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Research and Development of "Delir" at Nov, 2016
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Hanakla
November 27, 2016
Programming
0
150
Research and Development of "Delir" at Nov, 2016
開発中のVFXアプリ "Delir"について、社内勉強会で話したものに補足したりしたもの
Hanakla
November 27, 2016
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Transcript
3FTFBSDI"OE%FWFMPQNFOU PGl%FMJSz !@SBHH@
l%FWFMPQNFOUz
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Ϟνϕʔγϣϯ w "GUFS&⒎FDUT ˠΊͬͪΌΑ͍ ɹɾλΠϙάϥϑΟΊͬͪΌѻ͍͍͢ ɹɾඪ४ϓϥάΠϯॆ࣮ͯ͠Δ ɹɾ%ͱ͔Χϝϥͱ͔ͨΓલʹ͑Δ ˠ͔͠͠ʜ ɹɾϨϯμϦϯά͕ͳΜ͔ͩͱͬͯॏ͍ ɹɾΤΫεϓϨογϣϯͱKTY͘Β͍͔͠εΫϦϓςΟϯά͕ग़དྷͳ͍
ɹɾϐΫηϧΛ৮Ζ͏ͱ͢Δͱ͍͖ͳΓಥ͖͚ͭΒΕΔ ɹɹෳࡶͳߏͱӳޠϦϑΝϨϯεͱ$
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NBDʜ ɾ։ൃ͕ఀ͍ͯ͠Δʢ࠷ऴߋ৽͕ɻظ։ൃ͓ർΕ༷Ͱ͢ʜʣ
rϫΠ8FCΤϯδχΞ ࠓͳΒ8FCٕज़Ͱ"&ແཧͰ "WJ6UM͘Β͍·ͰΠέΔΜ͡Όͳ͔Ζ͏͔ʜ 8FC(-ͱ͔8FC8PSLFSͱ͔͋Δ͠ʜ
ͱ͍͏ઙΊͷϞνϕʔγϣϯͱح৺Ͱ %FMJSͷ։ൃ͡Ί·ͨ͠ ٩ Т و-FU`TEJWFUP)&--PG8FC5FDIOPMPHZ
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ϢʔβʔϝΠυͷϓϥάΠϯΛ͑ΔΑ͏ʹ͍ͨ͠ʢͱ͔Ͱ͖ΔΑ͏ʹʣ ̍࡞ઐ༻ʹؾܰʹॻ͖ࣺͯͰ͖ΔεΫϦϓςΟϯάΛͰ͖ΔΑ͏ʹ͍ͨ͠ 8FC(-ɾ8FC"VEJPɾ$BOWBT͋ͨΓΛ͑ΔΑ͏ʹ͍ͨ͠ w ϑϩϯτΤϯυʢ6*ʣ ͳΜ͔Α͠ͳʹোΓͳ͍͘Β͍ʹ͍ͨ͠
ͰɺਐḿͲ͏Ͱ͔͢ʁ w શମ ɾ·ͩ։ൃػͷNBD04Ͱ͔͠ಈ͔ͯ͠ͳ͍ w ϨϯμϦϯάج൫ʢө૾ͷॻ͖ग़͠ʣ ɾͱΓ͋͑ͣNQॻ͖ग़͠Ͱ͖Δ͕ɺ։ൃڥͷNBD04Ͱ͔͠ಈ࡞֬ೝ͕औΕͯͳ͍ ɾͨΊ͠ʹ6U7JEFPͰग़ྗͨ͠Βಁաͷॻ͖ग़͠ग़དྷ֮ͨ͑ʢ͏Ζ֮͑ʣ w ϓϥάΠϯج൫
ɾϓϥάΠϯ͕zԿ͔zΛϨϯμϦϯά͢Δ·ͰͷΈͰ͖ͯΔ ɹɾ"&ͷΑ͏ͳϓϨϏϡʔը໘্ͰஔΛม͑ͨΓ͢ΔΈશ͘ग़དྷͯͳ͍ʢߟ͑ͯΔʣ ɾॻ͖ࣺͯεΫϦϓςΟϯάͷΈ΅ΜΓߟ͑ͯΔ࠷த ɾඪ४ػೳΛϓϥάΠϯͱ࣮ͯ͠͠ͳ͕Βςετͯ͠Δ ɹɾ)5.-7JEFPʹΑΔಈըϑΝΠϧͷಡΈࠐΈͰ͖Δ ɹɾBVSPSBKTʹΑΔԻͷσίʔυͱಉ࣌̍ԻݯͷԻॻ͖ग़͠Ͱ͖ͯΔʢΫιβίʣ w ϑϩϯτΤϯυ ɾΨόΨόϦςΟ͕ߴ͍
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import fs from "fs" import {spawn} from "child_process" import canvasToBuffer
from 'electron-canvas-to-buffer' window.addEventListener('DOMContentLoaded', () => { const FRAMERATE = 30 const VIDEO_DURATION_SEC = 30 const OUTPUT_FRAMES = VIDEO_DURATION_SEC * 30 const cRand = () => ((Math.random() * 256) | 0).toString(16) const canvas = document.querySelector(‘#canvas’) Object.assign(canvas, {width: 640, height: 360}) const ctx = canvas.getContext('2d') const encoder = spawn('ffmpeg', `-i pipe:0 -framerate ${FRAMERATE} -c:v png_pipe -c:v libx264 -r ${OUTPUT_FRAMES} -s 640x360 test.mp4`.split(' ')) for (let i = 0; i < OUTPUT_FRAMES i++) { ctx.fillStyle = '#' + [cRand(), cRand(), cRand()].join('') ctx.fillRect(0, 0, 640, 360) let buffer = canvasToBuffer(canvas, 'image/png') encoder.stdin.write(buffer) } encoder.stdin.end() })
NQ͔Β$BOWBT w )5.-7JEFPͳΒNQಡΊΔ͠ $BOWBTͷసࣸඪ४Ͱαϙʔτ͞ΕͯΔ✨
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㱯✱A㱯 Ͳ͏͢Ε͍͍Μͩʜ
rԶࢯ l/PEFKT͕͑Δͬͯ͜ͱʜʜ $ ͕͑Δͬͯ͜ͱͩΑʢʁʁʁʣz
/PEF/BUJWF"EEPOT
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͋ͬͨ 0QUJNBM#JUTOBWDPEFD
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্Ͱ̍ϑϨʔϜΛ3(#"ྻʹσίʔυ͢Δ w ϑϨʔϜ͕औΕͨΒ"SSBZ#V⒎FSʹͯ͠+4ͷੈքʹؼ͢ w "SSBZ#V⒎FSΛ*NBHF%BUBʹίϐʔͯ͠$BOWBTʹు͔ͤΔ
w SFRVFTU"OJNBUJPO'SBNFͷݶքʢGQTʣग़Δ IUUQTHJUIVCDPN3BHHOBWDPEFDDPNNJUB w )5.-7JEFPͩͱಉ͡ಈըιʔεͰGQT͘Β͍
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Ͱ͖Δͱ͔ͬͨ͠ͱΓ͋͑ͣΑ͠ Α͠ͳʹ࣮Ͱ͖ͨΒϓϥάΠϯԽ࣮ͯ͢͠Δ
ʻௐࠪதʼ ΦʔσΟΦɹ8FC"VEJPͰ͍ͨ͠ΑͶʁʁʁ
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ʁʮ·͋ͪͨ·͑ʯ
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ʻௐࠪதʼ +4ͰɹϚϧνεϨουɹͯ͠༏উ
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w సૹ͞ΕͨΦϒδΣΫτϝΠϯεϨου͔Βར༻Ͱ͖ͳ͘ͳΔ ʢத͕ۭͬΆʹͳͬͨΓɺOVMMʹͳͬͨΓ͢Δʣ
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"VEJP8PSLMFU ະ࣮ w 4DSJQU1SPDFTTPS/PEFΛผεϨουͰॲཧͰ͖ΔΑ͏ʹͳΔʢͣʣ w 4DSJQU1SPDFTTPS/PEF8FC"VEJPͷ৴߸ॲཧΛࣗͰ࣮͢Δ࣌ʹ͏ ΦϒδΣΫτ w "VEJP8PSLFSͱ͔ࣅͨΑ͏ͳ༷ʢ࣮ʣ͚͋ͬͨͲ আ͞Εͨ
ͷ͠Ͳ͜Ζ w 5SBOTGFSBCMFΛআ͘ͱ+40/ʹγϦΞϥΠζՄ ೳͳσʔλ͔͠ૹ৴Ͱ͖ͳ͍ ˠྻΦϒδΣΫτΛ্खͬͯ͘ΓऔΓ w ඇಉظʹϝοηʔδΛ͛߹͏͜ͱͰ͔͠ 8PSLFSͱΓऔΓͰ͖ͳ͍ ˠॲཧॱংͷ߹ੑࣗͰऔΒͳ͍ͱ͍͚ͳ͍
ͬͪ͜·ͩݕূͰ͖ͯͳ͍Ͱ͢ ݕূͰ͖ͨΒ͓͠·͢
ͦΜͳ͜ΜͳͰ ௐࠪ͠ͳ͕Β։ൃͯ͠·͢ɻ
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