| --- Log opened Thu Feb 09 00:00:00 2012 |
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| 13:01 | <~Vornicus> | wtffffff |
| 13:22 | <@TheWatcher> | ? |
| 13:24 | <~Vornicus> | Oh, I figured it out, I was screwing up mutability. |
| 13:26 | <~Vornicus> | (I had a list of coordinates and was trying to fill in a table with 1s at the coordinates, but I made the table wrong, so all the row lists were the same list.) |
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| 15:26 | | * Janus drops in out of nowhere to ask about more dumb things! \o/ |
| 15:26 | <~Vornicus> | Hooray, dumb things being asked! |
| 15:29 | < Janus> | Is there a name for 3d waves that might look like a spring for instance? I'm trying to name stuff, but names like m_wonkFactor and m_sproing don't sit well with me... |
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| 15:42 | <~Vornicus> | "3d waves that look like a spring"? |
| 15:42 | <~Vornicus> | Like, a helix? |
| 15:42 | < Janus> | Yeah, a helix! Like in dna stuff! |
| 15:43 | <~Vornicus> | Or are you thinking like "wiggle a slinky in a particular way and you get longitudinal waves"? |
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| 15:49 | < ErikMesoy> | What's a good reference for graph plotting in Python? I may have to adapt some stuff to it from MATLAB. |
| 15:49 | <~Vornicus> | I've never actually drawn graphs straight from Python |
| 15:51 | <~Vornicus> | I usually go to postscript for that, or excel in simple cases. |
| 15:51 | < ErikMesoy> | Course requirements. :( |
| 15:52 | <~Vornicus> | You might want to grab PIL then, or possibly write to svg. |
| 15:54 | < Janus> | Oh, nyah. It's probably not even a wave, the thing I'm doing. Wanna make a 2D hair renderer. It's ... let me do a picture! |
| 15:56 | <~Vornicus> | Hair is impossible to render. :) |
| 15:56 | < Janus> | http://dl.dropbox.com/u/3108480/hairthing.png |
| 15:59 | < Janus> | Real hair isn't, but the anime hairs maybe! |
| 16:00 | <~Vornicus> | So you're looking to make that thing kind of... flounce? |
| 16:03 | < Janus> | Maybe! The wave thing would only be used to determine the constraints from one node to another though. Like... the angle and distance from one to the next is gathered by the direction the head's facing. Then those constraints are solved from the root node to the last node. Then I should have a 2D path I can just trace a brush on. |
| 16:04 | < Janus> | I never shade hair, so the actual drawing part is thankfully uncomplicated. |
| 16:06 | | * Janus looks up flounce. Oh! |
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| 16:09 | <~Vornicus> | So, so, wait, you're drawing hair and you want to make it look mathematically right, but then you're just drawing on it? |
| 16:09 | < Janus> | Yeah, that's it! |
| 16:09 | <@Vash> | .... |
| 16:10 | | * Vornicus patpats janus. |
| 16:10 | <@Vash> | No. |
| 16:10 | <@Vash> | Judt... No. |
| 16:10 | <@Vash> | Just* |
| 16:10 | < Janus> | ' ^' |
| 16:11 | <~Vornicus> | ...is that wilford brimley cat? |
| 16:11 | <@Vash> | I can see people being arsed about it when doing architecture |
| 16:12 | <@Vash> | But, on a character's HAIR? |
| 16:13 | <@jerith> | 17:49 < ErikMesoy> What's a good reference for graph plotting in Python? I may have to adapt some stuff to it from MATLAB. |
| 16:13 | <@jerith> | ErikMesoy: Look at matplotlib. |
| 16:14 | <@jerith> | (Warning: The maintainers value "shiny feature!" over "sane code", so bits of it might be broken.) |
| 16:14 | <~Vornicus> | Hair is one of the most complicated things to model. THere's hundreds of thousands of loose strands. |
| 16:14 | | * Janus orders his cat insilin from medigold |
| 16:16 | < Janus> | Oh, I know! It's also the most complicated thing to animate by hand though. |
| 16:17 | <@Vash> | ... And you thought it was going to be easier adding math to it? |
| 16:17 | <@Vash> | Seriously? |
| 16:17 | | * Vash twitches at the thought |
| 16:19 | < Janus> | Nope! But I figure if I can do it, I could add many different kinds of hair pretty effortlessly afterward. |
| 16:21 | < Janus> | I don't think the math is all that involved, though I'm also unsure how it'll look in the end. It might look pretty hideous for all I know. realistic hair dynamics usually are |
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| 16:26 | < Janus> | I'll see if I can't get something going by this afternoon! *rolls up all of the sleeves* |
| 16:40 | <~Vornicus> | "I don't think the math is all that involved", he says, as I poke around at PDEs and vector calculus. |
| 16:49 | <~Vornicus> | More seriously: hair becomes (nonlinearly) less strong the further from the root it is; it has a preferred orientation relative to nearby points along the hair; it's under the effects (globally) of gravity, (locally) of the pieces of hair around it and (at a simgle point) of its connection to the scalp. |
| 16:50 | <~Vornicus> | there's elasticity and damping, and a myriad of forces involved. |
| 16:58 | < Janus> | I think anything like wind, gravity, and motion can be combined so there's only one force vector to deal with per node. (how they're combined though, would depend on the weight/drag at that node though) Then from root to tip, it's just a repeated process of nodes trying to keep up with their parent. I could get away without having hair collide with other things thankfully, I think. |
| 16:59 | < Janus> | I think... the distance from node to node will be inelastic though. Any 'bounce' would naturally come about from hair strands straightening out from any forces, then rebounding into their natural curled shape |
| 16:59 | < ErikMesoy> | jerith: I am looking at matplotlib. I am a little uncertain where to start. |
| 17:21 | | Kindamoody is now known as Kindamoody|out |
| 17:27 | < Janus> | so I started working the math out. http://dl.dropbox.com/u/3108480/notinvolved.png |
| 17:28 | < gnolam> | Antialiasing, man! |
| 17:32 | <@Tamber> | XD |
| 17:33 | | * Janus starts aliasing when he's baffled |
| 17:59 | <@froztbyte> | <nick-2128-p> is this the airport utility upgrade that loses features, or the airport firmware upgrade itself |
| 17:59 | <@froztbyte> | <nick-2128-p> cuz the airport utility has upgraded as a part of 10.7.$latest |
| 17:59 | <@froztbyte> | <LanTao> nick - airport utility 6.0.0 sucks, can't graph client connections anymore, can't select IPv6, can't see or change logs |
| 17:59 | <@froztbyte> | <Lysis> it did not lose those features, you can install utility 5.x and have access to those features again |
| 17:59 | <@froztbyte> | <Lysis> also the correct phrase for such a GUI change is "going gnome" |
| 17:59 | <@froztbyte> | hahaha at "going gnome" |
| 17:59 | <@Tamber> | XD |
| 18:00 | < gnolam> | Heh. |
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| 18:36 | < Janus> | aaaaaaaa http://dl.dropbox.com/u/3108480/idontknowhowdo.png |
| 18:38 | < ErikMesoy> | Nift |
| 18:41 | < Janus> | Maybe the math is more involved than I first thought. Either that, or I am math handicapped. Rolling around in my math wheelchair. The wheels have a pi of exactly 3 |
| 18:49 | <@froztbyte> | haha |
| 18:49 | <@froztbyte> | what are you doing, exactly? |
| 18:49 | <@froztbyte> | those look like movement/vector things |
| 18:52 | < Janus> | Hair. :[ I think I might got something now though! I just needed to stop trying to draw it all in one picture is all |
| 18:57 | <@froztbyte> | hair? |
| 18:58 | <@froztbyte> | it should possibly be noted that I've never touched any non-primitive graphics code/math /ever/ |
| 19:20 | < Janus> | http://dl.dropbox.com/u/3108480/magh.gif |
| 19:21 | <@Vash> | ... |
| 19:21 | | * Vash has only one thing to say |
| 19:21 | <@Vash> | Vorn is taking a nap. |
| 19:22 | <@Vash> | That's why he's not saying something about it. |
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| 19:41 | <@froztbyte> | Janus: heheh |
| 19:48 | | * Janus is a fish out of water. Flops around on the beach of vector calculus. |
| 19:51 | <~Vornicus> | In a word: Told You So. |
| 19:51 | <~Vornicus> | Well, in short. |
| 19:56 | < Janus> | I should have knooown |
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| 20:24 | < maoranma> | I am totally ircing on my Kindle |
| 20:24 | <&McMartin> | like omg |
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| 20:25 | <@Number3> | wtf |
| 20:25 | < maoranma> | lol |
| 20:25 | <&McMartin> | bbq |
| 20:25 | <&McMartin> | In actual "omgwtfbbq" news: http://www.kickstarter.com/projects/66710809/double-fine-adventure |
| 20:26 | <&McMartin> | I hasn't even been a full day yet; they're at double their fundraising goal, which I find hilarious |
| 20:28 | <@froztbyte> | maoranma: nice |
| 20:28 | | Kindamoody|out is now known as Kindamoody |
| 20:29 | < maoranma> | Yeah. I can not click on links. Says multiwindow not supported. |
| 20:29 | <&McMartin> | Ah, OK, so |
| 20:30 | < maoranma> | I have the free 3G Kindle too lol |
| 20:30 | <&McMartin> | Double Fine produtions, the creators of Psychonauts and Stacking, and founded by some of the LucasArts legends from back when LucasArts ruled adventure gaming, put up a $400,000, 34-day kickstarter project to get broad investment for a new adventure game. |
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| 20:30 | <&McMartin> | They reached $400,000 in eight hours. |
| 20:30 | <&McMartin> | 33 days to go |
| 20:31 | <~Vornicus> | REasons to love knowing math: a simple rejigger of your matrix multiplication code (replacing + with min and * with +) turns it into a thing that lets you calculate the full path cost matrix for an edge-weighted graph without significant effort. |
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| 20:35 | | * Janus tries to rejigger matric multiplication code. The computer travels through time and blungeons his grandpa to death |
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| 20:44 | <@froztbyte> | sure it wasn't their grandfather, Janus? |
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| 22:43 | < Mango> | Will 33 characters encoded as base64 always always always be 44 characters? |
| 22:46 | <~Vornicus> | 33 ascii or ascii-extended characters will always encode to 44 characters. |
| 22:46 | < Mango> | Thanks! |
| 22:47 | <~Vornicus> | (more precisely, n bytes will always encode to ceil(4n/3) base64 characters) |
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| --- Log closed Fri Feb 10 00:00:16 2012 |