUclips or Google for something similar and that was usually enough to get me through. Another tip is to try breaking down your research into smaller pieces that will be easier to source (ie. "OpenGL instance rendering" as opposed to "OpenGL particles"). Hope that helps!

    •  6 месяцев назад

      third

    • @vinayakk2745
      @vinayakk2745 6 месяцев назад +6

      hello there, really liked your video! I'm a first year computer science student, I would like to know more about what you do and how you got here, I'd love if you'd upload a video talking about yourself, your work and your journey, it would really help and inspire me! Thank you for this great video!

    • @hanya-chan454
      @hanya-chan454 6 месяцев назад

      i love the work, why dont u make gravity simulation using nueton's thurd law of motion, i tryied to do it in unity, it kinda works but somehow the particles after attracting to each other and colliding they start to repeal each other (using barn's hut algorithm , no error in my code) , maybe u can do a simulation and explain the optimization method u choose.

  • @Nipings
    @Nipings 6 месяцев назад +352

    The editing in this video is incredible

    • @njorogekamau3820
      @njorogekamau3820 6 месяцев назад +3

      You can achieve the same using an open source python library called manim

  • @PezzzasWork
    @PezzzasWork 6 месяцев назад +207

    Super cool video! Always funny to see we all encounter the same bugs along the way :D

    •  6 месяцев назад

      first

    • @thatprogramer
      @thatprogramer 5 месяцев назад

      yeah!

    • @SLURPZZZ4461
      @SLURPZZZ4461 Месяц назад

      hello pezzza i adore your videos. I am in highschool and want to make cool physics simulations and fractal stuff. I know some c++ but struggle with implementing stuff like this. How do you recommend i learn to build real, actual projects?

  • @jonathan2847
    @jonathan2847 6 месяцев назад +59

    Engineers make a small number of good RUclips videos then dip back into the void to do their job. This is the good shit.

  • @luce_9801
    @luce_9801 6 месяцев назад +241

    I know what I'm doing in summer now. Thanks for the inspiration!

    • @_Rie_
      @_Rie_ 6 месяцев назад +3

      me too gonna start college in august so im gonna learn C and make this happen good luck to you too

    • @Randomperson-yf2fw
      @Randomperson-yf2fw 5 месяцев назад +1

      @@_Rie_Good luck! C is a tough language in the beginning, but it's so satisfying to use once you've conquered the main pitfalls.

    • @creo_one
      @creo_one Месяц назад +1

      How did it go?

    • @pitiwatkittiwimonchai4656
      @pitiwatkittiwimonchai4656 Месяц назад

      me too

  • @georgiosdoumas2446
    @georgiosdoumas2446 6 месяцев назад +24

    I have studied physics in 1991-1995, and I had a semester on Fortran in the university. Then at 2004 I learned a little C, and the following years I was slowly reading a few books on C and C++ (mainly I was reading stuff about networks and linux for my jobs) . Since late 2023 I became a junior C++ developer. A few weeks I started learning OpenGL (I can give suggestions to who ever is interested). But I know that I am nowhere near the level to make such simulations! I am so impressed that you are still a university student and can produce those videos!

    • @Cassian360
      @Cassian360 5 месяцев назад +1

      sugestions please

    • @npc386
      @npc386 3 месяца назад

      i was thinking about to implement opengl into my little javascript particle system (JPS on github) but during that i came across webgpu and i think thats the better choice. but its hard, shader scripting is another level of abstraction...

    • @clearlyblotted
      @clearlyblotted Месяц назад

      Hey I’d be interested in suggestions to get started! Thank you

    • @heheheheheheheeeeeeee
      @heheheheheheheeeeeeee Месяц назад +1

      Skull issue

  • @samir_buch
    @samir_buch 6 месяцев назад +68

    This is super impressive! Casually glossing over the fact that you taught yourself *not just C* but also how to render things with openGL is no small feat. Your in-depth knowledge of particle simulation is also pretty impressive, requiring at the very least knowledge of relatively advanced calculus and physics. And, on top of all of that, this video was very well written and edited. Overall great job, keep it up!

  • @samuelcollier1764
    @samuelcollier1764 6 месяцев назад +19

    this was an awesome video! C is my favorite programming language and I love seeing graphics programming projects like these :)

  • @youknowwhatlol6628
    @youknowwhatlol6628 6 месяцев назад +11

    hello. i am a beginner in all those things and have just found this channel....can't say how grateful I am to you. You, my friend, are an inspiration. You are Knowledge. You are Greatness. You hold the Power.
    Thank you so much. Thanks. Would like to see more of these simluations, math-physics-chemistry-related programs and such.
    Thank you.

    • @DidIJustDoThat
      @DidIJustDoThat 6 месяцев назад +2

      I am here with you also a noob

    • @GratitudeDueLife
      @GratitudeDueLife 27 дней назад +1

      Same here, I've been wanting to implement programming with the sciences. It'll bring hard but we can do it

  • @yourkidelias
    @yourkidelias 6 месяцев назад +5

    This is a great video, and it is surprisingly well edited! I am not interested at all in physics simulation but the way you explained it really made me start paying attention and it was interesting how you used each optimisation technique to achieve even better results!

  • @nano-ai
    @nano-ai 3 месяца назад +1

    this is amazing. i love how you have combined the most notorious subjects like physics and linear algebra and combined them into an amazing program, all in c! absolutely wonderful quality.

  • @Arun_Kumar_x86
    @Arun_Kumar_x86 6 месяцев назад +4

    this is a great video mate. this video remainds me of sabastian lague's videos. when ever i have thoughts about why i chose programming as a career i think of these kind of videos which boost my happiness and i say to myself that this is why i chose programming as a career to build cool stuffs.
    thanks mate. Great job !!

  • @Hakkyou1
    @Hakkyou1 6 месяцев назад +6

    Very nice video ! You might want to also look at fluid simulation using particle called Smoothed Particle Hydrodynamics. Basically you replace the collision algorithm with a constraint on the density modulated by a kernel. It sound bad like this but you already did 90% of the work there. Keep up the good work ! See you next video.

  • @mojoloop
    @mojoloop Месяц назад

    Ever since contracting brain rot due to working the most boring job I could imagine, this is the first video in 2 years that I didn't skip, fastforward, etc. Bravo dude. Gees.

  • @dylancode
    @dylancode 5 месяцев назад +2

    The new Sebastian Lague!
    Excellent video!

  • @jahaynes256
    @jahaynes256 6 месяцев назад

    I have had this as a future project in my mind for years. I never went to third dimension due to the fear of linear algebra. This is really impressive and inspirational. Thanks for sharing.

  • @vasq
    @vasq 6 месяцев назад +5

    This is pure art. Amazing work bro.

  • @JMW1906
    @JMW1906 6 месяцев назад +2

    One more was to implement optimization is to compare the length squared (in handle collision) instead of competing the length. It means you replace a square root call (expensive) with two multiplications (one of the radius is the same), which can even be pre computed once if every sphere has the same radius:
    x²+y²+z² < 2r²

    • @gr4dience
      @gr4dience  6 месяцев назад +1

      That was my initial thought as well! The only issue is that to "resolve" the collisions, you still need to push each particle apart by half their separation so you would need to compute the distance regardless. I tried moving the square root function inside that condition but it didn't make too much of a difference :)

    • @JMW1906
      @JMW1906 6 месяцев назад +1

      @@gr4dience true, haven't thought about the fact that you need the value later.
      Still interesting though that it makes almost no difference when computed inside the if body. I think that means the grouping into chunks optimization to not check every sphere against every other has a good grid size and already avoids most checks, so most checks have to do the sqrt anyways.

  • @waffles6555
    @waffles6555 6 месяцев назад

    I took a graduate level numerical methods course (my prof contributed to some popular CFD software) and it was very cool to see the different algorithms used. Great job !

  • @QuarzleTheMinecrafter
    @QuarzleTheMinecrafter 6 месяцев назад +5

    Yay another channel with my favourite type of content

  • @wojciechkalinowski3827
    @wojciechkalinowski3827 6 месяцев назад +1

    Very nicely done! I like that you said what you did and kept it rather high level for the video. Whereas, if needed, and if you haven't already, then you can make a more detailed video for the code and maths. Great paste and keep at it!!

  • @Stylpe
    @Stylpe 6 месяцев назад +1

    This is going to be a fantastic springboard for my own physics sim ideas! Starred, will fork when this makes it to the top of my project queue (it's about number 3 I'd say, but full disclosure, it might also never happen 😛)

  • @deadboy9955
    @deadboy9955 3 месяца назад +1

    So much of this is reminiscent of physics used in molecular dynamics simulations.

  • @plvr_strg
    @plvr_strg 4 месяца назад +19

    Someone: "You don't need math to be a programmer"
    Yeah, same as you don't need much strength to hold a sledgehammer... but you need it to wield it.

    • @balijosu
      @balijosu 3 месяца назад +1

      Good metaphor.

    • @Smiley01987
      @Smiley01987 26 дней назад

      Programming is so much more than using complex equations all the time. It all depends in which field you're in.

    • @plvr_strg
      @plvr_strg 26 дней назад

      @@Smiley01987 I didn't talk about job positions, I was talking about programming as a mastery in which you can be capable of much more if you know math.

  • @drakeolejniczak2357
    @drakeolejniczak2357 6 месяцев назад +1

    That was awesome! My favorite part was when you found the linear algebra text and got your change of basis on.

  • @nad.99
    @nad.99 6 месяцев назад +1

    Halfway through this video i feel kms cuz I don’t see myself getting this good anytime soon. Man you’re awesome.

    • @kylerchen2385
      @kylerchen2385 5 месяцев назад

      naw bruh you can get this good - its possible for any of us. if u wanna build something like this just fuckin believe in urself dawg u can do it. do that, and videos like this produce nothing but inspiration and excitement for your future work :)

    • @rideaux8533
      @rideaux8533 5 месяцев назад

      @@kylerchen2385 its not possible for everyone, but we cant know without trying

  • @agaveboy
    @agaveboy 6 месяцев назад +2

    that's great c code if you've really just learned it! good job

  • @Sirepicwin
    @Sirepicwin 6 месяцев назад

    I literally just stumbled on this video, amazing and very fun to watch. Made want to actually learn C and take a break from JS for while lol

  • @stone8684
    @stone8684 6 месяцев назад +1

    dude, you're so incredible. I'd like to see more videos. keep doing them :3

  • @HictionaryYT
    @HictionaryYT 5 месяцев назад

    Gradience, this video is absolutely astonishing. Putting aside the great editing and video structure, the flow of your story and the way you tell it is both fascinating, and so intriguing. I adore computer science as a whole, and this is possibly one of my all time favorite videos now. What a masterpiece you've made. Subscribed, and hope to see more of what you do! :)

  • @PridedBacon
    @PridedBacon 6 месяцев назад +224

    Can you pls open-source this

    • @oldgold8247
      @oldgold8247 6 месяцев назад +8

      In the description now

    • @w花b
      @w花b 5 месяцев назад +9

      Gotta pay for all the spilled sweat

  • @philipmichel-dv
    @philipmichel-dv 6 месяцев назад

    really beautiful video . i can now see the importance o mathemetics in programming

  • @bramhuis3571
    @bramhuis3571 6 месяцев назад +3

    This video is amazing! It reminds me of Sebastian Lague’s video’s.

    • @Rahim-444
      @Rahim-444 6 месяцев назад

      yea very similar project

  • @abdala3475
    @abdala3475 6 месяцев назад +74

    And here I am, struggling with a simple pyramid c code

    • @Pepegalord
      @Pepegalord 6 месяцев назад +3

      Feel you

    • @MasterofBeats
      @MasterofBeats 6 месяцев назад +2

      me fr fr

    • @wardingward4884
      @wardingward4884 6 месяцев назад +4

      Its okay, I'll get harder in arrays, and pointers 💀💀

    • @nad.99
      @nad.99 6 месяцев назад

      انا

    • @nad.99
      @nad.99 6 месяцев назад

      @@wardingward4884 linked lists is where I gave up willingly

  • @avion85
    @avion85 6 месяцев назад +4

    Good luck for your success on yt. We need more content like this.

  • @dennischen2922
    @dennischen2922 6 месяцев назад

    This is such an awesome project! Glad to see a fellow NC State student doing cool things!

  • @ed7590
    @ed7590 6 месяцев назад +1

    Inspiring, makes me want to drop all my JS projects and return to low level.

  • @aleksaggor
    @aleksaggor 5 месяцев назад

    Mesmerizing! You did a fantasic job with this program and video, keep it up :)

  • @zachzulanas4125
    @zachzulanas4125 4 месяца назад

    This is sick! You’ve inspired me to try this haha, just need to find the time

  • @bird5790
    @bird5790 6 месяцев назад +1

    If you are working with grids, the paper "Compact, fast and robust grids for ray tracing" is very worth reading to optimize further

    • @gr4dience
      @gr4dience  6 месяцев назад

      I'll check it out!

  • @arthurmac2511
    @arthurmac2511 5 месяцев назад

    Now i have another reason to keep studying. You're an inspiration for me :D.

  • @kiri9979
    @kiri9979 6 месяцев назад +1

    this video is amazing
    it feels like it's been made by a channel with at least a few hundred thousand subs
    keep it up !!

  • @evanbarnes9984
    @evanbarnes9984 6 месяцев назад +2

    Instantly subscribed! My god this is good.

  • @giorgito24
    @giorgito24 6 месяцев назад +1

    Absolutely stunning, more videos using C please😮

  • @hendersonvirtual
    @hendersonvirtual 6 месяцев назад +1

    Amazing, can’t wait to see more videos!

  • @serhiiko7141
    @serhiiko7141 6 месяцев назад +1

    this video deserves much more than 2.7 k views

  • @htchamber2776
    @htchamber2776 3 месяца назад

    Channel name + channel banner is literally +1000 aura im gonna steal this

  • @mattywlion5174
    @mattywlion5174 6 месяцев назад

    Man it's a fantastic video, it's just great, love this

  • @space-yg
    @space-yg 6 месяцев назад +2

    Yoooooo amazing video!! I learned so much from it

  • @thewholeworldblurred
    @thewholeworldblurred 6 месяцев назад +42

    I clicked because of C!

  • @gabomandam7654
    @gabomandam7654 4 месяца назад

    I just love a good simulation, and even better when it's on C.

  • @DwellerLord
    @DwellerLord 6 месяцев назад

    This is the best video I've seen all year

  • @Green-Code
    @Green-Code 6 месяцев назад +1

    Great video! Keep it up!

  • @uphomes12
    @uphomes12 5 месяцев назад

    so that face pull in Mario 64 is a masterpiece of my childhood.

  • @ticusism
    @ticusism 6 месяцев назад

    Awesome! Thanks for sharing your journey.

  • @eduardomarinho1482
    @eduardomarinho1482 6 месяцев назад

    Great video and very interesting project, will try to do it on my own. Also, I’m impressed for the quality of the video!

  • @symmetry-e8
    @symmetry-e8 6 месяцев назад

    Very cool and informative video. Thanks for the effort.

  • @David-ww2sg
    @David-ww2sg 26 дней назад

    This is so cool :) You've inspired me to want to do something similar

  • @justins7796
    @justins7796 6 месяцев назад

    dang you're a legend if you used a physical Linear Algebra textbook to solve your problems. Subbed!

  • @yoyo3257
    @yoyo3257 5 месяцев назад +1

    When you realise that math class was not just a class
    Fantastic good job

  • @lbgonpokeit
    @lbgonpokeit 6 месяцев назад

    Awesome video, Man I could watch this stuff all day 😅

  • @humongouswalrus
    @humongouswalrus 6 месяцев назад +15

    Another awesome programmer I have to subscribe xD
    Great work

  • @sirjersey
    @sirjersey 6 месяцев назад +1

    Amazing Video! Definitley learned something new :)

  • @the_outer_heaven
    @the_outer_heaven 26 дней назад

    It is very beautiful, thank you.

  • @romeoxxiv
    @romeoxxiv 6 месяцев назад +1

    Very interesting, thank you!

  • @chairlesscrocodile
    @chairlesscrocodile 6 месяцев назад +3

    Great video!

  • @sythatsokmontrey8879
    @sythatsokmontrey8879 6 месяцев назад +1

    Dude we have the same story. I spent 2 years building a physic engine because I saw that one video. But mine is in JS. it's terrible. I love it. Great video BTW.

  • @alessandroserra885
    @alessandroserra885 6 месяцев назад +1

    That's simply amazing

  • @dantedellatogna
    @dantedellatogna 6 месяцев назад +4

    Now I want to do this by myself.

  • @nadjarman
    @nadjarman 6 месяцев назад +1

    Fantastic work!

  • @lel7531
    @lel7531 6 месяцев назад +1

    Very cool video, top notch editing

  • @Spencersstory
    @Spencersstory 6 месяцев назад

    Sick good work man. Makes me remember why I chose computer science

  • @Mia-tk7dz
    @Mia-tk7dz 6 месяцев назад +1

    love the video! good stuff

  • @Gaiuscassius565
    @Gaiuscassius565 6 месяцев назад

    super cool job. Very inspiring i wish i could do something like this

  • @mathiasensimon
    @mathiasensimon 6 месяцев назад +1

    Cant wait for more videos😊

  • @mohammadalaaelghamry8010
    @mohammadalaaelghamry8010 5 месяцев назад

    Great video, thank you for sharing.

  • @moonyl5341
    @moonyl5341 13 дней назад +1

    5:08 an octree is just that but each cube can divide into 8 other cubes so it should be faster

  • @megalos2030
    @megalos2030 6 месяцев назад +3

    Very good video !

  • @aakkii5271
    @aakkii5271 6 месяцев назад +1

    Great channel potential, subbed

  • @futuremapper_
    @futuremapper_ 6 месяцев назад +2

    Love this!

  • @charliechimp6917
    @charliechimp6917 6 месяцев назад +1

    Mesmerising

  • @_david_548k_6
    @_david_548k_6 4 месяца назад

    I don't understand nothing but this is art

  • @shuraosipov
    @shuraosipov 6 месяцев назад +1

    Good job, man!

  • @xylh5085
    @xylh5085 4 месяца назад

    I definitely wanna give this a shot if I can save up enough for a laptop

  • @KlojMaalem
    @KlojMaalem 2 месяца назад

    nice and simple representation

  • @ShizoMoses
    @ShizoMoses 2 месяца назад

    Wow. I feel immensely stupid right now. That was amazing.

  • @MarrisaL-bs2ch
    @MarrisaL-bs2ch 5 месяцев назад

    subbed and notified so I can view more of your awesome project.

  • @gedaliakoehler6992
    @gedaliakoehler6992 6 месяцев назад +1

    Great video, graphics engine, and physics engine :)

  • @databasemadness
    @databasemadness 23 дня назад

    I am a senior software engineer and i am smiling :)

  • @nothingtobelie
    @nothingtobelie 2 месяца назад

    Thank you for sharing!

  • @elon_mysk3278
    @elon_mysk3278 6 месяцев назад +1

    Hey there, Gradience!
    I have a few questions for you!
    First off, I'm curious about how you created the particle simulation using Python. Which frameworks or modules did you use? I consider myself pretty advanced in Python, but I've never seen particle simulations implemented with Python before! :D
    I'm actually in the process of teaching myself C++ with the intention of creating a particle simulation. I believe it would be incredibly useful for my work as a Research Assistant in mechanical engineering! Your video has actually motivated me quite a bit! :D
    Also, in your pinned comment, you mentioned that your semester just ended. Could you tell me more about what and where you're studying?
    Looking forward to more content from you!

    • @gr4dience
      @gr4dience  6 месяцев назад +2

      Hello! For the Python version I used the NumPy and Pyrr packages for math and linear algebra respectively (they both rely on C internally for some operations/speed). Additionally I used PyGame for window/input management and OpenGL (PyOpenGL wrapper) for rendering w/ the GPU.
      You can certainly get pretty far with Python and it allowed me to prototype very quickly. The fact that you can create an entire HashMap with just 4 characters is truly remarkable. That being said, I wouldn't recommend it for a long-term project because of the poor performance and lack of real infrastructure for something like real-time simulation.
      I am currently a CS student in North Carolina. Thanks for the support and best of luck on your project!

  • @Dontlikeyellow
    @Dontlikeyellow 6 месяцев назад +2

    When you try to optimize but your project was made in python:

  • @osalem192
    @osalem192 6 месяцев назад

    A new Sebastian Lague!
    Keep going!

  • @rgel3762
    @rgel3762 6 месяцев назад

    Just what I was looking for

  • @skyt-csgo376
    @skyt-csgo376 6 месяцев назад +1

    Awsome work!

  • @3dgar7eandro
    @3dgar7eandro 6 месяцев назад +2

    Cool Bro!

  • @yousiftop7605
    @yousiftop7605 6 месяцев назад +1

    very enjoyable video

  • @benisrood
    @benisrood 3 месяца назад

    Well done, you learned how to actually program!

  • @LethalChicken77
    @LethalChicken77 6 месяцев назад +1

    When I was simulating boids (which is very similar to particle fluid), the two things the sped it up the most were compiler optimizations and spatial partitioning. For the optimizations, I went with -OFast, which was definitely the biggest proportional improvement.

  • @omarwagmes
    @omarwagmes 6 месяцев назад

    we need the long version of this please