Timeline for Sprocket Science: Animating a Chain Drive System
Current License: CC BY-SA 4.0
25 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| May 4, 2023 at 8:01 | history | edited | mousetail | CC BY-SA 4.0 |
Fix imgur link since they are going to delete all anonymous images
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| Sep 30, 2017 at 12:37 | answer | added | micnic | timeline score: 3 | |
| Apr 12, 2016 at 12:50 | comment | added | Ell | @MartinBüttner Hit enter too soon... TBH, I can't remember why exactly this happens right now. It has to do with the fact that, since the chain is so short in this case, the approximation of 4π is way off. But I can't remember why it affects the entire sprocket, and not just the wrap-around point. | |
| Apr 12, 2016 at 12:40 | comment | added | Ell | @MartinBüttner Dammit, I hoped no one would notice ;) That's because | |
| Apr 12, 2016 at 11:27 | comment | added | Martin Ender | I never noticed this in the dozens of times I have looked at this challenge, but the chain and sprocket in the point of the exclamation mark are slightly off and now I can't unsee it. T_T Note to self: don't stare at colourful GIFs for too long. | |
| Apr 12, 2016 at 8:33 | comment | added | Ell | @Sp3000 All the other entries were so much awesomer! My implementation is neither particularly golfed, nor coherent, but I'll try to post something :) | |
| Apr 11, 2016 at 7:43 | comment | added | Sp3000 | @Ell Congratulations on winning the "Labour of Love" category for "Best of PPCG 2015" with this challenge! Unfortunately, questions can't be awarded bounties (yet), so would it be possible for you to post a golfed version of your implementation to award a bounty to? We'd love to see it, considering the effort you put into this challenge :) | |
| Mar 25, 2016 at 12:11 | vote | accept | Ell | ||
| Mar 20, 2016 at 21:55 | answer | added | Flambino | timeline score: 45 | |
| Dec 14, 2015 at 15:14 | vote | accept | Ell | ||
| Mar 25, 2016 at 12:11 | |||||
| S Dec 14, 2015 at 15:14 | history | bounty ended | Ell | ||
| S Dec 14, 2015 at 15:14 | history | notice removed | Ell | ||
| S Dec 7, 2015 at 17:18 | history | bounty started | Ell | ||
| S Dec 7, 2015 at 17:18 | history | notice added | Ell | Draw attention | |
| Nov 27, 2015 at 15:20 | answer | added | TFeld | timeline score: 41 | |
| Nov 26, 2015 at 0:16 | comment | added | Ell | @Anko The good news is that you don't have to worry about it: this situation is guaranteed not to happen in the input; see the "no sprocket intersects the convex hull..." part, the one with the image with the three shaded regions. More generally, the chain crosses each sprocket only once, according to the sprockets' order, even if it looks like it passes near a sprocket more more than once. | |
| Nov 25, 2015 at 23:22 | comment | added | Anko | How should three equally-sized sprockets in a straight line look? Does the chain cross twice, once or no times? Wait—it loops completely around the middle one, right? This is doing my head in already. | |
| Nov 25, 2015 at 21:50 | comment | added | Chad Baxter | Jesus...this would be a fairly large project I'd be hard pressed to make this one work in my favorite language(powershell) I'd have to use third party image manipulation stuff which is not code-golfy at all. The only viable language to golf this in would be Java with its extensive libraries. | |
| Nov 25, 2015 at 16:53 | history | tweeted | twitter.com/StackCodeGolf/status/669559540489302016 | ||
| Nov 25, 2015 at 16:30 | comment | added | Ell | @JAtkin Same way everyone else should: I wrote a solution :) If you're asking about the specifics, I used Cairo for the individual frames, and then used ImageMagick to create the gifs (BTW, if anyone wants to produce the animation this way, i.e., by first generating the frames and then using an external tool to turn them into animation, I'm totally fine with that, as long as you specify the dependency on the tool in your post. Just to be clear, it's your program that should invoke the tool, not the user.) | |
| Nov 25, 2015 at 16:16 | comment | added | J Atkin | How did you make the gifs? And how long has this been in the works? | |
| Nov 25, 2015 at 16:11 | comment | added | DavidC | I will be impressed if anyone answers this successfully with any amount of code. | |
| Nov 25, 2015 at 15:57 | history | edited | Ell | CC BY-SA 3.0 |
added 21 characters in body
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| Nov 25, 2015 at 15:19 | comment | added | Adnan | These gifs are very satisfying +1 | |
| Nov 25, 2015 at 15:10 | history | asked | Ell | CC BY-SA 3.0 |