Timeline for How are imaginary numbers useful in video game creation?
Current License: CC BY-SA 4.0
22 events
| when toggle format | what | by | license | comment | |
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| Feb 11, 2020 at 19:57 | answer | added | Shuvro Sarkar | timeline score: 1 | |
| Feb 5, 2020 at 0:23 | comment | added | DMGregory♦ | @Nobody You would be hard pressed to get any benefit of using complex numbers or quaternions without using imaginary numbers. If all you have to play with is the real component, you're no better off than using the reals. So I'd argue that every answer here does use imaginary numbers. The question never asked to limit answers to pure imaginary uses with no real component whatsoever. | |
| Feb 3, 2020 at 3:30 | history | edited | Daosof | CC BY-SA 4.0 | added 2 characters in body; edited title |
| S Feb 3, 2020 at 3:05 | history | suggested | Nobody | CC BY-SA 4.0 | the question is about complex numbers, not the subset of complex numbers that is imaginary |
| Feb 2, 2020 at 10:35 | comment | added | Nobody | Suggested edit replacing imaginary with complex - imaginary numbers are of form $ai,a\in\mathbb{R}$. That's not what the question is about. | |
| Feb 2, 2020 at 10:34 | review | Suggested edits | |||
| S Feb 3, 2020 at 3:05 | |||||
| Feb 1, 2020 at 18:05 | comment | added | Pryftan | Fractals have been used to generate worlds. Mind you I don't remember which fractals and some don't necessitate imaginary numbers but that's one possible thing too. | |
| Jan 31, 2020 at 21:51 | comment | added | Mast | Imaginary numbers are used in a heck of a lot more than video games. Phase angles comes to mind, but first time I had a practical use for them was with demodulating radar signals. | |
| Jan 31, 2020 at 20:59 | comment | added | DMGregory♦ | I'd love to see an answer that goes deeper into FFT and DSP applications. I don't have much hands-on experience with these, so I gave them rather short shrift in my post. It's a rich area worth showing off for a curious audience here! | |
| Jan 31, 2020 at 20:35 | comment | added | Felipe Gutierrez | One for Fourier transforms, see Fast Fourier Trasform, I've seen FFT's used for Computational Fluid Dynamics also | |
| Jan 31, 2020 at 19:04 | answer | added | J.G. | timeline score: 5 | |
| Jan 31, 2020 at 16:49 | vote | accept | Daosof | ||
| Jan 31, 2020 at 15:00 | history | tweeted | twitter.com/StackGameDev/status/1223259807077093379 | ||
| Jan 31, 2020 at 14:37 | comment | added | IMil | I believe your teacher's answer was not very precise. You might need complex numbers in gamedev, but it's pretty hard to come up with an example. However, there's one field where they are indispensable: DSP (Digital Signal Processing). Everything that has to do with sound processing, probably with video. Your media player, MP3 decoder, cell phone, HDMI video transfer: dig deep enough and you'll hit a Fourier transform somewhere, and a bunch of other complex number manipulations. | |
| Jan 31, 2020 at 12:40 | history | became hot network question | |||
| Jan 31, 2020 at 9:14 | answer | added | Philipp | timeline score: 19 | |
| Jan 31, 2020 at 5:34 | answer | added | DMGregory♦ | timeline score: 113 | |
| S Jan 31, 2020 at 4:31 | history | suggested | Robotnik | Retagged more appropriately | |
| Jan 31, 2020 at 4:30 | review | Suggested edits | |||
| S Jan 31, 2020 at 4:31 | |||||
| Jan 31, 2020 at 4:29 | history | migrated | from gaming.stackexchange.com (revisions) | ||
| Jan 31, 2020 at 4:21 | comment | added | Fabian Röling | Your teacher seems to have been extremely vague, I have no idea what they meant. The only thing I could imagine that could have been meant is some specific geometric calculations, but you could just as well use two regular numbers for that. The real point of imaginary numbers is that it's a tool that is often convenient for intermediary steps of calculations. Here is a good video by Numberphile and 3blue1brown about a very similar question: What higher dimensions are used for in Maths. youtube.com/watch?v=6_yU9eJ0NxA&t=2s | |
| Jan 31, 2020 at 4:01 | history | asked | Daosof | CC BY-SA 4.0 |