r/Simulated • u/mengohmengohmeng • May 30 '19
Research Simulation Breaking Bread
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u/arbili May 30 '19 edited May 30 '19
Post it in r/Sourdough and they'll rant about how dense the crumb is.
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u/heirofblood May 30 '19
I thought this was r/Breadit at first and was preparing to listen to debates about crumb structure…nope! Just a nice simulation.
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u/METOOTHANKleS May 30 '19
Just for you: I think that it looks a bit sponge-like or foamy - like the lift was given by egg whites like in an angel food cake or something, not the elastic chewiness of well developed gluten. Overall 7/10 crumb, 9/10 simulation.
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u/RaeADropOfGoldenSun May 31 '19
I had the top post of all time on breadit for years and I’m still a little bitter it was overtaken
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May 30 '19
Achuallyyyyy due to the rising temp and humidity of sourdough is should not have a crumb this dense. In this essay I will....
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u/Yuca965 May 30 '19
Look like a sponge
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u/ReaperOfNothing May 30 '19
Whats the difference anyway?
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u/TheBananaKart May 30 '19
$90 on bread though wtf
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u/voluminous_lexicon May 30 '19
I mean he shows the box and it's got like a dozen loaves in there, $7 a loaf is expensive but not for specialty bread
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u/BreeBree214 May 30 '19
They probably put most of it in a freezer for later. So it's like a year supply
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u/scoops22 May 30 '19
That’s what I was thinking. I feel like a sponge will be more resistant and rip all at once like that while bread is soft and begins tearing as soon as you pull. Also the crust would probably hinge as it’s hard to break and also the tongs would probably dig into the bread.
I mean I’m super impressed but we still have some ways to go before we get to 100% realism
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u/Forbizzle May 30 '19
I wonder if we’re more skeptical of food, and there’s a wider uncanny valley.
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u/nik282000 May 30 '19
Being something that you stare at and then feel with your hands and mouth you probably get the highest correlation between looky and feely data.
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u/rarlei May 30 '19
I refuse to accept this is simulated
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u/CeldonShooper May 30 '19
You took the blue bill.
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u/FTWOBLIVION May 30 '19
It's just tastes better than any other bread on the surface
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u/Chewcocca May 30 '19 edited May 30 '19
Obviously simulated though. IRL it would tear evenly until about halfway down and then jag off to one side, completely ruining my hopes and dreams.
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May 30 '19
You also enjoy sponge bread? I heard there is a guy who ordered a lot of it. Get in touch with him, last time I saw him he was cleaning his toilet with it.
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u/HeyYou_GetOffMyCloud May 30 '19
This was from the latest siggraph tech papers, so it is the cutting edge of technology
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May 30 '19
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u/Ashenspire May 30 '19
I honestly thought the tearing was done well.
It's that "everything is actually made of liquid" bounce at the end that took me into uncanny valley.
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u/whitestguyuknow May 30 '19
I'm sure everyone will see it slightly differently but it comes off obviously unrealistic to me. I've never seen bread tear in a way like that and it literally looks like fake bread made from a type of foam or something. Especially with the firmness and jiggle it has
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u/letsgocrazy May 30 '19
Really?.. It's really good, not just shitting on it, but it looks more like foam being ripped instead of actual bread. Like it doesn't tear right or soon enough and seems to have a more "bed foam" like stretch and bounce to it.
That's why it's a research project and not a finished product 😊
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u/Valiade May 30 '19
Ok, so criticism is welcome right?
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u/letsgocrazy May 30 '19 edited May 30 '19
I guess so. I'm pretty sure though, whoever is doing it is fully aware of the issues they would need to face to break dough realistically - and also the kind of programming and interface that needs to happen to go into it.
Sop you saying "ooh, that doesn't look right, make it a bit more bready" might not be useful in any way.
But do what you feel is best.
edit: I mean, just look at their presentation video on what else they can do :
https://www.youtube.com/watch?v=lNri-x2nK7o
What could you possibly say to "critique" their work in any meaningful (to them) way?
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u/LoneRanger9 May 30 '19
Well the person they're replying to can't believe it isn't bread which is ridiculous since it doesn't act like bread at all.
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u/whitestguyuknow May 30 '19
Oh I'm sure. Like I said I wasn't trying to to crap on it. It's already impressive to me and I'm sure it would be even more so given I were more immersed in the topic. Even though I don't create sims on my own time I can tell there's a lot of different variables that go into creating a realistic bread tear. I'm sure we'll get there one day. I mean this certainly is close
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u/Beraldino May 30 '19
This acted more like a sponge
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u/Wurth__While May 30 '19
It looks like there was minimal crustal stiffness vectoring applied. I guess we don't have the tech yet.
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u/81isnumber1 May 30 '19
Yeah that seems like the chief issue here. Still neat tho
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u/Akoustyk Jun 02 '19
I agree a crispier crus would have been cool, but I found this behaved a lot like a fresh warm bread, and if they would have added some steam escaping as it opened up, that would have helped sell it even further.
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u/JonesBee May 30 '19
Uncanny gluten free bread.
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u/Mooshington May 30 '19
This is giving me an uncanny valley effect, but for bread. It's off just enough to make my brain go "this is pushing my 'eat that' buttons, but something is wrong here."
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u/Mostlymature May 30 '19
Honestly I don't think it looks like breadbeing ripped, HOWEVER it does look exactly like synthetic foam or sponge being ripped. Put a yellow and green sponge texture on there and it would be perfect.
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u/LabyrinthConvention May 30 '19
The material looks too spongy for bread, but the actual tearing looks right
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u/scoops22 May 30 '19
The issue is that it stretches and then rips all at once. Something a thick material like sponge would do. Bread is full of air pockets and very soft it begins to rip as soon as you pull, is like a slower prolongated tear.
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u/AlphaTardigrade May 30 '19
I̝̝͞ͅt̶́ͩ̔ ͈͎͉̒̇ͅb̮̥͎l̝͓e͏ĕ̠͓̤̻̽ͤe̼̠̎̏̏̇̓͞e̵̲͙͔͚͙ͦ͐̑̀ḛ͍͙͚ͨ̑̂dͦ̿̆̋͑̀s̩͍̈́̎̀͂͌̑̚
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Sep 12 '19
Beams of fire sweep through my head
Thrusts of pain increasingly engaged
Sensory receptors succumb
I am no one now, only agonyMy crimson liquid so frantically spilled
The ruby fluid of life unleashedRipples ascend to the surface of my eyes
Their red pens drawing at random, at will
A myriad pains begotten in their wake
The bastard spawn of a mutinous selfThe regurgitation of my micro nemesis
Salivating red at the prospect of my ruin, my doomMalfunction - the means for its ascent
Bloodletting - the stringent voice to beckon my soul
So futile, any resisting tension
As death-induced mechanics propel its growthThe implement, the device of my extinction
The terminating clockwork of my gleeful bane
The definitive scourge of its mockery
The end-art instruments lethality attainedHeed - it commands, heed my will
Bleed - it says, bleed you willFalling into the clarity of undoing
Scornful gods haggle for my soul
Mind's eye flickers and vascillates as I let go
Taunting whispers accompany my deletionA sneering grin, the voice of my reaper
Chanting softly the song of depletion
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u/ezrub27 May 31 '19
It's cool, but if your gonna try it again. Maybe make it look less like insulation. But either way, really cool man. Great job!
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May 30 '19
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u/schmon May 30 '19
Awesome can't wait to have this paper in my software !
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u/flarn2006 May 30 '19
Then what are you waiting for? Click the link and it'll be in your browser. ;p
Seriously though why don't they ever post the code they use to make the demo? Why make people reinvent the wheel if they just want to mess around with it?
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u/AerysBat May 30 '19
Academia is incredibly competitive. If they want to use this code to advance their own research they don't want to simply give it away. If the code is commercially valuable they would also want to patent and sell it.
Most of the time these tech demos sweep serious limitations under the rug. It might be that a team of 6 computer science PhDs can produce a handful of clips after several of years of work, but that the method is unusable for artists, too slow, finicky, etc. That's why these SIGGRAPH papers so rarely turn into commercial products, or if they do it's only several years later.
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u/schmon May 30 '19
My guess is implementing the code is 95% percent of the work.
In my field this guy is the best/worst: https://houdinigubbins.wordpress.com/
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u/evil_twinkie May 30 '19
Fanfu's group does post their software, just usually not right away. You can access code from their other MPM papers on his webpage: https://www.seas.upenn.edu/~cffjiang/
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u/GiantPandammonia May 30 '19 edited May 30 '19
great work! a couple questions. can you get frictional interactions at fracture surfaces using your phase field approach? for example to simulate crushing of piece of chalk into a powder? also, with your fracture energy damage law do you run into issues of a maximum element size, above which the stain energy at the failure stress exceeds that which should be dissipated by the fracture? finally, the video shows numerical fracture in "traditional" mpm for the ballistic dinosaur case, but not for the twisting bar. why not?
edit: I may have erroneously assumed op was one of the authors... consulting their post history I don't see a lot of computational mechanics
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u/Noxium51 May 31 '19
Sometimes I’ll just YouTube siggraph tech demos on YouTube because every one is super fascinating, it’s like this sub on steroids
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u/ryan770 May 30 '19
I came from r/all and didn't realize this was computer-generated for like 5 minutes. I was very confused by the comments, and even more confused by the heat map at the end.
Neato.
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u/ricdesi May 30 '19
This is pretty phenomenal, I think the only thing I can say for improvements might be that the texture of the bread comes off looking a little low-res, especially with the crisper-looking (and slightly plasticky?) crust surrounding it.
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May 30 '19
aite that is incredibly interesting. i've dealt with vfx simulation for softbody dynamics and fluids, but i've never thought of sponges! what an interesting perspective from the heatmap shot. cool stuff.
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u/pseudoart May 30 '19
I didn’t see what sub I was in, so my initial thought was “that’s one seriously dense bread”. Didn’t think it was simulated until the stress map. Pretty cool.
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u/QuantumBullet May 30 '19
The blue bread had more of a lasting emotional impact. I look forward to more.
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u/TheRumpletiltskin May 30 '19
Looks amazing. The only thing that looked a bit off was that last little tear. the bread looks a bit more like a thick cotton candy consistency.
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May 31 '19
i just scrolled by without seeing the sub name and thought it was real. good job OP, it looks great
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May 31 '19
It rips more like one of those squishy kids toys that rise slowly, kinda like memory foam
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u/09ss Oct 13 '19
High as a kite rn and I actually thought that bread was real until the blue bread came on
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u/abbadon420 May 30 '19
The stretch before the breaking looks a bit off. The breaking is marvellous though
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u/AnOldPhilosopher May 30 '19
Yeah I think it’s the way the texture stretches... Still this is just insane!
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u/Herkentyu_cico May 30 '19
If possible try making the crumb have a different flexiblity so the bread kinda pulls together and when the crumb snaps (both sides, bot not necesserily) tho whole things falls apart much faster, kind of like when you are pulling a gummybear apart, and suddenly it snaps.
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u/dougm68 May 30 '19
I clicked this because the title made me think Vince Gilligan created a new biblical show about a messiah going through mid life.
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u/dudesweetfannypack May 30 '19
At first I thought this was just some random gif until I noticed the sub, wow
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u/GoblinPanties May 30 '19
get some procedural textures to have some edges browned, and also get some subsurface in there!
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u/livens May 30 '19
C̶̻̆̒ͅa̴̼͈̖̮̗͖̯͆́̅͗͗͝͝͝͝ͅņ̵̛̪͚̬͎̜͂̓̅̈́̍͜͠ ̷͇̱̀i̶̭̊̾́͌̐̚ ̸̙̓͆͋̽̈́́͗̚ͅh̶͙̙̫̳̍a̸̬͈̥̩͙̬̎s̸̡̪̫̭̞̰̰͉̑͑̋̊̑̀͆̚ ̶̹̲̠̬̳̼̯̌̓t̶̟͆̏̏͆̄̍h̸̬̖̝͎̝̟̾e̷̡̼̭̬͉̠̋̕ͅ ̸̨̞̝̪̤̩̋͗̽͆̂͆̕͜͝͝b̷̫̙̙͋́͠͝l̴̖̺̖̣͙̭̃̒̍̏̆͝͠ͅų̶͍̞̰͖̖̞̞̋̀̃̓̍͊͑ͅ ̷̨̛̹͉̯̮͚̬̀̂̃̎̅̓̚b̸̺͈͙̮̌͜r̴̛̝͉̤̮̰̹͕̗̈́́͋̃́e̵̛̛̟̾̉́́d̷̢̟͙̱̭̤̓̌́?̶̣̞̯̲̲̫̪̰̹̈́̋͋̈́̂̚
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u/SerialMasticator May 30 '19
That heap map blue definitely took me by surprise